2001 PORTLAND, MAINE (PWM)



The Portland City Airport is located 2 3/4 miles west of the site of the former city office. The surrounding country is mostly open, rolling and sloping generally toward the Fore River, a body of brackish water about 1,000 feet wide at a distance of about 1/2 mile from the station and forming one boundary (north through east) of the field. The airport is about 5 1/2 miles west–northwest of the open ocean. A slight rise reaching an elevation of 100 feet, lying northwest of the field, cuts down the wind slightly from that direction. The older portion of the city is situated on a hill rising abruptly from sea level to 170 feet, 1 1/2 miles east of the airport and on the opposite side of the Fore River. A line of low hills southeast of the airport, near the ocean, which reach a maximum height of 160 feet, shuts off sight of the ocean from the airport. Sebago Lake with an area of 44 square miles is situated about 15 miles to the northwest and 45 miles farther are the White Mountains, averaging 3,000 to 5,000 feet in height.

As a rule, Portland has very pleasant summers and falls, cold winters with frequent thaws, and disagreeable springs. Very few summer nights are too warm and humid for comfortable sleeping. Autumn has the greatest number of sunny days and the least cloudiness. Winters are quite severe, but begin late and then extend deeply into the normal springtime.

Heavy seasonal snowfalls, over 100 inches, normally occur about each 10 years. True blizzards are very rare. The White Mountains, to the northwest, keep considerable snow from reaching the Portland area and also moderate the temperature. Normal monthly precipitation is remarkably uniform throughout the year.

Winds are generally quite light with the highest velocities being confined mostly to March and November. Even in these months the occasional northeasterly gales have usually lost much of their severity before reaching the coast of Maine.

Temperatures well below zero are recorded frequently each winter. Cold waves sometimes come in on strong winds, but extremely low temperatures are generally accompanied by light winds.

The average freeze–free season at the airport station is 139 days. Mid–May is the average occurrence of the last freeze in spring, and the average occurrence of the first freeze in fall is late September. The freeze–free period is longer in the city proper, but may be even shorter at susceptible places further inland.

Daily maximum temperatures at the present airport site agree closely with those near the former intown office, but minimum temperatures on clear, quiet mornings range as much as 15 degrees lower at the airport.

NORMALS, MEANS, AND EXTREMES

PORTLAND, ME (PWM)

LATITUDE:    LONGITUDE:     ELEVATION (FT):     TIME ZONE:    WBAN: 14764

43 38′ 32″ N  70 18′ 16″ W  GRND: 69 BARO: 72  EASTERN (UTC + 5)

