2001 ST. LOUIS, MISSOURI (STL)




St Louis is located at the confluence of the Missouri and Mississippi Rivers and near the geographical center of the United States. Its position in the middle latitudes allows the area to be affected by warm moist air that originates in the Gulf of Mexico, as well as cold air masses that originate in Canada. The alternate invasion of these airmasses produces a wide variety of weather conditions, and allows the region to enjoy a true four–season climate.

During the summer months, air originating from the Gulf of Mexico tends to dominate the area, producing warm and humid conditions. Since 1870, records indicate that temperatures of 90 degrees or higher occur on about 35–40 days per year. Extrmely hot days (100 degrees or more) are expected on no more than five days per year.

Winters are brisk and stimulating, but prolonged periods of extremely cold weather are rare. Records show that temperatures drop to zero or below an average of 2 or 3 days per year, and temperatures as cold as 32 degrees or lower occur less than 25 days in most years. Snowfall has averaged a little over 18 inches per winter season, and snowfall of an inch or less is received on 5 to 10 days in most years.

Normal annual precipitation for St. Louis is a little less than 34 inches. The three winter months are the driest, with an average total of about 6 inches of precipitation. The spring months of March through May are normally the wettest with normal total rainfall of just under 10.5 inches. It is not unusual to have extended dry periods of one to two weeks during growing season.

Thunderstorms normally occur on between 40 and 50 days per year. During any year, there are usually a few of these thunderstorms that are severe, and produce large hail and damaging winds. Tornadoes have produced extensive damage and loss of life in the St. Louis area.

NORMALS, MEANS, AND EXTREMES

ST. LOUIS, MO (STL)

LATITUDE:    LONGITUDE:     ELEVATION (FT):    TIME ZONE:    WBAN: 13994

38 45′ 09″ N  90 22′ 25″ W  GRND:  707  BARO: � A0;710  CENTRAL  (UTC + 6)

