2001 MILWAUKEE, WISCONSIN (MKE)



Milwaukee possesses a continental climate characterized by a wide range of temperatures between summer and winter. Precipitation is moderate and occurs mostly in the spring, less in the autumn, and very little in the wintertime. Rainfall is well distributed for agricultural purposes, although spring planting is sometimes delayed by wet ground and cold weather.

Milwaukee is in a region of frequently changeable weather and its climate is influenced by general easterly–moving storms which traverse the nations midsection. The most severe winter storms, which produce in excess of 10 inches of snow, develop in the southern Great Plains and move northeast across Illinois and Indiana.

Occasionally during the cold season, frigid air masses from Canada push southeast across the Great Lakes region. These arctic air masses account for the coldest winter temperatures. Very low temperatures, zero degrees or lower, most often occur in air that flows southward to the west of Lake Superior before reaching the Milwaukee area. If northwesterly wind circulation persists, repeated incursions of arctic air will result in a period of bitterly cold weather lasting several days.

Summer temperatures, which reach into the 90s but rarely exceed 100 degrees, occur with brisk southwest winds that carry hot air from the plains and lower Mississippi River Valley across the city. A combination of high temperatures and humidity occasionally develops, usually building up over a period of several days when persistent southerly winds transport moisture from the Gulf of Mexico into the area.

The Gulf is a major source of moisture for Milwaukee in all seasons, but the type of precipitation which results is dependent upon the time of year. Cold–season precipitation (rain, snow, or a mixture) is usually of relatively long duration and low intensity, and occasionally persists for two days or more, whereas in the warm season, relatively short–duration and high–intensity showery rainfall, usually lasting a few hours or less, predominates.

The Great Lakes significantly influence the local climate. Temperature extremes are modified by Lake Michigan and, to a lesser extent, the other Great Lakes. In late autumn and winter, air masses that are initially very cold often reach the city only after being tempered by passage over one or more of the lakes. Similarly, air masses that approach from the northeast in the spring and summer are cooler because of movement over the Great Lakes.

The influence of Lake Michigan is variable and occasionally dramatic, especially when the temperature of the lake water differs strongly from the air temperature. During the spring and early summer, a wind shift from a westerly to an easterly direction frequently causes a sudden 10 to 20 degree temperature drop. When the breeze off the lake is light, this effect reaches inland only a mile or two. With stronger on–shore winds, the entire city is cooled. In the winter the relatively warm water of the lake moderates the temperature during easterly wind situations. Lake–induced snows usually occur a few times each winter, but snow accumulation is rarely heavy.

Topography does not significantly affect air flow, except that lesser frictional drag over Lake Michigan causes winds to be frequently stronger along the lake shore, and often permits air masses approaching from the north to reach shore areas one hour or more before affecting inland portions of the city.

NORMALS, MEANS, AND EXTREMES

MILWAUKEE, WI (MKE)

LATITUDE:    LONGITUDE:     ELEVATION (FT):    TIME ZONE:  WBAN:  14839

42 56′ 48″ N  87 53′ 49″ W  GRND:  677  BARO: � A0;680  CENTRAL  (UTC + 6)