2001 Portland, Maine (PWM)

ELEMENT POR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC YEAR
TEMPERATURE F NORMAL DAILY MAXIMUM 30 30.3 33.1 41.4 52.3 63.2 72.7 78.8 77.4 69.3 58.7 47.0 35.1 54.9
MEAN DAILY MAXIMUM 45 30.7 33.3 41.4 52.7 63.5 73.2 78.7 77.5 69.5 58.8 47.4 35.9 55.2
HIGHEST DAILY MAXIMUM 61 64 64 88 85 94 98 99 103 95 88 74 71 103
YEAR OF OCCURRENCE 1950 1957 1998 1957 1987 1991 1977 1975 1983 1963 1987 2001 AUG 1975
MEAN OF EXTREME MAXS. 54 49.1 50.6 59.4 71.7 83.3 89.2 92.0 90.2 86.0 75.8 64.7 54.5 72.2
NORMAL DAILY MINIMUM 30 11.4 13.5 24.5 34.1 43.4 52.1 58.3 57.1 48.9 38.3 30.4 17.8 35.8
MEAN DAILY MINIMUM 45 12.6 14.0 24.5 33.6 43.1 52.3 58.2 56.9 48.8 38.1 30.2 18.2 35.9
LOWEST DAILY MINIMUM 61 -26 -39 -21 8 23 33 40 33 23 15 3 -21 -39
YEAR OF OCCURRENCE 1971 1943 1950 1954 1956 1944 1965 1965 1941 1976 1989 1963 FEB 1943
MEAN OF EXTREME MINS. 54 –9.1 –7.0 3.9 21.7 30.6 40.6 47.6 44.5 33.3 23.6 14.9 –2.7 20.2
NORMAL DRY BULB 30 20.8 23.3 33.0 43.3 53.3 62.4 68.6 67.3 59.1 48.5 38.7 26.5 45.4
MEAN DRY BULB 54 21.8 23.9 32.5 43.1 53.3 62.7 68.6 67.0 58.8 48.6 38.8 27.3 45.5
MEAN WET BULB 49 20.4 22.1 29.5 38.6 48.3 57.3 62.9 61.8 54.8 45.0 36.0 25.0 41.8
MEAN DEW POINT 49 13.4 14.6 22.3 31.9 43.0 53.4 59.3 58.5 51.4 40.5 30.8 18.8 36.5
NORMAL NO. DAYS WITH:
MAXIMUM 90 30 0.0 0.0 0.0 0.0 0.2 0.9 1.9 1.2 0.3 0.0 0.0 0.0 4.5
MAXIMUM 32 30 17.2 12.9 4.1 0.1 0.0 0.0 0.0 0.0 0.0 0.0 1.0 12.4 47.7
MINIMUM 32 30 29.9 26.5 25.2 13.5 2.0 0.0 0.0 0.0 0.8 8.6 19.3 28.9 154.7
MINIMUM 0 30 6.1 3.9 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.8 13.3
H/C NORMAL HEATING DEG. DAYS 30 1370 1168 992 651 363 100 11 39 189 512 789 1194 7378
NORMAL COOLING DEG. DAYS 30 0 0 0 0 0 22 123 111 12 0 0 0 268
RH NORMAL (PERCENT) 30 67 65 66 67 71 75 75 76 77 74 73 70 71
HOUR 01 LST 30 72 70 72 77 82 87 88 88 88 83 79 75 80
HOUR 07 LST 30 73 73 73 72 75 79 81 84 85 84 80 77 78
HOUR 13 LST 30 58 56 56 54 58 60 60 60 60 58 61 60 58
HOUR 19 LST 30 66 64 66 66 69 73 73 76 78 75 73 69 71
S PERCENT POSSIBLE SUNSHINE 55 56 60 56 55 54 60 63 64 63 57 48 53 57
W/O MEAN NO. DAYS WITH:
HEAVY FOG (VISBY 1/4 MI) 61 2.1 2.2 3.4 3.0 4.9 5.0 6.3 5.6 5.0 4.6 3.5 2.0 47.6
THUNDERSTORMS 61 0.0 0.1 0.4 0.5 1.9 4.1 4.5 3.5 1.5 0.6 0.4 0.1 17.6
CLOUDINESS MEAN:
SUNRISE-SUNSET (OKTAS) 1 5.6 6.4
MIDNIGHT-MIDNIGHT (OKTAS)
MEAN NO. DAYS WITH:
