2001 JUNEAU, ALASKA (JNU)



Juneau lies well within the area of maritime influences which prevail over the coastal areas of southeastern Alaska, and is in the path of most storms that cross the Gulf of Alaska. Consequently, the area has little sunshine, generally moderate temperatures, and abundant precipitation. In contrast with the characteristic lack of sunshine there are greatly appreciated intervals, sometimes lasting for several days at a stretch, during which clear skies prevail. The rugged terrain exerts a fundamental influence upon local temperatures and the distribution of precipitation, creating considerable variations in both weather elements within relatively short distances.

Temperature variations, both daily and seasonal, are usually confined to relatively narrow limits by the dominant maritime influences. There are, however, periods of comparatively severe cold, which usually start with strong northerly winds, and are most often caused by the flow of cold air from northwestern Canada through nearby mountain passes and over the Juneau ice field. These are generally of brief duration. During such periods strong, gusty winds, known locally as Taku Winds, often occur especially in downtown Juneau, Douglas, and other local areas, but generally they are not felt in the Mendenhall Valley. At times these are strong enough to cause considerable damage. During periods of calm or light winds, temperature differences within short distances are frequently very pronounced. Variations in local sunlight and air drainage patterns produce wide differences in temperatures particularly between upland or sloping areas and areas of low, flat terrain. Juneau International Airport, located on low, flat terrain formed by the Mendenhall River delta, and in the path of drainage air from the Mendenhall Glacier, averages about 10 days a year with minimum readings below zero. Downtown Juneau, located on a sloping portion of a rugged mountain area, experiences on the average only about one day each year with minimum readings below zero. At the airport the growing season averages 146 days, from May 4 to September 28, while the downtown average is 181 days, from April 22 to October 21.

The months of February to June mark the period of lightest precipitation, with monthly averages of about 3 inches. After June the monthly amounts increase gradually, reaching an average of 7.71 inches in October. Due to the rugged topography, precipitation throughout the year tends to vary greatly within short distances. At the Juneau Airport, yearly precipitation is 53 inches while downtown, only 8 miles away, it is 93 inches. The maximum yearly amount received in the city is almost double the maximum received at the airport.

Although a trace of snow has fallen as early as September 9, first falls usually occur in the latter part of October, and sometimes not until the first part of December. On the average there is very little accumulation on the ground at low levels until the last of November, although at higher elevations, and particularly on mountain tops, a cover is usually established in early October. Snow accumulation usually reaches its greatest depth during the middle of February. Individual storms may produce heavy falls as late as the first half of May. However, snow cover is usually gone before the middle of April. Ice accumulations due to alternating thawing and freezing of snow or due to freezing precipitation are frequent problems in the Juneau area during the winter months.

NORMALS, MEANS, AND EXTREMES

JUNEAU, AK (JNU)

LATITUDE:     LONGITUDE:     ELEVATION (FT):     TIME ZONE:     WBAN: 25309

58 21′ 18″ N   134 34′ 30″ W   GRND: 37   BARO: 40   ALASKA (UTC + 9)  