2001 Milwaukee, Wisconsin (MKE)

ELEMENT POR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC YEAR
TEMPERATURE F NORMAL DAILY MAXIMUM 30 26.1 30.1 40.4 52.9 64.3 74.9 79.9 77.8 70.6 58.7 44.7 31.2 54.3
MEAN DAILY MAXIMUM 54 27.6 31.7 40.7 53.7 65.1 75.7 80.3 78.7 71.2 60.0 45.3 32.5 55.2
HIGHEST DAILY MAXIMUM 61 62 68 82 91 93 101 103 103 98 89 77 68 103
YEAR OF OCCURRENCE 1944 1999 1986 1980 1991 1988 1995 1988 1953 1963 1950 2001 JUL 1995
MEAN OF EXTREME MAXS. 54 46.0 48.3 65.4 77.7 85.4 91.6 93.3 91.9 87.5 78.7 64.5 51.9 73.5
NORMAL DAILY MINIMUM 30 11.6 15.9 26.2 35.8 44.8 55.0 62.0 60.8 52.8 41.8 30.7 17.5 37.9
MEAN DAILY MINIMUM 54 13.0 17.4 26.0 36.4 45.5 55.7 62.2 61.5 53.3 42.4 30.6 19.0 38.6
LOWEST DAILY MINIMUM 61 -26 -26 -10 12 21 33 40 44 28 18 -5 -20 -26
YEAR OF OCCURRENCE 1982 1996 1962 1982 1966 1945 1965 1982 1974 1981 1950 1983 FEB 1996
MEAN OF EXTREME MINS. 54 -9.5 -3.0 8.4 23.3 33.6 43.5 51.2 50.6 38.9 27.9 14.0 -1.7 23.1
NORMAL DRY BULB 30 18.9 23.0 33.3 44.4 54.6 65.0 70.9 69.3 61.7 50.3 37.7 24.4 46.1
MEAN DRY BULB 54 20.3 24.5 33.5 44.9 55.4 65.6 71.2 70.1 62.3 51.3 37.8 25.7 46.9
MEAN WET BULB 16 21.4 24.8 31.8 40.7 50.7 60.3 65.6 65.1 54.5 46.8 35.5 23.4 43.4
MEAN DEW POINT 16 16.3 18.2 25.6 34.4 44.9 55.4 61.7 61.6 50.6 41.3 30.2 18.6 38.2
NORMAL NO. DAYS WITH:
MAXIMUM 90 30 0.0 0.0 0.0 * 0.1 2.1 4.1 2.3 0.6 0.0 0.0 0.0 9.2
MAXIMUM 32 30 20.1 15.6 6.4 0.5 0.0 0.0 0.0 0.0 0.0 0.0 2.6 15.4 60.6
MINIMUM 32 30 29.7 26.1 23.6 9.9 1.1 0.0 0.0 0.0 0.1 4.3 18.0 28.0 140.8
MINIMUM 0 30 7.6 3.5 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 3.3 14.7
H/C NORMAL HEATING DEG. DAYS 30 1429 1176 983 618 338 82 14 27 123 456 819 1259 7324
NORMAL COOLING DEG. DAYS 30 0 0 0 0 16 82 197 160 24 0 0 0 479
RH NORMAL (PERCENT) 30 72 72 71 68 68 70 72 75 75 72 74 76 72
HOUR 00 LST 30 75 74 75 74 75 77 80 84 83 78 78 78 78
HOUR 06 LST 30 76 77 78 78 78 79 82 86 87 82 80 80 80
HOUR 12 LST 30 68 67 64 60 60 60 61 63 63 62 67 72 64
HOUR 18 LST 30 71 70 68 63 62 62 63 68 71 70 74 75 68
S PERCENT POSSIBLE SUNSHINE 56 44 47 50 53 60 65 69 66 59 54 39 38 54
W/O MEAN NO. DAYS WITH:
HEAVY FOG(VISBY 1/4 MI) 61 2.1 2.2 3.1 2.9 3.1 2.5 1.3 1.7 1.3 2.0 2.1 2.1 26.4
THUNDERSTORMS 61 0.3 0.3 1.4 3.4 4.3 6.3 6.6 5.7 3.9 1.6 1.1 0.3 35.2
CLOUDINESS MEAN:
SUNRISE-SUNSET (OKTAS)
MIDNIGHT-MIDNIGHT (OKTAS)