2001 St. Louis, Missouri (STL)

ELEMENT POR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC YEAR
TEMPERATURE F NORMAL DAILY MAXIMUM 30 37.7 42.6 54.6 66.9 76.1 85.2 89.3 87.3 79.9 68.5 54.7 41.7 65.4
MEAN DAILY MAXIMUM 56 38.6 44.1 54.0 66.8 76.1 85.1 88.9 87.4 80.1 69.1 54.3 42.7 65.6
HIGHEST DAILY MAXIMUM 44 76 85 89 93 94 102 107 107 104 94 85 76 107
YEAR OF OCCURRENCE 1970 1972 1985 1989 1996 1988 1980 1984 1984 1963 1989 1970 AUG 1984
MEAN OF EXTREME MAXS. 56 63.5 68.6 79.1 86.6 89.4 95.4 98.6 98.3 93.4 86.1 75.0 66.4 83.4
NORMAL DAILY MINIMUM 30 20.8 25.1 35.5 46.4 56.0 65.7 70.4 67.9 60.5 48.3 37.7 26.0 46.7
MEAN DAILY MINIMUM 56 21.6 25.9 34.4 45.9 55.7 65.2 69.4 67.6 59.4 47.9 36.3 26.3 46.3
LOWEST DAILY MINIMUM 44 -18 -12 -5 22 31 43 51 47 36 23 1 -16 -18
YEAR OF OCCURRENCE 1985 1996 1960 1975 1976 1969 1972 1986 1974 1976 1964 1989 JAN 1985
MEAN OF EXTREME MINS. 56 0.2 6.3 16.1 29.9 40.5 52.0 58.3 56.3 43.8 32.5 19.1 6.5 30.1
NORMAL DRY BULB 30 29.3 33.9 45.1 56.7 66.1 75.4 79.8 77.6 70.2 58.4 46.2 33.9 56.1
MEAN DRY BULB 56 30.1 35.0 44.2 56.3 65.9 75.2 79.2 77.6 69.8 58.5 45.1 34.5 56.0
MEAN WET BULB 17 28.5 32.9 40.2 49.9 59.6 67.6 71.4 70.2 62.3 52.2 41.5 31.9 50.7
MEAN DEW POINT 17 22.8 26.4 32.8 42.6 53.5 62.8 66.9 65.9 57.2 45.8 35.1 26.1 44.8
NORMAL NO. DAYS WITH:
MAXIMUM 90 30 0.0 0.0 0.0 0.4 1.3 8.0 15.1 11.6 4.4 0.2 0.0 0.0 41.0
MAXIMUM 32 30 11.4 7.0 1.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.6 7.0 27.3
MINIMUM 32 30 26.7 21.3 13.5 2.8 0.1 0.0 0.0 0.0 0.0 1.7 11.0 23.3 100.4
MINIMUM 0 30 2.3 0.5 * 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.1 3.9
H/C NORMAL HEATING DEG. DAYS 30 1107 871 617 266 111 0 0 0 21 237 564 964 4758
NORMAL COOLING DEG. DAYS 30 0 0 0 17 145 312 459 391 177 33 0 0 1534
RH NORMAL (PERCENT) 30 73 72 68 64 66 67 68 70 72 69 72 76 70
HOUR 00 LST 30 77 77 74 70 75 76 77 80 81 76 77 79 77
HOUR 06 LST 30 82 82 81 78 82 83 85 88 89 84 83 83 83
HOUR 12 LST 30 65 64 59 54 55 56 56 57 58 56 63 68 59
HOUR 18 LST 30 68 66 59 53 55 55 56 58 60 60 67 73 61
S PERCENT POSSIBLE SUNSHINE 37 50 52 54 56 59 66 69 64 63 60 46 43 57
W/O MEAN NO. DAYS WITH:
HEAVY FOG(VISBY 1/4 MI) 44 2.2 1.6 1.5 0.6 0.6 0.3 0.2 0.3 0.5 0.7 1.1 2.0 11.6
THUNDERSTORMS 44 0.8 0.8 3.0 5.8 6.7 7.4 7.2 6.5 3.6 2.5 1.7 0.6 46.6
CLOUDINESS MEAN:
SUNRISE-SUNSET (OKTAS) 48 5.4 5.3 5.4 5.2 5.1 4.8 4.4 4.2 4.1 4.0 4.9 5.3 4.8
MIDNIGHT-MIDNIGHT (OKTAS) 32 5.0 5.1 5.1 4.9 4.7 4.3 3.8 3.8 3.9 3.9 4.8 5.1 4.5