2001 Juneau, Alaska (JNU)

ELEMENT POR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC YEAR
TEMPERATURE F NORMAL DAILY MAXIMUM 30 29.4 34.1 38.7 47.2 55.1 60.9 63.9 62.7 55.9 47.1 36.7 31.6 46.9
MEAN DAILY MAXIMUM 52 29.1 34.1 38.7 47.3 55.2 61.7 63.8 62.8 56.1 47.0 37.7 32.5 47.2
HIGHEST DAILY MAXIMUM 57 57 57 61 72 82 86 90 83 73 61 56 54 90
YEAR OF OCCURRENCE 1958 1992 1998 1995 1947 1969 1975 1999 1996 1987 1949 1999 JUL 1975
MEAN OF EXTREME MAXS. 52 42.7 43.9 48.2 59.4 69.7 75.9 78.4 75.6 65.6 55.6 48.1 43.9 58.9
NORMAL DAILY MINIMUM 30 19.0 22.7 26.7 32.1 38.9 45.0 48.1 47.3 42.9 37.2 27.2 22.6 34.1
MEAN DAILY MINIMUM 52 18.6 22.7 26.4 32.4 39.3 45.3 48.3 47.4 43.1 37.0 28.6 23.4 34.4
LOWEST DAILY MINIMUM 57 -22 -22 -15 6 25 31 36 27 23 11 –5 -21 -22
YEAR OF OCCURRENCE 1972 1968 1972 1963 1972 1971 1950 1948 1972 1984 1966 1949 JAN 1972
MEAN OF EXTREME MINS. 52 –.7 4.9 10.3 23.4 30.0 37.2 41.5 39.2 31.8 24.6 12.2 3.1 21.5
NORMAL DRY BULB 30 24.2 28.4 32.7 39.7 47.0 53.0 56.0 55.0 49.4 42.2 32.0 27.1 40.6
MEAN DRY BULB 52 24.0 28.4 32.7 39.9 47.2 53.5 56.1 55.1 49.6 42.0 33.2 28.0 40.8
MEAN WET BULB 14 27.1 28.2 32.5 38.6 44.7 50.4 50.2 49.7 45.4 38.7 30.9 28.1 38.7
MEAN DEW POINT 14 24.6 24.3 28.6 34.5 40.5 46.7 47.6 47.3 43.9 36.9 28.6 26.0 35.8
NORMAL NO. DAYS WITH:
MAXIMUM 70 30 0.0 0.0 0.0 0.1 1.4 5.1 7.2 5.7 0.2 0.0 0.0 0.0 19.7
MAXIMUM 32 30 16.3 8.7 4.3 0.1 0.0 0.0 0.0 0.0 0.0 0.3 6.8 12.9 49.4
MINIMUM 32 30 25.4 21.8 22.0 14.4 3.5 0.1 0.0 * 1.4 7.2 19.1 23.9 138.8
MINIMUM 0 30 4.7 1.6 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 1.8 8.7
H/C NORMAL HEATING DEG. DAYS 30 1265 1025 1001 759 558 360 279 310 468 707 990 1175 8897
NORMAL COOLING DEG. DAYS 30 0 0 0 0 0 0 0 0 0 0 0 0 0
RH NORMAL (PERCENT) 30 80 81 79 77 76 78 81 84 88 88 85 83 82
HOUR 03 LST 30 81 83 86 87 89 90 90 92 93 91 87 84 88
HOUR 09 LST 30 80 82 80 76 76 78 82 85 88 89 86 83 82
HOUR 15 LST 30 77 75 70 63 63 67 72 75 79 82 81 82 74
HOUR 21 LST 30 81 82 82 80 78 78 81 85 91 90 87 83 83
S PERCENT POSSIBLE SUNSHINE 33 32 32 37 39 39 34 31 32 26 19 23 20 30
W/O MEAN NO. DAYS WITH:
HEAVY FOG (VISBY 1/4 MI) 57 2.1 2.4 1.8 1.0 0.8 0.3 0.2 1.1 2.6 2.8 3.2 2.4 20.7
THUNDERSTORMS 57 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.0 0.1 0.0 0.0 0.0 0.3
CLOUDINESS MEAN:
SUNRISE–SUNSET (OKTAS) 47 6.2 6.4 6.4 6.4 6.3 6.5 6.6 6.3 6.8 7.0 6.7 6.7 6.5
MIDNIGHT–MIDNIGHT (OKTAS) 15 5.2 5.7 6.1 5.9 6.3 6.1 6.2 5.9 6.4 6.6 6.0 6.1 6.0