MEAN NO. DAYS WITH:
CLEAR 1 1.0 2.0 6.0
PARTLY CLOUDY 1 1.0 1.0 1.0
CLOUDY 1 1.0 3.0 10.0
PR MEAN STATION PRESSURE(IN) 28 29.29 29.32 29.25 29.22 29.22 29.21 29.25 29.29 29.30 29.30 29.27 29.31 29.27
MEAN SEA-LEVEL PRES. (IN) 16 30.06 30.09 30.05 29.96 29.97 29.94 29.97 30.02 30.03 30.05 30.03 30.09 30.02
WINDS MEAN SPEED (MPH) 49 12.4 12.2 12.5 12.7 11.5 10.2 9.7 9.5 10.3 11.3 12.2 12.1 11.4
PREVAIL. DIR (TENS OF DEGS) 33 29 30 30 03 02 03 24 24 21 21 30 30 30
MAXIMUM 2-MINUTE:
SPEED (MPH) 6 44 52 41 48 46 47 36 36 41 43 52 38 52
DIR. (TENS OF DEGS) 08 27 26 24 30 31 31 23 07 24 23 23 27
YEAR OF OCCURRENCE 1999 1999 1999 1997 1998 2001 2001 2000 2001 1996 1998 2001 FEB 1999
MAXIMUM 5-SECOND:
SPEED (MPH) 6 51 70 53 62 61 69 44 48 47 48 68 47 70
DIR. (TENS OF DEGS) 08 25 01 24 30 28 29 22 07 25 23 23 25
YEAR OF OCCURRENCE 1999 1999 1996 1997 1998 2001 1999 2000 2001 2001 1998 2001 FEB 1999
PRECIPITATION NORMAL (IN) 30 1.60 1.45 2.67 3.50 2.84 3.24 3.47 3.53 3.38 2.41 2.51 2.33 32.93
MAXIMUM MONTHLY (IN) 61 4.38 3.94 6.93 7.31 8.42 9.98 7.66 9.05 9.87 7.03 7.11 5.42 9.98
YEAR OF OCCURRENCE 1999 1986 1976 1973 2000 1997 1964 1987 1941 1991 1985 1987 JUN 1997
MINIMUM MONTHLY (IN) 61 0.31 0.05 0.31 0.81 0.50 0.70 0.95 0.46 0.02 0.15 0.62 0.29 0.02
YEAR OF OCCURRENCE 1981 1969 1968 1942 1988 1988 1946 1948 1979 1956 1949 1976 SEP 1979
MAXIMUM IN 24 HOURS (IN) 61 1.73 1.92 2.57 3.11 3.11 4.23 4.42 6.84 5.28 2.60 2.69 2.24 6.84
YEAR OF OCCURRENCE 1985 2001 1960 1976 1978 1997 2000 1986 1941 1959 1998 1982 AUG 1986
NORMAL NO. DAYS WITH:
PRECIPITATION 0.01 30 11.6 9.8 12.3 12.4 11.3 10.5 9.7 9.3 9.5 9.7 10.6 12.0 128.7
PRECIPITATION 1.00 30 0.2 0.2 0.4 0.8 0.6 0.8 1.0 0.8 0.9 0.4 0.3 0.4 6.8
SNOWFALL NORMAL (IN) 30 12.9 11.1 8.8 2.5 0.1 0.0 0.0 0.0 0.0 0.4 2.7 11.4 49.9
MAXIMUM MONTHLY (IN) 61 39.0 42.0 26.7 15.8 3.2 T T T T 6.3 16.1 49.5 49.5
YEAR OF OCCURRENCE 1999 1974 1965 1973 1990 1992 1990 1989 1993 1989 1977 2000 DEC 2000
MAXIMUM IN 24 HOURS (IN) 61 13.8 16.7 11.2 11.6 3.2 T T T T 6.3 10.6 13.6 16.7
YEAR OF OCCURRENCE 1990 1960 1961 1973 1990 1992 1990 1989 1993 1989 1977 2000 FEB 1960
MAXIMUM SNOW DEPTH (IN) 53 33 29 24 13 2 0 0 0 0 6 11 32 33
YEAR OF OCCURRENCE 1979 1979 1960 1973 1990 1989 1977 2000 JAN 1979
NORMAL NO. DAYS WITH:
SNOWFALL 1.0 30 3.8 2.9 2.4 0.5 0.* 0.0 0.0 0.0 0.0 0.1 0.7 3.3 13.7