MEAN NO. DAYS WITH:
CLEAR 48 7.3 6.6 6.5 6.9 7.1 7.1 9.3 10.1 11.4 12.3 8.6 7.1 100.3
PARTLY CLOUDY 48 6.6 6.5 8.0 8.2 9.5 11.0 11.3 11.1 8.2 7.5 6.6 6.6 101.1
CLOUDY 48 17.1 15.1 16.5 14.9 14.4 11.9 10.4 9.8 10.4 11.2 14.9 17.3 163.9
PR MEAN STATION PRESSURE(IN) 29 29.53 29.50 29.40 29.37 29.35 29.37 29.39 29.42 29.45 29.46 29.47 29.51 29.43
MEAN SEA-LEVEL PRES. (IN) 17 30.14 30.12 30.04 29.95 29.95 29.94 29.98 30.01 30.03 30.07 30.08 30.16 30.04
WINDS MEAN SPEED (MPH) 51 10.5 10.7 11.6 11.3 9.4 8.7 7.9 7.4 8.1 8.7 10.2 10.3 9.6
PREVAIL. DIR (TENS OF DEGS) 32 30 30 30 30 18 18 18 18 18 18 30 30 30
MAXIMUM 2-MINUTE:
SPEED (MPH) 5 36 39 37 44 41 43 37 39 33 43 41 38 44
DIR. (TENS OF DEGS) 31 23 26 25 29 27 30 27 32 31 24 31 25
YEAR OF OCCURRENCE 1997 1999 1998 1997 2000 2001 2001 2000 2000 2001 1998 1998 APR 1997
MAXIMUM 5-SECOND:
SPEED (MPH) 5 43 54 52 59 51 51 48 48 40 51 53 47 59
DIR. (TENS OF DEGS) 35 23 30 27 27 26 34 27 34 30 24 30 27
YEAR OF OCCURRENCE 2000 1999 2001 1998 2000 2001 1999 2000 2000 2001 1998 2000 APR 1998
PRECIPITATION NORMAL (IN) 30 1.81 2.12 3.58 3.50 3.97 3.72 3.85 2.85 3.12 2.68 3.28 3.03 37.51
MAXIMUM MONTHLY (IN) 44 5.38 4.68 6.67 10.32 12.92 9.43 10.71 6.44 9.16 7.12 9.95 7.82 12.92
YEAR OF OCCURRENCE 1975 1986 1978 1994 1995 1985 1981 1970 1993 1984 1985 1982 MAY 1995
MINIMUM MONTHLY (IN) 44 0.10 0.25 1.09 0.99 1.02 0.44 0.60 0.08 T 0.21 0.44 0.32 T
YEAR OF OCCURRENCE 1986 1963 1966 1977 1972 1991 1970 1971 1979 1975 1969 1958 SEP 1979
MAXIMUM IN 24 HOURS (IN) 44 2.43 2.60 2.95 4.91 6.55 3.59 3.47 3.17 3.50 2.70 3.71 4.03 6.55
YEAR OF OCCURRENCE 1975 1999 1977 1979 1995 2000 1982 1993 1986 1986 1985 1982 MAY 1995
NORMAL NO. DAYS WITH:
PRECIPITATION 0.01 30 8.4 8.4 11.4 11.2 10.5 9.5 8.5 7.9 7.9 8.4 9.5 9.7 111.3
PRECIPITATION 1.00 30 0.3 0.4 0.6 0.6 1.1 1.1 1.2 0.8 0.8 0.6 0.9 0.8 9.2
SNOWFALL NORMAL (IN) 30 6.5 5.3 3.7 0.6 0.0 0.0 0.0 0.0 0.0 T 1.5 4.6 22.2
MAXIMUM MONTHLY (IN) 65 23.9 20.8 22.3 6.5 0.6 T T 0.0 0.0 T 11.3 26.3 26.3
YEAR OF OCCURRENCE 1977 1993 1960 1971 1993 1993 1997 1993 1951 1973 DEC 1973
MAXIMUM IN 24 HOURS (IN) 65 13.9 11.7 10.7 6.1 0.6 T T 0.0 0.0 T 10.3 12.0 13.9
YEAR OF OCCURRENCE 1982 1993 1989 1971 1993 1993 1997 1993 1951 1973 JAN 1982
MAXIMUM SNOW DEPTH (IN) 53 13 20 17 6 0 0 0 0 0 0 10 12 20
YEAR OF OCCURRENCE 1978 1982 1978 1971 1951 1973 FEB 1982
NORMAL NO. DAYS WITH:
SNOWFALL 1.0 30 1.9 1.5 0.8 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.4 1.4 6.2