MEAN NO. DAYS WITH:
CLEAR 47 5.7 4.3 4.4 3.7 3.8 3.4 2.8 3.9 2.7 2.4 3.3 3.2 43.6
PARTLY CLOUDY 47 2.6 3.0 3.2 4.2 4.4 4.2 4.5 4.7 3.3 2.1 2.3 2.0 40.5
CLOUDY 47 22.5 21.0 23.4 22.1 22.6 22.4 23.0 21.9 23.4 26.0 24.0 25.2 277.5
PR MEAN STATION PRESSURE(IN) 16 29.87 29.88 29.79 29.90 29.90 29.99 30.01 29.98 29.89 29.79 29.78 29.80 29.88
MEAN SEA–LEVEL PRES. (IN) 4 29.87 29.91 29.82 29.91 29.93 30.00 30.04 29.98 29.91 29.79 29.78 29.83 29.90
WINDS MEAN SPEED (MPH) 35 7.8 8.1 8.1 8.5 8.2 7.9 7.5 7.4 7.9 9.3 8.7 8.9 8.2
PREVAIL. DIR (TENS OF DEGS) 20 09 11 11 11 11 08 08 09 11 11 11 11 11
MAXIMUM 2–MINUTE:
SPEED (MPH) 3 45 44 39 37 36 24 26 38 41 41 47 44 47
DIR. (TENS OF DEGS) 12 12 11 11 12 12 12 12 12 12 12 11 12
YEAR OF OCCURRENCE 2001 2001 2000 1999 2001 1999 2001 1999 2001 1999 2001 1999 NOV 2001
MAXIMUM 5–SECOND:
SPEED (MPH) 3 56 51 49 48 47 32 32 48 53 51 61 54 61
DIR. (TENS OF DEGS) 12 12 12 12 15 10 12 13 20 12 12 12 12
YEAR OF OCCURRENCE 2001 2001 2000 1999 1999 2001 2001 1999 2000 1999 2001 1999 NOV 2001
PRECIPITATION NORMAL (IN) 30 4.54 3.75 3.28 2.77 3.42 3.15 4.16 5.32 6.73 7.84 4.91 4.44 54.31
MAXIMUM MONTHLY (IN) 57 9.11 8.48 6.50 7.48 9.20 6.22 10.36 12.31 15.14 15.25 11.22 13.61 15.25
YEAR OF OCCURRENCE 1993 1964 1994 1999 1992 1996 1997 1961 1991 1974 1956 1997 OCT 1974
MINIMUM MONTHLY (IN) 57 0.94 0.07 0.59 0.27 1.25 1.08 1.15 0.56 2.34 2.71 1.15 0.49 0.07
YEAR OF OCCURRENCE 1969 1989 1983 1948 1946 1950 1972 1979 1965 1950 1983 1983 FEB 1989
MAXIMUM IN 24 HOURS (IN) 57 2.74 2.71 1.81 2.05 2.30 2.26 2.46 2.62 3.35 4.66 3.40 3.56 4.66
YEAR OF OCCURRENCE 1948 1993 1992 1997 1992 1996 2001 1974 1996 1946 1988 1956 OCT 1946
NORMAL NO. DAYS WITH:
PRECIPITATION 0.01 30 18.1 16.5 17.9 16.7 16.8 15.9 16.1 17.3 20.0 23.7 19.2 20.2 218.4
PRECIPITATION 1.00 30 0.6 0.4 0.1 0.1 0.2 0.2 0.6 0.8 1.3 1.2 0.8 0.4 6.7
SNOWFALL NORMAL (IN) 30 30.6 18.6 15.4 3.5 0.* 0.0 0.0 0.0 T 0.9 13.3 22.2 104.5
MAXIMUM MONTHLY (IN) 57 69.2 86.3 52.6 46.3 1.2 T 0.0 0.0 T 15.6 69.8 54.7 86.3
YEAR OF OCCURRENCE 1982 1965 1948 1963 1964 1970 1974 1956 1994 1964 FEB 1965
MAXIMUM IN 24 HOURS (IN) 57 20.1 23.7 31.0 24.2 0.7 T 0.0 0.0 T 8.8 19.4 25.6 31.0
YEAR OF OCCURRENCE 1975 1949 1948 1963 1945 1970 1974 1956 1994 1962 MAR 1948
MAXIMUM SNOW DEPTH (IN) 51 38 41 40 33 0 0 0 0 0 7 25 36 41
YEAR OF OCCURRENCE 1966 1949 1972 1963 1956 1994 1962 FEB 1949
NORMAL NO. DAYS WITH:
SNOWFALL 1.0 30 7.8 5.4 4.1 0.8 0.0 0.0 0.0 0.0 0.0 0.3 3.6 6.1 28.1