CLEAR 1 4.0 2.0 7.0 7.0 6.0 1.0 9.0 3.0 8.0 5.0
PARTLY CLOUDY 1 1.0 3.0 4.0 5.0 1.0 1.0 2.0 4.0
CLOUDY 1 4.0 5.0 7.0 10.0 9.0 2.0 3.0 6.0 3.0 8.0
PR MEAN STATION PRESSURE(IN) 29 29.93 29.93 29.90 29.88 29.89 29.87 29.88 29.94 29.97 29.99 29.96 29.94 29.92
MEAN SEA-LEVEL PRES. (IN) 48 29.98 29.99 29.96 29.94 29.97 29.94 29.96 29.99 30.05 30.06 30.00 30.01 29.99
WINDS MEAN SPEED (MPH) 41 9.2 9.4 10.1 10.1 9.1 8.4 7.7 7.7 8.1 8.5 8.9 8.8 8.8
PREVAIL. DIR (TENS OF DEGS) 24 36 34 32 18 18 18 18 18 18 34 36 34 18
MAXIMUM 2-MINUTE:
SPEED (MPH) 7 38 45 41 40 32 34 32 57 33 37 41 40 57
DIR. (TENS OF DEGS) 16 08 11 29 36 26 02 28 29 36 10 30 28
YEAR OF OCCURRENCE 1996 1995 1999 1995 1995 2000 1999 1998 1995 2000 1997 1997 AUG 1998
MAXIMUM 5-SECOND:
SPEED (MPH) 7 53 56 54 47 44 44 44 61 41 47 72 51 72
DIR. (TENS OF DEGS) 16 07 13 29 32 26 25 28 02 12 15 17 15
YEAR OF OCCURRENCE 1996 1995 2000 1995 1995 2000 1997 1998 1996 1995 1995 2000 NOV 1995
PRECIPITATION NORMAL (IN) 30 3.53 3.33 3.67 4.08 3.62 3.44 3.09 2.87 3.09 3.90 5.17 4.55 44.34
MAXIMUM MONTHLY (IN) 61 11.92 7.10 9.97 9.90 9.64 9.01 7.48 15.22 9.81 16.83 13.50 9.69 16.83
YEAR OF OCCURRENCE 1979 1981 1953 1973 1984 1998 1976 1991 1954 1996 1983 1969 OCT 1996
MINIMUM MONTHLY (IN) 61 0.76 0.04 0.81 0.28 0.49 0.70 0.61 0.27 0.30 0.26 0.90 0.98 0.04
YEAR OF OCCURRENCE 1970 1987 1965 1999 1965 1941 1965 1947 1948 1947 1976 1955 FEB 1987
MAXIMUM IN 24 HOURS (IN) 61 3.56 3.41 3.47 5.26 4.66 5.58 2.68 7.83 7.49 13.32 4.70 3.82 13.32
YEAR OF OCCURRENCE 1977 1981 1951 1973 1989 1967 1996 1991 1954 1996 1990 1969 OCT 1996
NORMAL NO. DAYS WITH:
PRECIPITATION 0.01 30 10.5 9.5 11.4 11.7 12.0 11.4 10.1 9.7 8.9 9.5 11.8 12.2 128.7
PRECIPITATION 1.00 30 0.7 0.8 1.0 0.9 0.7 0.8 0.7 0.6 0.8 1.2 1.7 1.4 11.3
SNOWFALL NORMAL (IN) 30 19.3 16.5 11.6 3.4 0.1 0.0 0.0 0.0 T 0.4 3.2 16.4 70.9
MAXIMUM MONTHLY (IN) 60 62.4 61.2 49.0 15.9 7.0 0.0 0.0 0.0 T 3.8 20.5 54.8 62.4
YEAR OF OCCURRENCE 1979 1969 1993 1982 1945 1992 1969 1997 1970 JAN 1979
MAXIMUM IN 24 HOURS (IN) 60 27.1 21.5 18.6 15.9 7.0 0.0 0.0 0.0 T 3.6 11.1 22.8 27.1
YEAR OF OCCURRENCE 1979 1969 1993 1982 1945 1992 1969 1972 1970 JAN 1979
MAXIMUM SNOW DEPTH (IN) 49 31 31 33 17 1 0 0 0 0 2 10 40 40
YEAR OF OCCURRENCE 1979 1967 1967 1956 1966 1969 1972 1970 DEC 1970
NORMAL NO. DAYS WITH:
SNOWFALL 1.0 30 4.4 3.4 3.1 0.9 0.* 0.0 0.0 0.0 0.0 0.1 1.0 4.3 17.2