2001 St. Louis, Missouri (STL)

PRECIPITATION (inches) 2001 ST. LOUIS, MO (STL)
YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
1972 0.77 0.74 2.93 4.49 1.02 1.19 3.10 2.69 6.21 1.47 5.59 3.54 33.74
1973 1.40 1.04 5.81 4.25 3.92 4.23 2.85 2.46 3.52 2.33 3.65 4.36 39.82
1974 3.51 4.17 2.58 2.40 5.90 3.45 0.90 5.05 2.50 1.51 3.15 1.71 36.83
1975 5.38 3.59 4.08 4.56 3.23 3.78 2.56 5.44 2.48 0.21 2.62 2.28 40.21
1976 0.83 1.08 4.28 1.37 3.90 2.32 2.28 1.27 0.90 3.37 0.73 1.13 23.46
1977 2.38 2.47 6.28 0.99 2.13 5.47 4.28 5.34 3.64 3.76 4.33 2.34 43.41
1978 1.70 1.60 6.67 3.21 3.69 2.39 6.03 0.76 3.10 2.28 4.47 1.81 37.71
1979 1.95 1.48 3.63 7.47 1.62 1.67 3.67 2.26 T 1.81 2.07 1.85 29.48
1980 0.63 1.54 3.98 1.54 3.40 2.19 3.56 2.72 3.12 2.89 1.25 0.66 27.48
1981 0.64 2.18 2.97 3.40 6.79 5.82 10.71 3.31 1.17 3.81 2.71 2.01 45.52
1982 4.90 1.37 2.88 2.55 4.85 5.96 7.91 5.27 5.27 2.30 3.89 7.82 54.97
1983 0.72 0.95 3.54 7.30 6.32 4.32 1.23 2.24 1.24 5.40 7.79 3.75 44.80
1984 0.84 3.43 5.37 6.29 5.19 2.74 0.76 0.64 8.88 7.12 5.50 4.89 51.65
1985 0.53 3.77 5.18 3.60 3.30 9.43 5.23 3.66 0.43 1.96 9.95 3.69 50.73
1986 0.10 4.68 1.22 1.23 2.42 4.43 2.61 2.22 7.99 5.34 1.58 1.06 34.88
1987 1.98 1.40 2.16 1.74 2.00 3.59 5.04 5.56 1.62 1.74 4.09 7.46 38.38
1988 3.30 2.27 4.73 1.15 1.44 1.97 3.02 2.31 1.99 1.86 6.65 3.24 33.93
1989 2.58 1.43 4.53 2.10 4.11 2.34 4.59 3.00 1.69 0.95 0.59 0.69 28.60
1990 1.42 3.53 2.66 3.07 9.59 3.02 3.34 2.84 0.78 4.96 3.36 6.52 45.09
1991 1.52 0.98 3.20 3.27 3.87 0.44 5.18 0.98 2.98 5.70 3.26 2.10 33.48
1992 1.12 1.89 3.45 2.46 1.45 1.19 4.31 3.45 2.98 1.21 6.32 3.66 33.49
1993 3.54 2.75 3.31 6.16 3.94 7.12 5.06 4.78 9.16 2.61 4.85 1.48 54.76
1994 2.09 1.51 1.27 10.32 1.72 2.16 1.42 3.76 1.18 2.85 4.90 1.52 34.70
1995 4.39 1.33 3.19 3.33 12.92 2.96 2.16 4.52 0.74 2.01 1.28 2.85 41.68
1996 3.27 0.52 3.06 7.97 4.34 3.72 6.33 1.57 2.86 2.67 6.50 0.86 43.67
1997 2.74 4.14 2.85 2.66 3.05 2.00 1.44 3.36 2.73 2.05 2.36 1.85 31.23
1998 2.88 2.93 6.00 4.63 3.62 6.90 6.39 2.35 1.86 2.51 2.72 0.83 43.62
1999 5.10 3.52 2.40 3.72 2.20 5.26 4.22 1.95 1.09 2.04 0.72 1.84 34.06
2000 1.23 3.11 1.88 1.84 5.84 8.22 2.25 3.64 2.62 2.60 2.79 1.35 37.37
2001 1.12 2.48 1.45 3.01 2.81 3.60 4.00 1.99 2.81 5.50 3.06 3.46 35.29
POR=131 YRS 2.20 2.31 3.32 3.75 4.13 4.06 3.44 2.89 3.07 2.71 2.82 2.29 36.99