2001 Juneau, Alaska (JNU)

PRECIPITATION (inches) 2001 JUNEAU, AK (JNU)
YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
1972 3.73 2.71 4.19 3.62 4.03 3.98 1.15 8.62 6.24 8.49 3.35 3.56 53.67
1973 4.37 3.94 3.01 2.41 4.09 2.80 3.65 6.64 4.95 6.07 1.63 2.30 45.86
1974 2.37 6.23 1.15 2.59 1.66 4.92 3.12 5.78 5.96 15.25 7.79 7.03 63.85
1975 4.10 3.76 2.17 3.04 3.59 2.48 4.96 2.78 7.25 3.55 2.83 5.81 46.32
1976 8.19 4.82 3.61 2.14 3.42 3.37 2.48 3.16 8.32 6.19 5.15 5.56 56.41
1977 4.59 4.56 3.31 4.02 1.56 3.47 3.19 3.03 5.57 7.14 4.58 2.16 47.18
1978 1.71 1.50 1.84 2.19 2.86 3.18 3.98 4.39 3.07 13.00 3.90 4.46 46.08
1979 2.19 0.91 3.98 0.98 2.45 2.74 5.44 0.56 4.89 9.06 8.36 7.73 49.29
1980 3.44 2.83 2.75 5.32 2.53 4.37 6.49 5.61 7.91 11.26 7.10 2.27 61.88
1981 4.66 2.57 1.88 2.11 3.27 2.44 4.25 6.19 11.61 6.18 6.93 2.24 54.33
1982 3.74 1.42 2.52 2.44 5.10 1.86 1.73 5.97 5.10 7.97 2.10 1.17 41.12
1983 4.00 1.69 0.59 2.53 5.37 2.69 3.16 9.52 6.13 4.24 1.15 0.49 41.56
1984 6.06 5.40 3.75 2.11 1.84 4.17 6.92 6.26 3.39 6.69
1985 8.33
1986 7.00 3.25 6.08 2.98 2.54 2.76 2.38 6.89 2.40 12.33 5.96 6.42 60.99
1987 3.99 3.13 2.12 2.08 2.60 6.02 2.54 4.54 8.92 10.36 7.17 5.32 58.79
1988 2.58 6.55 4.15 2.25 3.91 2.05 5.21 5.53 5.46 9.71 8.62 4.75 60.77
1989 6.77 0.07 1.33 0.87 3.44 1.10 3.81 2.82 7.29 6.37 6.23 6.78 46.88
1990 3.72 4.54 4.86 1.06 1.72 3.32 4.65 5.35 10.63 6.59 4.89 6.03 57.36
1991 4.16 6.55 4.41 4.73 4.72 3.41 4.85 9.60 15.14 8.63 9.63 9.32 85.15
1992 8.69 7.24 6.37 3.63 9.20 2.98 5.18 5.02 11.45 5.90 7.91 5.73 79.30
1993 9.11 8.09 3.50 1.94 2.19 4.92 2.25 3.20 8.44 9.00 11.06 7.89 71.59
1994 7.05 2.52 6.50 3.68 4.20 1.83 4.32 2.68 11.17 9.15 9.57 6.22 68.89
1995 1.78 2.83 3.01 2.08 2.85 3.45 4.36 5.01 7.43 6.04 2.93 4.58 46.35
1996 2.26 8.43 4.12 2.19 1.80 6.22 3.16 7.91 10.68 6.20 2.75 4.73 60.45
1997 2.73 8.17 3.91 4.41 3.25 3.51 10.36 3.93 8.26 7.85 4.63 13.61 74.62
1998 2.54 1.90 3.71 3.12 2.21 2.50 4.95 6.80 6.17 12.13 1.72 5.45 53.20
1999 8.14 2.66 2.58 7.48 5.69 2.69 4.10 6.77 10.62 12.19 5.77 10.30 78.99
2000 4.82 1.56 5.75 4.40 3.25 5.72 6.65 6.12 10.05 10.11 6.37 4.17 68.97
2001 7.43 4.40 3.33 2.19 5.19 1.65 7.26 3.66 8.37 7.80 3.62 4.49 59.39
POR=57 YRS 4.29 3.72 3.55 2.92 3.49 3.12 4.42 5.19 7.22 7.97 5.45 4.87 56.21