2001 Milwaukee, Wisconsin (MKE)

PRECIPITATION (inches) 2001 MILWAUKEE, WI (MKE)
YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
1972 0.75 0.86 2.57 2.76 2.33 3.33 4.60 4.82 7.57 3.28 1.34 2.47 36.68
1973 1.12 1.51 2.86 7.31 3.39 1.96 1.55 0.95 4.50 2.97 1.83 3.80 33.75
1974 3.61 3.10 4.29 3.83 4.10 3.48 3.51 2.54 0.50 1.96 1.86 2.10 34.88
1975 2.25 2.53 3.01 4.08 2.01 3.99 1.14 3.89 1.00 0.72 2.83 1.70 29.15
1976 1.16 2.65 6.93 5.01 3.77 2.27 2.12 2.05 1.70 2.82 0.65 0.29 31.42
1977 0.90 0.59 4.56 2.09 0.90 5.78 5.99 3.82 4.11 2.02 2.56 3.27 36.59
1978 2.03 0.55 1.08 4.41 4.66 4.52 5.98 3.43 6.81 2.22 2.13 2.92 40.74
1979 3.00 0.97 4.17 5.43 1.82 2.84 1.06 4.85 0.02 1.77 2.67 2.27 30.87
1980 1.65 1.75 0.77 4.02 1.81 4.67 3.39 5.06 3.57 1.63 1.57 3.52 33.41
1981 0.31 2.88 0.51 4.87 3.05 2.39 4.35 4.26 5.47 2.71 2.05 1.03 33.88
1982 2.92 0.29 3.20 4.47 2.76 3.06 3.88 3.33 0.64 3.17 4.74 4.10 36.56
1983 0.75 2.23 4.12 4.66 5.83 1.41 1.34 4.70 2.79 2.65 4.10 2.89 37.47
1984 0.79 1.20 2.17 5.04 4.21 4.07 3.39 2.93 2.51 5.30 3.74 4.25 39.60
1985 1.94 2.34 4.11 1.93 2.73 1.27 2.18 2.23 3.44 5.39 7.11 2.62 37.29
1986 0.91 3.94 1.85 1.83 2.74 4.51 6.15 8.82 7.26 2.24 0.89 1.03 42.17
1987 1.22 1.22 1.74 4.26 3.76 2.23 4.20 9.05 2.22 1.09 2.73 5.42 39.14
1988 3.25 1.29 1.30 4.12 0.50 0.70 1.53 3.25 4.94 2.97 5.15 1.43 30.43
1989 0.86 0.69 3.03 1.33 2.86 1.89 6.16 5.19 3.25 2.67 1.90 0.47 30.30
1990 2.57 1.90 2.75 2.67 7.56 4.97 3.02 4.68 1.89 2.65 3.54 2.66 40.86
1991 1.55 0.38 4.06 3.70 4.25 2.13 4.34 2.27 4.34 7.03 3.36 1.94 39.35
1992 1.09 1.54 2.61 2.41 0.60 3.13 5.64 3.50 4.13 1.45 5.40 2.45 33.95
1993 2.63 0.98 3.19 6.64 1.56 6.39 4.22 4.20 3.91 0.44 1.98 0.70 36.84
1994 2.20 3.52 1.21 2.35 0.67 3.08 2.51 4.91 1.68 0.78 3.31 1.14 27.36
1995 2.14 0.25 1.76 3.86 3.41 1.46 2.80 5.83 1.24 4.64 3.42 0.53 31.34
1996 1.66 0.52 0.76 2.99 2.89 5.47 1.61 1.24 1.82 3.00 0.63 1.53 24.12
1997 1.59 2.47 0.63 2.16 1.95 9.98 3.59 3.95 2.91 1.11 1.11 1.30 32.75
1998 3.60 2.19 3.18 4.18 2.48 2.82 1.78 5.98 2.17 2.47 2.91 0.88 34.64
1999 4.38 0.98 1.35 6.14 3.74 6.96 5.58 1.69 4.16 0.94 0.70 1.26 37.88
2000 1.20 1.66 1.12 3.64 8.42 3.42 7.12 5.17 7.04 0.84 2.33 2.41 44.37
2001 1.11 3.48 0.67 3.45 4.68 4.13 2.70 5.41 4.76 4.29 1.19 0.86 36.73
POR=55 YRS 1.87 1.64 2.39 3.02 3.26 3.65 3.12 3.16 3.24 2.34 2.12 1.80 31.61