2001 St. Louis, Missouri (STL)

AVERAGE TEMPERATURE (F) 2001 ST. LOUIS, MO (STL)
YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
1972 29.9 34.3 45.0 56.1 66.4 73.4 77.5 76.3 71.1 54.8 39.8 30.4 54.6
1973 32.6 34.5 50.9 53.7 61.7 74.6 78.7 76.9 70.0 60.7 47.0 30.0 55.9
1974 29.8 36.1 48.1 57.5 65.0 69.5 79.8 74.5 62.3 57.8 44.0 34.0 54.9
1975 33.2 32.0 39.0 53.4 67.6 74.9 77.8 77.9 64.7 59.0 48.3 35.5 55.3
1976 28.1 43.5 48.8 56.5 60.8 72.7 79.5 74.3 68.2 50.9 37.0 28.5 54.1
1977 15.1 34.8 49.6 60.8 71.1 74.7 81.2 76.4 70.7 55.5 44.7 30.6 55.4
1978 19.6 21.1 37.9 56.2 63.6 74.4 78.5 76.4 73.1 55.6 47.5 35.0 53.2
1979 16.6 23.1 44.1 52.9 65.5 76.5 79.2 78.4 70.8 59.2 44.5 38.7 54.1
1980 31.4 27.9 41.0 54.5 66.9 75.5 85.0 83.5 72.5 55.9 46.4 36.6 56.4
1981 31.2 36.8 46.7 63.1 60.7 75.7 78.7 76.1 69.2 55.7 48.7 31.1 56.1
1982 22.5 28.6 45.3 51.5 70.7 70.6 79.3 75.2 68.0 58.3 46.3 41.6 54.8
1983 32.3 38.1 44.5 50.3 62.3 75.3 83.5 84.2 72.0 59.7 48.2 20.5 55.9
1984 28.3 40.4 37.1 54.1 63.2 79.5 78.3 80.7 68.2 61.8 44.3 40.7 56.4
1985 22.6 30.5 49.5 60.4 67.6 71.6 79.3 74.7 70.9 61.4 46.5 27.3 55.2
1986 34.9 34.5 49.2 60.8 68.2 78.3 82.8 74.0 73.3 58.3 41.5 35.4 57.6
1987 30.6 40.1 48.6 56.9 72.6 77.9 81.0 78.9 70.5 53.8 49.1 38.0 58.2
1988 29.2 30.5 45.2 57.1 69.0 77.7 81.6 82.7 72.5 53.9 47.2 37.2 57.0
1989 41.2 28.2 45.0 57.7 64.3 74.8 79.3 77.8 67.4 61.3 47.1 24.1 55.7
1990 42.9 41.3 49.8 55.7 63.6 77.2 80.2 77.9 74.1 58.1 52.7 34.7 59.0
1991 29.3 41.7 50.1 61.5 73.0 79.9 80.9 79.7 72.4 60.5 42.4 39.2 59.2
1992 37.0 42.7 48.5 57.8 65.1 73.8 79.0 73.4 69.2 59.4 44.3 35.7 57.2
1993 32.1 31.7 41.5 54.2 66.4 75.1 81.9 80.4 66.4 56.1 43.9 37.2 55.6
1994 26.8 35.0 47.7 57.7 65.0 79.0 79.5 76.6 70.2 61.5 52.1 41.5 57.7
1995 31.1 36.4 49.0 56.8 64.7 75.6 81.3 83.9 68.0 60.9 42.7 33.8 57.0
1996 29.4 37.4 41.0 54.6 68.6 74.6 75.8 77.6 67.2 58.1 39.0 35.5 54.9
1997 26.7 38.1 47.6 50.9 61.7 73.6 80.2 76.0 70.2 59.1 42.0 35.1 55.1
1998 36.4 42.6 43.2 55.3 71.2 75.5 78.9 79.1 75.0 60.2 49.5 37.2 58.7
1999 31.3 42.5 42.8 58.6 66.8 74.9 82.9 76.5 69.7 58.8 52.6 38.3 58.0
2000 33.0 42.9 49.1 55.2 69.0 72.9 77.6 80.4 69.6 61.3 41.3 21.6 56.2
2001 30.5 35.1 41.5 63.1 68.7 74.1 80.7 79.6 68.8 57.7 53.1 39.9 57.7
POR=128 YRS 31.2 35.0 44.5 56.2 66.0 75.2 79.5 77.6 70.1 58.8 45.5 35.0 56.2

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 St. Louis, Missouri (STL)