2001 Juneau, Alaska (JNU)

AVERAGE TEMPERATURE (F) 2001 JUNEAU, AK (JNU)
YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
1972 15.8 19.5 26.5 34.6 44.8 50.4 58.0 55.4 47.0 38.7 34.5 23.6 37.4
1973 18.9 24.6 32.9 39.6 45.9 51.3 53.7 51.8 48.0 41.2 23.0 28.0 38.2
1974 14.8 28.8 24.7 39.3 46.8 50.2 53.5 54.7 50.1 42.5 36.4 33.8 39.6
1975 23.1 24.5 30.6 38.3 47.4 51.4 55.9 53.9 51.4 41.8 28.5 24.7 39.3
1976 28.3 25.8 32.4 41.1 45.5 52.0 55.7 55.9 50.6 42.8 40.9 34.4 42.1
1977 35.0 40.1 36.0 42.3 47.7 54.1 57.0 58.5 50.5 42.4 29.4 18.9 42.7
1978 25.1 31.8 33.9 42.0 47.8 54.2 55.2 56.3 50.6 45.1 30.3 28.3 41.7
1979 20.6 11.0 35.6 41.1 47.7 52.2 56.7 58.2 51.0 45.2 37.2 26.5 40.3
1980 19.5 33.8 34.1 42.2 49.4 55.6 55.6 54.7 49.0 44.6 38.7 21.7 41.6
1981 37.6 32.7 39.4 39.1 52.1 54.3 56.1 55.9 49.2 42.8 36.8 26.9 43.6
1982 13.8 21.3 31.8 37.1 45.4 56.3 57.7 54.8 50.3 42.2 30.6 31.6 39.4
1983 30.2 31.8 34.8 42.6 49.7 55.6 57.1 54.6 48.0 42.1 31.8 18.9 41.4
1984 32.0 39.6 43.1 49.1 53.5 55.5 55.3 50.0 40.5
1985 32.5
1986 34.3 28.7 35.3 37.3 46.6 54.3 56.8 54.4 50.7 45.8 30.5 36.0 42.6
1987 33.1 34.7 31.8 41.6 47.8 51.6 58.6 57.5 50.1 44.4 40.0 34.3 43.8
1988 27.0 32.6 37.6 41.7 48.5 54.0 53.8 53.9 48.2 44.1 36.2 31.3 42.4
1989 25.5 23.9 29.4 42.7 49.0 55.4 60.1 58.2 52.4 41.7 32.9 36.0 42.3
1990 26.4 25.1 36.4 42.7 49.7 55.0 59.3 58.1 51.2 40.7 26.4 23.7 41.2
1991 24.9 35.3 33.1 41.7 48.2 55.0 55.2 55.0 50.3 40.1 36.3 33.6 42.4
1992 35.7 32.7 36.9 41.1 46.4 55.2 57.0 56.0 46.8 40.5 38.4 25.6 42.7
1993 24.5 30.2 35.8 44.4 52.1 55.8 59.6 57.1 51.2 45.8 36.8 35.9 44.1
1994 27.7 18.4 36.7 43.3 48.1 54.9 57.4 59.3 50.2 43.3 29.4 27.7 41.4
1995 27.2 29.0 30.3 43.4 51.4 55.4 57.0 54.8 53.8 32.4 25.2
1996 16.6 29.0 32.8 40.7 48.7 54.1 57.7 54.7 48.9 40.2 31.3 26.5 40.1
1997 26.1 35.3 31.5 41.5 51.5 56.6 58.2 58.8 53.3 41.4 37.3 36.7 44.0
1998 24.5 37.1 35.0 42.4 50.1 55.9 57.5 54.2 49.4 42.8 33.1 27.9 42.5
1999 26.6 28.6 33.1 39.5 44.8 53.8 57.4 56.4 49.7 43.5 36.1 35.9 42.1
2000 26.5 31.7 36.3 39.7 46.9 53.0 55.3 54.4 49.0 41.9 37.7 31.2 42.0
2001 36.7 28.2 33.4 40.3 45.2 54.2 55.4 57.2 50.3 41.9 32.9 29.0 42.1
POR=57 YRS 24.4 28.2 32.7 39.6 47.4 53.5 56.0 54.9 49.5 42.0 33.1 28.1 40.8

REFERENCE NOTES:

PAGE 1:

THE TEMPERATURE GRAPH SHOWS NORMAL MAXIMUM AND NORMAL MINIMUM DAILY TEMPERATURES (SOLID CURVES) AND THE ACTUAL DAILY HIGH AND LOW TEMPERATURES (VERTICAL BARS).

PAGE 2 AND 3:

H/C INDICATES HEATING AND COOLING DEGREE DAYS.

RH INDICATES RELATIVE HUMIDITY

W/O INDICATES WEATHER AND OBSTRUCTIONS

S INDICATES SUNSHINE.

PR INDICATES PRESSURE.

CLOUDINESS ON PAGE 3 IS THE SUM OF THE CEILOMETER AND SATELLITE DATA NOT TO EXCEED EIGHT EIGHTHS (OKTAS).

GENERAL:

T INDICATES TRACE PRECIPITATION, AN AMOUNT GREATER THAN ZERO BUT LESS THAN THE LOWEST REPORTABLE VALUE.

+ INDICATES THE VALUE ALSO OCCURS ON EARLIER DATES.

BLANK ENTRIES DENOTE MISSING OR UNREPORTED DATA.