2001 Milwaukee, Wisconsin (MKE)

AVERAGE TEMPERATURE (F) 2001 MILWAUKEE, WI (MKE)
YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
1972 15.9 19.8 27.7 39.4 55.0 61.6 69.3 69.1 61.3 47.5 36.2 20.2 43.6
1973 24.7 25.4 39.9 42.7 51.0 69.2 71.4 72.5 63.9 54.6 38.5 25.5 48.3
1974 21.6 22.9 33.8 46.1 50.6 62.4 71.5 67.3 58.0 49.9 38.6 29.1 46.0
1975 24.0 23.5 28.6 37.7 57.1 65.7 71.7 71.2 58.5 54.1 44.5 27.9 47.0
1976 18.5 31.1 38.6 48.7 52.6 68.2 72.6 69.9 62.6 45.9 29.5 16.3 46.2
1977 8.3 23.7 39.2 48.9 61.3 62.5 73.1 67.2 61.9 49.0 37.1 22.8 46.3
1978 15.4 16.4 29.8 42.5 55.2 65.2 68.6 69.9 65.8 49.5 38.2 23.8 45.0
1979 11.6 15.1 33.2 42.1 54.9 64.7 70.9 68.8 64.7 51.1 38.2 31.4 45.6
1980 20.7 20.3 30.5 45.3 57.2 61.3 71.2 69.7 61.1 45.7 37.7 24.4 45.4
1981 18.9 25.3 35.6 46.5 51.5 65.2 67.3 67.8 59.1 45.8 37.4 24.2 45.4
1982 9.7 19.4 31.5 41.2 58.5 59.8 71.1 67.3 60.8 52.7 38.0 33.2 45.3
1983 26.4 29.4 35.0 41.7 50.2 66.3 76.2 74.4 62.9 52.0 39.9 14.4 47.4
1984 18.9 33.4 29.2 45.5 54.9 68.7 71.7 73.3 60.9 52.9 37.7 29.1 48.0
1985 15.2 21.3 37.9 50.8 58.8 63.8 72.4 68.4 64.3 50.7 36.7 15.7 46.3
1986 21.9 23.3 38.1 48.5 56.1 63.3 72.5 67.1 63.8 51.6 35.1 29.2 47.5
1987 24.8 32.0 37.8 48.0 60.1 72.2 74.8 69.9 63.3 46.2 41.9 31.4 50.2
1988 18.3 20.1 34.8 45.7 58.7 70.2 75.4 75.7 63.5 45.8 40.7 26.6 48.0
1989 30.4 18.0 32.4 43.2 54.9 64.4 71.6 68.8 60.2 52.7 35.1 16.7 45.7
1990 31.1 28.9 38.8 49.3 52.8 67.6 70.5 71.2 66.0 51.5 44.5 26.9 49.9
1991 20.1 29.9 38.2 49.7 63.2 70.7 74.4 73.5 63.2 52.3 35.1 29.6 50.0
1992 27.9 31.9 35.4 42.9 56.7 63.0 67.7 67.4 61.6 49.8 37.3 28.2 47.5
1993 25.7 24.4 32.5 43.0 56.9 63.8 73.0 73.6 60.6 51.0 39.5 29.9 47.8
1994 14.8 21.6 35.8 48.1 57.0 70.2 73.7 70.1 67.5 55.9 43.7 34.5 49.4
1995 25.3 25.5 38.7 44.0 57.8 71.4 74.4 75.7 61.1 52.8 31.1 24.1 48.5
1996 20.7 24.0 29.8 42.4 52.0 65.2 68.7 72.4 63.8 52.3 33.1 27.1 46.0
1997 20.4 28.2 35.9 43.6 49.6 64.8 69.2 66.5 61.4 51.6 34.8 30.4 46.4
1998 26.9 34.6 35.9 45.8 59.9 66.7 72.4 72.5 67.0 54.0 43.0 32.0 50.9
1999 20.2 32.0 34.6 46.2 58.1 67.2 76.5 68.8 63.4 52.3 44.8 29.3 49.5
2000 23.6 32.2 41.9 44.3 58.0 65.9 68.2 70.7 62.2 54.7 36.9 16.6 47.9
2001 24.8 23.5 32.5 49.0 56.8 66.2 72.4 72.9 61.2 51.2 47.5 32.9 49.2
POR=55 YRS 21.0 24.1 33.4 44.6 54.8 64.8 71.1 70.0 62.6 51.4 38.0 26.2 46.8

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 Milwaukee, Wisconsin (MKE)