2001 Portland, Maine (PWM)

PRECIPITATION (inches) 2001 PORTLAND, ME (PWM)
YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
1972 2.09 5.14 6.01 2.53 3.17 4.24 2.05 0.80 4.31 3.92 7.87 6.49 48.62
1973 2.58 2.57 3.33 9.90 6.28 4.87 1.70 3.48 2.23 3.38 2.40 9.57 52.29
1974 3.41 2.07 3.82 3.82 4.20 4.69 3.66 1.45 5.43 1.74 4.85 4.41 43.55
1975 4.40 2.51 3.20 3.71 1.09 4.87 2.06 3.89 4.34 4.50 6.01 8.14 48.72
1976 4.44 2.84 2.47 2.42 3.99 1.53 7.48 4.87 1.86 5.37 0.90 3.22 41.39
1977 6.46 3.75 6.92 3.46 2.04 3.38 2.83 2.79 4.63 8.30 6.46 6.61 57.63
1978 6.91 0.87 4.19 4.46 4.36 2.42 1.67 2.36 0.59 3.23 2.26 3.15 36.47
1979 11.92 3.50 4.17 6.48 5.15 1.97 5.90 5.53 3.28 6.71 3.95 2.59 61.15
1980 0.98 1.36 4.54 5.78 1.83 3.34 1.99 2.14 3.00 2.99 4.75 1.18 33.88
1981 0.93 7.10 1.44 3.46 2.27 4.59 5.44 2.31 6.14 4.71 2.80 4.51 45.70
1982 5.17 2.53 3.20 4.54 2.91 6.75 2.61 3.35 1.90 1.93 3.61 1.18 39.68
1983 4.59 3.94 9.75 6.82 5.98 1.35 4.31 2.58 1.35 3.38 13.50 8.78 66.33
1984 2.56 4.99 5.12 4.81 9.64 3.87 3.86 2.09 0.84 3.26 3.69 3.44 48.17
1985 1.03 1.54 3.15 1.25 2.03 2.74 3.30 3.18 2.97 4.07 6.36 2.39 34.01
1986 6.58 2.61 4.21 3.49 2.51 3.91 3.44 1.87 2.64 2.09 5.18 5.91 44.44
1987 5.21 0.04 4.29 6.33 2.62 5.01 1.79 2.48 4.64 2.54 3.82 2.01 40.78
1988 1.97 3.34 1.85 3.68 4.27 2.36 5.89 5.24 1.50 3.47 8.84 1.21 43.62
1989 1.15 2.37 2.14 2.94 8.74 4.49 2.50 1.73 4.48 4.81 3.97 2.23 41.55
1990 3.19 2.49 1.42 5.16 5.23 4.12 3.21 1.89 3.12 7.46 7.50 7.90 52.69
1991 2.91 1.85 6.19 6.71 3.77 1.47 2.35 15.22 5.44 2.83 4.34 4.06 57.14
1992 4.80 3.42 3.93 2.47 1.15 3.99 4.06 2.59 3.11 2.48 4.39 2.12 38.51
1993 2.80 3.84 6.26 5.69 1.14 2.89 2.73 1.21 4.10 3.74 4.05 5.40 43.85
1994 5.34 1.29 6.71 2.94 4.87 1.25 1.73 2.82 6.60 0.63 3.67 6.20 44.05
1995 4.92 3.55 2.14 2.36 3.31 2.60 3.14 0.47 2.40 4.78 7.27 4.35 41.29
1996 5.30 3.03 2.68 6.44 3.72 4.35 6.19 0.50 3.54 16.83 1.65 6.53 60.76
1997 4.59 2.48 4.05 5.21 2.41 0.76 2.01 4.15 2.68 1.37 5.21 2.57 37.49
1998 4.83 5.72 4.23 3.36 3.83 9.01 2.92 4.03 3.00 10.45 1.80 1.59 54.77
1999 6.02 3.87 4.52 0.28 4.98 0.95 1.62 1.53 8.79 3.89 2.25 2.00 40.70
2000 3.41 2.88 3.66 5.44 3.07 2.06 4.03 1.81 2.46 3.17 4.19 4.49 40.67
2001 1.33 2.58 8.01 1.26 1.14 5.37 2.05 1.28 4.14 1.72 2.20 2.03 33.11
POR=130 YRS 3.91 3.65 3.99 3.65 3.43 3.25 3.12 3.03 3.28 3.51 4.10 3.95 42.87