HEATING DEGREE DAYS (base 65 F) 2001 ST. LOUIS, MO (STL)
YEAR JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN TOTAL
1972-73 2 0 29 317 751 1069 997 849 430 348 121 0 4913
1973-74 0 0 31 182 538 1077 1083 804 539 253 101 21 4629
1974-75 0 0 127 242 625 954 979 919 803 353 48 1 5051
1975-76 2 0 110 228 498 910 1137 619 505 288 158 0 4455
1976-77 0 0 24 456 832 1125 1541 839 471 190 36 3 5517
1977-78 0 0 11 291 601 1059 1401 1223 840 275 158 5 5864
1978-79 0 0 24 292 528 923 1496 1167 644 364 80 0 5518
1979-80 0 0 16 223 610 810 1035 1071 740 331 54 0 4890
1980-81 0 0 30 305 553 877 1039 784 569 127 168 0 4452
1981-82 0 0 35 298 483 1048 1308 1015 603 407 9 11 5217
1982-83 0 0 49 261 569 721 1008 745 632 437 117 7 4546
1983-84 0 0 58 192 498 1376 1133 705 860 342 115 0 5279
1984-85 0 0 103 151 616 746 1308 960 487 200 42 10 4623
1985-86 0 0 64 145 550 1159 929 850 506 194 44 0 4441
1986-87 0 11 12 221 699 910 1062 691 501 267 10 0 4384
1987-88 0 0 12 346 490 830 1102 995 610 241 17 3 4646
1988-89 0 0 5 354 528 854 730 1029 625 293 128 4 4550
1989-90 0 0 73 183 536 1261 679 657 496 327 85 9 4306
1990-91 3 0 24 250 375 934 1101 648 474 154 21 0 3984
1991-92 0 0 67 191 674 796 859 642 509 264 95 5 4102
1992-93 0 3 46 204 615 902 1014 927 726 327 52 13 4829
1993-94 0 0 58 292 628 852 1179 833 531 261 84 1 4719
1994-95 0 0 33 155 388 722 1045 794 488 260 88 0 3973
1995-96 0 0 65 167 664 961 1096 797 735 322 67 14 4888
1996-97 0 0 57 235 776 908 1180 746 530 418 142 5 4997
1997-98 0 0 13 271 684 922 880 621 689 293 19 24 4416
1998-99 0 0 1 175 460 859 1038 626 679 214 41 7 4100
1999-00 0 0 41 226 370 826 985 638 490 297 36 8 3917
2000-01 0 0 57 176 709 1338 1063 831 721 154 47 13 5109
2001- 0 0 50 246 352 772

2001 St. Louis, Missouri (STL)

COOLING DEGREE DAYS (base 65 F) 2001 ST. LOUIS, MO (STL)
YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
1972 0 0 5 35 129 268 394 358 219 9 0 0 1417
1973 0 0 1 17 25 294 435 375 187 57 4 0 1395
1974 0 0 24 36 109 164 463 300 52 25 2 0 1175
1975 0 0 2 12 133 308 405 406 110 51 4 0 1431
1976 0 0 8 38 34 239 458 298 129 25 0 0 1229
1977 0 0 2 69 231 302 509 360 190 4 0 0 1667
1978 0 0 7 17 120 295 426 360 276 10 8 0 1519
1979 0 0 2 9 102 354 446 420 195 50 0 0 1578
1980 0 0 0 23 120 320 626 580 262 31 2 0 1964
1981 0 0 7 77 42 327 431 353 166 13 1 0 1417
1982 0 0 0 7 191 186 453 322 146 63 15 4 1387
1983 0 0 3 3 41 322 578 603 274 36 2 0 1862
1984 0 0 0 24 67 442 423 493 202 57 2 1 1711
1985 0 0 14 70 128 214 451 310 245 43 2 0 1477
1986 0 0 25 75 150 407 561 298 267 21 0 0 1804
1987 0 0 0 32 251 393 501 439 183 5 20 0 1824
1988 0 0 4 10 144 389 521 556 238 16 0 0 1878
1989 0 0 11 80 111 305 450 403 151 75 6 0 1592
1990 0 0 30 55 47 382 480 408 304 41 12 0 1759
1991 0 0 19 56 277 452 498 463 295 58 3 0 2121
1992 0 0 7 54 104 277 440 268 182 36 0 0 1368
1993 0 0 1 9 102 320 529 483 107 23 0 0 1574
1994 0 0 4 48 90 428 453 365 194 53 7 0 1642
1995 0 0 0 22 85 322 510 595 164 47 0 0 1745
1996 0 5 0 16 188 309 342 402 132 25 0 0 1419
1997 0 0 1 1 44 268 477 349 173 99 0 0 1412
1998 0 0 21 7 217 347 439 446 305 33 2 3 1820
1999 0 0 0 28 104 309 563 364 190 37 5 0 1600
2000 0 5 6 8 167 251 398 483 202 69 5 0 1594
2001 0 0 0 106 166 293 492 457 167 29 2 1 1713