NORMALS ARE 30–YEAR AVERAGES (1961–1990).

ASOS INDICATES AUTOMATED SURFACE OBSERVING SYSTEM.

PM INDICATES THE LAST DAY OF THE PREVIOUS MONTH.

POR (PERIOD OF RECORD) BEGINS WITH THE JANUARY DATA MONTH AND IS THE NUMBER OF YEARS USED TO COMPUTE THE MEAN. INDIVIDUAL MONTHS WITHIN THE POR MAY BE MISSING.

WHEN THE POR FOR A NORMAL IS LESS THAN 30 YEARS, THE NORMAL IS PROVISIONAL AND IS BASED ON THE NUMBER OF YEARS INDICATED.

0.* OR * INDICATES THE VALUE OR MEAN–DAYS–WITH IS BETWEEN 0.00 AND 0.05.

CLOUDINESS FOR ASOS STATIONS DIFFERS FROM THE NON–ASOS OBSERVATION TAKEN BY A HUMAN OBSERVER. ASOS STATION CLOUDINESS IS BASED ON TIME–AVERAGED CEILOMETER DATA FOR CLOUDS AT OR BELOW 12,000 FEET AND ON SATELLITE DATA FOR CLOUDS ABOVE 12,000 FEET.

THE NUMBER OF DAYS WITH CLEAR, PARTLY CLOUDY, AND CLOUDY CONDITIONS FOR ASOS STATIONS IS THE SUM OF THE CEILOMETER AND SATELLITE DATA FOR THE SUNRISE TO SUNSET PERIOD.

GENERAL CONTINUED:

CLEAR INDICATES 0–2 OKTAS, PARTLY CLOUDY INDICATES 3–6 OKTAS, AND CLOUDY INDICATES 7 OR 8 OKTAS. WHEN AT LEAST ONE OF THE ELEMENTS (CEILOMETER OR SATELLITE) IS MISSING, THE DAILY CLOUDINESS IS NOT COMPUTED.

WIND DIRECTION IS RECORDED IN TENS OF DEGREES (2 DIGITS) CLOCKWISE FROM TRUE NORTH. "00" INDICATES CALM. "36" INDICATES TRUE NORTH.

RESULTANT WIND IS THE VECTOR AVERAGE OF THE SPEED AND DIRECTION.

AVERAGE TEMPERATURE IS THE SUM OF THE MEAN DAILY MAXIMUM AND MINIMUM TEMPERATURE DIVIDED BY 2.

SNOWFALL DATA COMPRISE ALL FORMS OF FROZEN PRECIPITATION, INCLUDING HAIL.

A HEATING (COOLING) DEGREE DAY IS THE DIFFERENCE BETWEEN THE AVERAGE DAILY TEMPERATURE AND 65 F.

DRY BULB IS THE TEMPERATURE OF THE AMBIENT AIR.

DEW POINT IS THE TEMPERATURE TO WHICH THE AIR MUST BE COOLED TO ACHIEVE 100 PERCENT RELATIVE HUMIDITY.

WET BULB IS THE TEMPERATURE THE AIR WOULD HAVE IF THE MOISTURE CONTENT WAS INCREASED TO 100 PERCENT RELATIVE HUMIDITY.

ON JULY 1, 1996, THE NATIONAL WEATHER SERVICE BEGAN USING THE "METAR" OBSERVATION CODE THAT WAS ALREADY EMPLOYED BY MOST OTHER NATIONS OF THE WORLD. THE MOST NOTICEABLE DIFFERENCE IN THIS ANNUAL PUBLICATION WILL BE THE CHANGE IN UNITS FROM TENTHS TO EIGHTS (OKTAS) FOR REPORTING THE AMOUNT OF SKY COVER.