2001 Portland, Maine (PWM)

AVERAGE TEMPERATURE (F) 2001 PORTLAND, ME (PWM)
YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
1972 22.2 21.1 28.9 40.6 52.6 59.6 67.5 65.3 58.7 45.2 35.0 24.0 43.4
1973 23.1 23.4 37.7 45.5 51.3 63.8 70.8 70.9 58.4 49.2 37.7 33.5 47.1
1974 23.2 24.5 33.9 45.1 50.6 61.3 68.2 67.9 58.8 44.7 39.3 30.2 45.6
1975 26.7 25.0 29.8 40.0 55.6 61.5 70.1 66.8 57.2 49.3 43.0 24.3 45.8
1976 15.7 28.2 31.5 45.0 52.3 65.9 65.9 65.4 57.3 43.6 36.1 19.4 43.9
1977 14.6 21.9 36.2 42.4 54.4 59.0 68.2 66.6 57.6 48.1 39.4 25.4 44.5
1978 21.1 19.2 30.2 40.6 52.7 61.0 68.0 68.6 57.8 48.2 36.4 26.1 44.2
1979 23.7 15.6 35.6 42.2 55.3 62.7 69.3 64.8 57.4 47.5 42.4 29.8 45.5
1980 22.7 20.5 32.0 44.3 53.7 61.0 69.6 71.2 61.5 45.9 36.2 21.3 45.0
1981 13.8 32.3 35.7 45.2 55.3 63.9 68.8 66.0 58.6 46.6 38.9 29.2 46.2
1982 15.0 23.3 32.1 42.0 54.6 58.3 69.2 64.4 59.2 48.1 41.3 32.0 45.0
1983 25.2 26.2 35.8 44.4 52.0 63.8 69.7 67.6 63.0 47.9 40.2 26.1 46.8
1984 19.8 32.0 28.2 43.3 53.0 63.9 69.6 69.1 57.8 49.6 39.2 31.2 46.4
1985 16.2 26.4 34.8 44.1 53.7 61.7 69.8 66.6 60.7 50.8 39.9 24.6 45.8
1986 25.0 23.4 34.6 46.5 53.6 60.9 66.3 66.2 57.4 47.9 36.3 29.6 45.6
1987 21.6 23.0 34.0 44.9 54.6 63.8 68.0 66.2 59.6 47.1 38.1 30.2 45.9
1988 21.6 25.7 34.2 43.5 54.7 63.8 71.1 71.1 59.4 46.5 41.0 26.0 46.6
1989 26.8 24.0 31.6 41.1 55.6 63.9 69.4 68.0 60.5 49.8 37.3 14.1 45.2
1990 30.2 25.7 34.7 44.6 51.8 62.4 70.3 69.8 59.8 52.4 41.8 33.7 48.1
1991 23.4 29.8 37.0 45.9 58.1 65.5 70.1 69.9 58.2 50.8 40.4 26.4 48.0
1992 23.9 25.9 30.9 41.4 51.9 63.4 65.8 66.8 58.9 47.3 37.6 28.9 45.2
1993 23.4 16.8 29.8 43.3 54.8 64.5 69.8 69.5 59.6 46.2 39.0 29.9 45.6
1994 14.0 19.6 33.5 44.5 52.3 66.0 72.4 66.4 58.4 49.5 41.5 31.5 45.8
1995 27.1 21.2 34.8 41.2 52.1 64.1 70.0 67.4 56.4 52.4 35.7 24.5 45.6
1996 21.4 23.9 29.8 42.9 52.5 63.0 66.4 67.4 59.8 46.8 35.1 34.5 45.3
1997 23.4 28.7 30.4 41.8 51.1 63.3 69.0 67.3 58.7 47.0 36.2 29.5 45.5
1998 27.1 31.3 36.7 45.8 56.8 60.7 69.5 69.5 61.2 49.2 39.4 32.5 48.3
1999 22.3 29.0 35.6 44.9 54.5 66.3 71.3 67.7 63.3 46.6 42.0 31.9 48.0
2000 21.5 26.4 37.8 43.3 53.2 63.7 67.1 67.3 59.9 48.9 40.4 24.6 46.2
2001 20.6 24.3 30.6 43.3 54.9 67.2 66.5 69.4 61.0 50.2 41.4 34.8 47.0
POR=127 YRS 22.2 23.6 32.4 42.9 53.3 62.4 68.3 66.7 59.4 49.3 38.6 27.1 45.5

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 Portland, Maine (PWM)