HEATING DEGREE DAYS (base 65 F) 2001 MILWAUKEE, WI (MKE)
YEAR JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN TOTAL
1972-73 40 32 133 534 859 1381 1242 1101 769 659 426 6 7182
1973-74 10 5 111 324 788 1218 1340 1173 959 560 448 106 7042
1974-75 0 20 237 461 786 1103 1260 1157 1122 814 267 69 7296
1975-76 17 4 203 353 610 1144 1438 978 813 507 382 43 6492
1976-77 2 21 124 589 1056 1504 1754 1152 790 490 173 151 7806
1977-78 8 47 106 485 827 1302 1531 1356 1086 667 335 83 7833
1978-79 21 5 76 473 796 1273 1654 1391 980 681 322 91 7763
1979-80 20 25 70 436 797 1036 1368 1290 1063 594 259 154 7112
1980-81 8 9 140 590 812 1250 1423 1106 905 548 417 69 7277
1981-82 44 21 187 590 820 1257 1712 1272 1032 707 215 172 8029
1982-83 3 44 170 381 802 983 1186 990 925 692 453 81 6710
1983-84 10 0 148 405 748 1565 1424 910 1103 579 318 35 7245
1984-85 3 7 179 373 812 1103 1542 1215 831 461 222 96 6844
1985-86 2 13 139 436 843 1523 1328 1161 827 494 302 128 7196
1986-87 13 34 98 407 891 1106 1242 917 839 502 236 19 6304
1987-88 12 28 91 576 686 1037 1442 1294 930 571 245 55 6967
1988-89 3 7 87 587 720 1183 1065 1307 1006 649 324 85 7023
1989-90 0 16 166 381 890 1493 1040 1004 805 502 375 51 6723
1990-91 21 9 93 418 612 1173 1385 980 822 467 201 26 6207
1991-92 0 1 160 394 889 1091 1141 955 914 655 278 104 6582
1992-93 27 35 145 472 825 1132 1211 1132 1004 654 245 104 6986
1993-94 1 2 158 428 757 1080 1553 1211 899 502 286 55 6932
1994-95 0 22 49 284 633 937 1222 1096 807 623 230 31 5934
1995-96 1 0 171 379 1013 1260 1365 1180 1084 672 431 102 7658
1996-97 17 0 103 398 950 1167 1376 1026 896 635 470 100 7138
1997-98 23 37 129 441 899 1069 1176 847 897 571 203 100 6392
1998-99 0 0 47 337 653 1017 1380 919 936 558 239 78 6164
1999-00 0 9 113 388 598 1100 1275 945 711 616 252 84 6091
2000-01 25 8 151 323 836 1491 1239 1155 1001 481 267 99 7076
2001- 16 0 146 420 522 992

2001 Milwaukee, Wisconsin (MKE)

COOLING DEGREE DAYS (base 65 F) 2001 MILWAUKEE, WI (MKE)
YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
1972 0 0 0 0 3 42 180 166 26 0 0 0 417
1973 0 0 0 0 0 140 216 247 84 6 0 0 693
1974 0 0 0 3 6 36 210 98 32 1 0 0 386
1975 0 0 0 0 30 98 230 203 16 21 0 0 598
1976 0 0 0 24 5 144 247 181 62 4 0 0 667
1977 0 0 0 12 65 81 264 122 20 0 0 0 564
1978 0 0 0 0 40 97 138 164 109 0 0 0 548
1979 0 0 0 0 16 87 209 147 68 11 0 0 538
1980 0 0 0 9 25 50 207 164 29 0 0 0 484
1981 0 0 0 2 3 84 121 112 16 0 0 0 338
1982 0 0 0 0 21 24 199 121 51 5 0 0 421
1983 0 0 0 0 0 127 364 299 92 9 0 0 891
1984 0 0 0 1 11 152 216 270 63 3 0 0 716
1985 0 0 0 42 35 68 240 127 127 0 0 0 639
1986 0 0 3 7 31 84 251 105 70 0 0 0 551
1987 0 0 0 2 87 244 323 189 47 0 1 0 893
1988 0 0 0 0 57 215 333 344 48 0 0 0 997
1989 0 0 2 0 16 76 214 144 29 4 0 0 485
1990 0 0 2 38 5 135 198 210 132 7 1 0 728
1991 0 0 0 13 150 204 300 268 114 7 0 0 1056
1992 0 0 0 0 25 49 117 119 50 4 0 0 364
1993 0 0 0 0 5 73 258 277 35 3 0 0 651
1994 0 0 0 5 46 218 278 187 133 10 0 0 877
1995 0 0 0 0 16 232 297 338 61 8 0 0 952
1996 0 0 0 0 37 112 140 237 75 7 0 0 608
1997 0 0 0 0 0 103 158 89 26 31 0 0 407
1998 0 0 3 0 51 157 235 238 114 2 0 0 800
1999 0 0 0 0 31 151 363 136 71 0 1 0 753
2000 0 0 1 0 44 116 131 188 76 10 0 0 566
2001 0 0 0 5 20 143 252 250 39 2 0 0 711