2001 Juneau, Alaska (JNU)

HEATING DEGREE DAYS (base 65 F) 2001 JUNEAU, AK (JNU)
YEAR JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN TOTAL
1972–73 207 293 535 810 907 1275 1423 1126 986 752 584 404 9302
1973–74 343 404 505 732 1253 1143 1550 1006 1242 765 556 437 9936
1974–75 349 315 437 690 851 957 1296 1129 1063 791 541 402 8821
1975–76 281 337 402 712 1088 1244 1132 1131 1006 706 597 384 9020
1976–77 280 275 427 679 717 938 918 690 893 673 531 320 7341
1977–78 243 196 428 695 1062 1423 1233 922 954 683 525 317 8681
1978–79 298 262 427 612 1037 1134 1370 1505 904 712 528 378 9167
1979–80 251 205 415 609 830 1187 1404 895 949 678 477 278 8178
1980–81 283 308 472 628 783 1333 843 899 786 772 392 316 7815
1981–82 269 275 469 682 841 1175 1579 1214 1021 830 601 257 9213
1982–83 220 310 435 699 1027 1029 1073 924 931 663 470 275 8056
1983–84 237 317 502 701 991 1423 1014 780 649 486 338
1984–85 286 291 444 754
1985–86 1001 943 1011 913 822 564 316
1986–87 249 319 423 587 1028 891 982 841 1020 697 526 394 7957
1987–88 199 222 440 635 744 944 1169 935 844 691 508 324 7655
1988-89 338 338 497 641 855 1040 1217 1144 1097 663 491 283 8604
1989-90 159 210 370 713 959 890 1191 1109 879 661 467 295 7903
1990-91 180 210 407 748 1152 1274 1238 823 981 694 516 298 8521
1991–92 294 303 435 764 855 966 902 930 865 712 571 292 7889
1992-93 240 274 540 750 791 1217 1250 966 899 612 394 271 8204
1993–94 166 240 406 588 838 891 1147 1298 869 641 514 299 7897
1994–95 229 171 437 668 1061 1150 1165 1003 1066 641 416 285 8292
1995–96 241 309 329 971 1229 1493 1038 993 719 498 322
1996–97 218 312 476 764 1004 1187 1196 826 1031 698 414 252 8378
1997–98 203 183 345 725 823 869 1247 776 926 673 457 266 7493
1998–99 224 331 463 681 951 1141 1181 1012 978 758 619 329 8668
1999–00 230 264 452 660 858 895 1184 959 882 751 552 354 8041
2000–01 295 322 471 710 813 1040 873 1026 972 734 605 320 8181
2001– 292 235 434 709 956 1111

2001 Juneau, Alaska (JNU)

COOLING DEGREE DAYS (base 65 F) 2001 JUNEAU, AK (JNU)
YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
1972 0 0 0 0 0 0 0 0 0 0 0 0 0
1973 0 0 0 0 0 0 0 0 0 0 0 0 0
1974 0 0 0 0 0 0 0 0 0 0 0 0 0
1975 0 0 0 0 0 0 7 0 0 0 0 0 7
1976 0 0 0 0 0 0 3 3 0 0 0 0 6
1977 0 0 0 0 0 0 0 1 0 0 0 0 1
1978 0 0 0 0 0 0 0 0 0 0 0 0 0
1979 0 0 0 0 0 0 0 1 0 0 0 0 1
1980 0 0 0 0 0 1 0 0 0 0 0 0 1
1981 0 0 0 0 0 0 0 0 0 0 0 0 0
1982 0 0 0 0 0 2 0 0 0 0 0 0 2
1983 0 0 0 0 0 0 0 0 0 0 0 0 0
1984 0 0 0 0 0 0 0 0 0
1985 0
1986 0 0 0 0 0 2 0 0 0 0 0 0 2
1987 0 0 0 0 0 0 5 0 0 0 0 0 5
1988 0 0 0 0 0 0 0 0 0 0 0 0 0
1989 0 0 0 0 0 0 14 0 0 0 0 0 14
1990 0 0 0 0 0 1 8 3 0 0 0 0 12
1991 0 0 0 0 0 6 0 0 0 0 0 0 6
1992 0 0 0 0 0 6 0 0 0 0 0 0 6
1993 0 0 0 0 0 0 5 0 0 0 0 0 5
1994 0 0 0 0 0 0 0 2 0 0 0 0 2
1995 0 0 0 0 0 1 0 0 0 0 0
1996 0 0 0 0 0 0 2 0 0 0 0 0 2
1997 0 0 0 0 0 6 0 0 0 0 0 0 6
1998 0 0 0 0 0 0 0 0 0 0 0 0 0
1999 0 0 0 0 0 0 2 3 0 0 0 0 5
2000 0 0 0 0 0 0 0 0 0 0 0 0 0
2001 0 0 0 0 0 0 0 0 0 0 0 0 0