HEATING DEGREE DAYS (base 65 F) 2001 PORTLAND, ME (PWM)
YEAR JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN TOTAL
1972–73 27 53 190 607 893 1264 1292 1157 842 575 419 99 7418
1973–74 0 9 231 480 813 970 1290 1126 958 595 444 131 7047
1974–75 15 17 206 624 762 1071 1177 1112 1086 746 286 146 7248
1975–76 13 59 230 480 653 1258 1522 1061 1030 594 389 94 7383
1976–77 45 73 229 660 858 1404 1559 1199 888 674 354 184 8127
1977–78 29 54 233 518 761 1219 1353 1276 1071 724 377 134 7749
1978–79 39 32 230 513 852 1201 1272 1380 905 677 311 97 7509
1979–80 21 82 240 539 672 1083 1305 1284 1018 613 346 163 7366
1980–81 16 6 163 584 855 1349 1578 910 901 588 312 54 7316
1981–82 16 45 189 566 778 1102 1543 1161 1014 684 320 198 7616
1982–83 20 78 185 519 704 1015 1225 1080 895 612 393 101 6827
1983–84 8 38 139 527 738 1198 1397 949 1132 642 368 110 7246
1984–85 11 13 223 469 767 1043 1506 1076 930 620 347 115 7120
1985–86 4 32 157 433 747 1245 1236 1161 935 548 354 138 6990
1986–87 47 52 242 523 855 1092 1336 1172 955 597 343 77 7291
1987–88 20 58 171 548 798 1070 1339 1130 950 641 323 112 7160
1988–89 13 32 180 569 713 1201 1174 1141 1028 708 286 91 7136
1989–90 6 25 167 464 824 1573 1071 1093 935 607 402 107 7274
1990–91 12 24 170 388 690 964 1283 979 861 568 236 76 6251
1991–92 11 16 228 433 730 1191 1267 1127 1051 700 414 84 7252
1992–93 47 30 208 543 814 1112 1280 1344 1084 645 311 81 7499
1993–94 15 5 192 575 774 1080 1577 1266 968 609 389 61 7511
1994–95 1 35 201 472 697 1028 1167 1216 929 706 391 85 6928
1995–96 9 35 265 380 873 1248 1343 1181 1083 659 384 90 7550
1996–97 23 17 179 556 889 940 1284 1011 1065 689 424 135 7212
1997–98 11 21 192 554 857 1093 1164 938 872 569 264 143 6678
1998–99 3 9 124 482 761 1002 1314 1002 903 599 322 61 6582
1999–00 6 23 105 563 686 1020 1341 1113 838 645 361 112 6813
2000–01 11 18 184 491 729 1247 1371 1134 1060 643 330 57 7275
2001– 32 15 140 456 702 928

2001 Portland, Maine (PWM)

COOLING DEGREE DAYS (base 65 F) 2001 PORTLAND, ME (PWM)
YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
1972 0 0 0 0 0 3 114 71 8 0 0 0 196
1973 0 0 0 0 1 71 189 201 40 0 0 0 502
1974 0 0 0 2 4 26 121 115 28 0 0 0 296
1975 0 0 0 0 1 49 179 120 2 0 0 0 351
1976 0 0 0 0 2 128 80 93 5 0 0 0 308
1977 0 0 0 1 32 12 135 109 19 0 0 0 308
1978 0 0 0 0 6 22 138 150 20 0 0 0 336
1979 0 0 0 0 15 34 162 83 19 3 0 0 316
1980 0 0 0 0 1 50 163 205 67 0 0 0 486
1981 0 0 0 0 20 30 138 84 5 0 0 0 277
1982 0 0 0 0 6 4 158 66 17 0 0 0 251
1983 0 0 0 0 0 73 161 125 84 3 0 0 446
1984 0 0 0 0 0 84 162 147 12 0 0 0 405
1985 0 0 0 0 5 25 161 92 35 1 0 0 319
1986 0 0 0 0 8 23 93 96 19 0 0 0 239
1987 0 0 0 0 28 47 121 103 17 0 0 0 316
1988 0 0 0 0 11 85 209 227 17 2 0 0 551
1989 0 0 0 0 2 67 151 126 38 0 0 0 384
1990 0 0 0 0 0 34 181 179 19 7 0 0 420
1991 0 0 0 0 29 96 178 176 31 0 0 0 510
1992 0 0 0 0 13 43 76 93 30 0 0 0 255
1993 0 0 0 0 1 72 170 150 37 0 0 0 430
1994 0 0 0 0 1 101 237 89 10 0 0 0 438
1995 0 0 0 0 3 67 174 118 14 0 0 0 376
1996 0 0 0 0 5 38 75 99 29 0 0 0 246
1997 0 0 0 0 0 90 145 100 8 2 0 0 345
1998 0 0 2 0 15 21 152 154 17 0 0 0 361
1999 0 0 0 0 4 109 208 116 59 0 0 0 496
2000 0 0 0 0 1 76 81 97 37 1 0 0 293
2001 0 0 0 0 23 127 85 161 25 3 0 0 424