2001 Milwaukee, Wisconsin (MKE)

SNOWFALL (inches) 2001 MILWAUKEE, WI (MKE)
YEAR JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN TOTAL
1972-73 0.0 0.0 0.0 T 3.4 13.7 0.2 9.9 1.8 15.8 T 0.0 44.8
1973-74 0.0 0.0 0.0 0.0 T 19.6 14.2 42.0 7.4 T 0.0 0.0 83.2
1974-75 0.0 0.0 0.0 T 2.0 9.1 3.5 12.2 15.1 10.4 0.0 0.0 52.3
1975-76 0.0 0.0 0.0 0.0 8.4 12.2 14.8 7.6 2.1 0.1 T 0.0 45.2
1976-77 0.0 0.0 0.0 4.0 3.6 5.3 15.6 5.6 12.4 2.1 0.0 0.0 48.6
1977-78 0.0 0.0 0.0 T 16.1 20.8 25.7 13.3 4.8 T 0.0 0.0 80.7
1978-79 0.0 0.0 0.0 0.0 5.3 27.9 33.6 9.1 6.2 0.8 0.0 0.0 82.9
1979-80 0.0 0.0 0.0 T 2.1 0.6 11.6 22.8 6.3 3.6 T 0.0 47.0
1980-81 0.0 0.0 0.0 T 2.3 17.5 4.9 15.7 1.5 T 0.0 0.0 41.9
1981-82 0.0 0.0 0.0 T 2.0 8.3 29.2 3.0 13.0 11.7 0.0 0.0 67.2
1982-83 0.0 0.0 0.0 T 0.4 3.1 6.3 13.5 13.8 1.0 0.0 0.0 38.1
1983-84 0.0 0.0 0.0 0.0 0.3 13.3 9.6 1.2 8.2 0.5 T 0.0 33.1
1984-85 0.0 0.0 0.0 0.0 T 19.0 20.8 15.3 9.0 2.5 0.0 0.0 66.6
1985-86 0.0 0.0 0.0 0.0 3.5 13.5 10.4 14.0 0.7 0.3 0.0 0.0 42.4
1986-87 0.0 0.0 0.0 T 2.4 2.5 11.4 T 5.2 0.4 0.0 0.0 21.9
1987-88 0.0 0.0 0.0 0.6 0.4 19.9 10.2 20.7 2.9 T 0.0 0.0 54.7
1988-89 0.0 0.0 0.0 T 2.7 7.1 2.7 13.1 13.3 0.4 0.6 0.0 39.9
1989-90 T T 0.0 6.3 11.6 7.4 19.9 17.9 0.2 1.2 3.2 0.0 67.7
1990-91 T 0.0 0.0 0.0 0.4 10.5 15.2 2.4 1.1 0.4 0.0 0.0 30.0
1991-92 0.0 0.0 T T 4.8 14.7 4.3 5.3 11.1 0.8 0.0 T 41.0
1992-93 0.0 0.0 0.0 1.2 0.4 8.4 12.2 11.6 12.7 3.4 T 0.0 49.9
1993-94 0.0 0.0 T T 8.0 1.2 27.0 38.7 3.9 3.1 T 0.0 81.9
1994-95 0.0 0.0 0.0 0.0 0.2 10.4 15.2 2.1 7.6 0.2 0.0 0.0 35.7
1995-96 0.0 0.0 0.0 T 14.9 6.2 22.7 0.6 2.9 4.2 0.0 0.0 51.5
1996-97 0.0 0.0 0.0 0.0 1.8 9.2 23.6 10.7 0.5 5.4 0.0 T 51.2
1997-98 0.0 T 0.0 T 1.1 10.6 23.7 0.5 3.7 T 0.0 0.0 39.6
1998-99 0.0 0.0 0.0 0.0 0.3 3.4 39.0 4.4 13.6 0.0 0.0 T 60.7
1999-00 0.0 0.0 0.0 0.0 0.0 2.3 15.2 12.1 1.0 7.0 T 0.0 37.6
2000-01 0.0 0.0 0.0 0.2 2.8 49.5 1.3 4.2 0.8 0.5 T 0.0 59.3
2001- 0.0 0.0 0.0 T 0.0 2.6
POR=55 YRS T T T 0.2 2.9 10.7 13.5 9.4 8.0 1.9 0.1 T 46.7



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