2001 Juneau, Alaska (JNU)

SNOWFALL (inches) 2001 JUNEAU, AK (JNU)
YEAR JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN TOTAL
1972–73 0.0 0.0 0.0 2.2 2.8 31.6 63.8 20.9 9.6 0.5 0.0 0.0 131.4
1973–74 0.0 0.0 0.0 T 18.6 15.7 36.0 32.8 15.3 0.5 0.0 0.0 118.9
1974–75 0.0 0.0 T 0.9 3.5 17.3 41.5 16.5 18.9 4.5 0.0 0.0 103.1
1975–76 0.0 0.0 0.0 5.3 32.5 51.0 32.9 34.1 25.5 2.3 0.0 0.0 183.6
1976–77 0.0 0.0 0.0 1.2 1.1 26.3 5.0 T 12.7 T 0.0 0.0 46.3
1977–78 0.0 0.0 0.0 T 27.4 16.6 5.2 1.1 1.7 0.4 0.0 0.0 52.4
1978–79 0.0 0.0 0.0 0.0 14.9 21.6 24.2 21.4 5.4 T 0.0 0.0 87.5
1979–80 0.0 0.0 0.0 0.0 1.6 48.4 41.6 4.1 2.4 T 0.0 0.0 98.1
1980–81 0.0 0.0 0.0 0.0 0.5 40.5 2.4 16.4 0.5 2.2 0.0 0.0 62.5
1981–82 0.0 0.0 0.0 0.0 4.0 6.0 69.2 29.6 8.4 1.1 T 0.0 118.3
1982–83 0.0 0.0 0.0 2.0 0.4 10.8 40.1 15.7 0.2 T 0.0 0.0 69.2
1983–84 0.0 0.0 0.0 0.0 8.1 13.3 43.1 0.7 1.0 T T 0.0 66.2
1984–85 0.0 0.0 0.0 0.0
1985–86 2.0 10.3 7.4 30.4 4.4 T 0.0
1986–87 0.0 0.0 0.0 T 22.1 1.4 3.3 1.4 7.3 T 0.0 0.0 35.5
1987–88 0.0 0.0 0.0 T 4.6 6.8 3.5 8.0 1.0 0.5 0.0 0.0 24.4
1988-89 0.0 0.0 0.0 0.0 4.8 11.3 44.7 0.2 10.0 T 0.0 0.0 71.0
1989-90 0.0 0.0 0.0 0.6 32.5 6.4 36.5 39.4 0.6 0.0 0.0 0.0 116.0
1990-91 0.0 0.0 0.0 0.0 48.8 33.2 31.8 15.5 9.4 0.8 T 0.0 139.5
1991–92 0.0 0.0 0.0 5.4 7.7 49.3 14.3 12.4 4.1 T T 0.0 93.2
1992-93 0.0 0.0 0.0 1.1 4.4 25.0 32.5 36.8 2.6 T 0.0 0.0 102.4
1993–94 0.0 0.0 0.0 0.0 4.3 10.4 61.2 32.4 22.9 T 0.0 0.0 131.2
1994–95 0.0 0.0 0.0 0.0 69.8 25.8 8.6 14.0 28.4 T 0.0 0.0 146.6
1995–96 0.0 0.0 0.0 0.0 2.9 23.0 20.8 33.1 5.5 T 0.0 0.0 85.3
1996–97 0.0 0.0 0.0 0.5 2.5 4.6 12.3 17.3 19.2 0.4 0.0 0.0 56.8
1997–98 0.0 0.0 0.0 1.9 1.2 14.9 12.9 0.5
1998–99 22.8 53.1 34.2 7.3 1.1 T 0.0
1999–00 0.0 0.0 0.0 T 5.1 19.9 13.6 4.6 T T 0.0 0.0 43.2
2000–01 0.0 0.0 T 2.3 1.0 2.3 7.6 14.9 0.6 T T 0.0 28.7
2001– 0.0 0.0 0.0 3.4 3.1 25.5
POR=55 YRS 0.0 0.0 T 1.0 12.2 22.3 25.2 18.6 14.2 2.9 0.0 T 96.4



User Contributions:

lou bacher
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May 20, 2009 @ 5:17 pm
is there a way on this site that i cn research actual times of surise and sunset in juneau and perhaps fairbanks prior to the beginning of spring and the end of fall also maybe barrow
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Nov 7, 2011 @ 12:00 am
Why does this have to be the ONLY reliable suocre? Oh well, gj!
Report this comment as inappropriate
Nov 7, 2011 @ 12:00 am
Why does this have to be the ONLY reliable suocre? Oh well, gj!

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