2001 Portland, Maine (PWM)

SNOWFALL (inches) 2001 PORTLAND, ME (PWM)
YEAR JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN TOTAL
1972–73 0.0 0.0 0.0 T 15.6 35.1 9.6 6.6 0.5 2.3 0.0 0.0 69.7
1973–74 0.0 0.0 0.0 0.0 0.0 7.2 15.0 4.3 6.2 8.3 0.0 0.0 41.0
1974–75 0.0 0.0 0.0 T 3.2 8.2 15.4 11.6 6.3 1.7 0.0 0.0 46.4
1975–76 0.0 0.0 0.0 T 3.6 25.3 18.1 4.9 22.2 T 0.0 0.0 74.1
1976–77 0.0 0.0 0.0 0.0 1.5 23.3 35.2 7.9 19.3 1.4 T 0.0 88.6
1977–78 0.0 0.0 0.0 0.0 1.9 23.1 30.7 8.2 12.5 0.8 0.0 0.0 77.2
1978–79 0.0 0.0 0.0 0.0 3.6 18.9 62.4 4.5 T 2.9 0.0 0.0 92.3
1979–80 0.0 0.0 0.0 1.7 T 1.8 6.0 11.2 6.8 0.0 0.0 0.0 27.5
1980–81 0.0 0.0 0.0 0.0 8.9 13.0 9.2 4.6 3.1 T 0.0 0.0 38.8
1981–82 0.0 0.0 0.0 0.0 T 24.0 25.9 11.0 8.5 15.9 0.0 0.0 85.3
1982–83 0.0 0.0 0.0 0.0 0.6 5.7 12.4 24.5 2.1 T 0.0 0.0 45.3
1983–84 0.0 0.0 0.0 0.0 T 12.6 28.3 3.3 26.4 T 0.0 0.0 70.6
1984–85 0.0 0.0 0.0 0.0 T 17.0 12.1 7.2 13.1 2.4 0.0 0.0 51.8
1985–86 0.0 0.0 0.0 0.0 3.1 11.2 18.6 12.0 6.4 T 0.0 0.0 51.3
1986–87 0.0 0.0 0.0 0.0 5.2 4.0 50.7 0.8 14.3 3.4 0.0 0.0 78.4
1987–88 0.0 0.0 T 0.0 5.4 9.1 19.8 20.8 3.0 4.2 0.0 0.0 62.3
1988–89 0.0 0.0 0.0 T T 3.5 4.0 13.8 8.9 0.7 0.0 0.0 30.9
1989–90 0.0 0.0 0.0 0.0 5.0 15.6 20.4 25.6 3.2 T 0.0 0.0 69.8
1990–91 0.0 0.0 T 0.0 0.2 6.8 13.4 6.3 5.7 T 0.0 0.0 32.4
1991–92 0.0 0.0 0.0 0.0 T 22.5 2.4 10.3 13.4 10.0 0.0 0.0 58.6
1992–93 0.0 0.0 T T 2.8 2.1 17.1 33.5 49.0 11.1 0.0 0.0 115.6
1993–94 0.0 0.0 0.0 0.2 T 12.3 39.3 12.2 12.2 T 0.0 0.0 76.2
1994–95 0.0 0.0 15.5 17.3 1.4 0.0 0.0 0.0
1995–96 0.0 0.0 0.0 0.0 2.0 37.3 37.1 13.1 25.0 8.5
1996–97 1.4
1997–98 20.5 6.3 17.1 0.9 9.7 0.0 0.0 0.0
1998–99 0.0 0.0 0.0 0.0 T 11.7 19.2 5.1 17.5 0.0 0.0 0.0 53.5
1999–00 0.0 0.0 0.0 0.0 T T 14.9 14.6 11.6 T 0.0 0.0 41.1
2000–01 0.0 0.0 0.0 T T 18.8 15.5 24.2 40.5 0.3 0.0 0.0 99.3
2001– 0.0 0.0 0.0 T T 5.0
POR=60 YRS 0.0 0.0 T 0.2 3.0 14.3 19.4 16.8 13.5 2.9 0.2 0.0 70.3



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Mar 26, 2012 @ 2:02 am
I was seriuolsy at DefCon 5 until I saw this post.

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2001 Portland, Maine (PWM) forum