2001 St. Louis, Missouri (STL)

SNOWFALL (inches) 2001 ST. LOUIS, MO (STL)
YEAR JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN TOTAL
1972-73 0.0 0.0 0.0 0.0 5.2 1.0 2.2 3.0 0.2 0.2 0.0 0.0 11.8
1973-74 0.0 0.0 0.0 0.0 0.0 26.3 4.2 4.5 7.4 0.0 0.0 0.0 42.4
1974-75 0.0 0.0 0.0 0.0 1.2 1.5 4.1 12.1 6.3 T 0.0 0.0 25.2
1975-76 0.0 0.0 0.0 0.0 7.6 3.9 4.5 4.5 4.8 0.0 0.0 0.0 25.3
1976-77 0.0 0.0 0.0 0.0 0.3 5.2 23.9 6.7 0.1 0.1 0.0 0.0 36.3
1977-78 0.0 0.0 0.0 0.0 6.7 11.7 22.9 9.3 15.4 0.0 0.0 0.0 66.0
1978-79 0.0 0.0 0.0 0.0 0.0 1.4 18.4 4.8 2.0 0.0 0.0 0.0 26.6
1979-80 0.0 0.0 0.0 0.0 0.3 T 4.2 7.4 8.7 5.0 0.0 0.0 25.6
1980-81 0.0 0.0 0.0 0.0 8.0 1.1 0.6 8.2 0.2 0.0 0.0 0.0 18.1
1981-82 0.0 0.0 0.0 0.0 T 7.9 16.6 9.0 0.4 2.7 0.0 0.0 36.6
1982-83 0.0 0.0 0.0 0.0 T T 3.3 0.3 1.4 2.4 0.0 0.0 7.4
1983-84 0.0 0.0 0.0 0.0 T 6.5 2.3 9.9 5.2 0.0 0.0 0.0 23.9
1984-85 0.0 0.0 0.0 0.0 1.7 1.8 5.1 1.3 T 0.0 0.0 0.0 9.9
1985-86 0.0 0.0 0.0 0.0 T 5.7 1.0 6.1 0.2 T 0.0 0.0 13.0
1986-87 0.0 0.0 0.0 0.0 T T 23.6 0.6 T 0.0 0.0 0.0 24.2
1987-88 0.0 0.0 0.0 0.0 T 7.3 1.4 6.7 2.8 0.0 0.0 0.0 18.2
1988-89 0.0 0.0 0.0 0.0 2.9 5.9 0.1 3.9 11.0 0.0 0.0 0.0 23.8
1989-90 0.0 0.0 0.0 T T 9.1 0.2 6.9 8.4 T T T 24.6
1990-91 0.0 0.0 0.0 0.0 T 13.2 1.9 T 1.7 0.0 0.0 0.0 16.8
1991-92 0.0 0.0 0.0 T 3.9 0.4 3.8 2.3 3.1 0.0 0.0 0.0 13.5
1992-93 0.0 0.0 0.0 0.0 T 0.7 5.5 20.8 3.0 0.3 0.6 T 30.9
1993-94 0.0 0.0 0.0 T 1.6 1.1 5.0 1.0 0.2 1.4 0.0 0.0 10.3
1994-95 0.0 0.0 0.0 0.0 0.0 0.1 3.5 1.6 0.5 T 0.0 0.0 5.7
1995-96 0.0 0.0 0.0 0.0 0.9 7.9 13.4 2.8 1.0 T 0.0 0.0 26.0
1996-97 T 0.0 0.0 T 1.5 13.1 0.8 T 4.2 0.0 0.0
1997-98 T 0.0 0.0 0.0 2.6 4.1 5.7 0.5 5.9 T 0.2 0.0 19.0
1998-99 0.0 0.0 0.0 0.0 0.0 1.8 12.0 1.5 0.5 T 0.0 0.0 15.8
1999-00 0.0 0.0 0.0 0.0 0.0 0.3 5.0 T 4.8 T 0.0 0.0 10.1
2000-01 0.0 0.0 0.0 0.0 0.0 15.9 0.7 1.6 T 0.4 0.0 0.0 18.6
2001- 0.0 0.0 0.0 T 0.2 T
POR=64 YRS 0.0 0.0 0.0 T 1.4 3.8 5.4 4.1 3.7 0.5 T T 18.9



User Contributions:

Amir
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Nov 2, 2012 @ 3:03 am
Check that off the list of tighns I was confused about.

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