2001 HOUSTON, TEXAS (IAH)



Houston, the largest city in Texas, is located in the flat Coastal Plains, about 50 miles from the Gulf of Mexico and about 25 miles from Galveston Bay. The climate is predominantly marine. The terrain includes numerous small streams and bayous which, together with the nearness to Galveston Bay, favor the development of both ground and advective fogs. Prevailing winds are from the southeast and south, except in January, when frequent passages of high pressure areas bring invasions of polar air and prevailing northerly winds.

Temperatures are moderated by the influence of winds from the Gulf, which result in mild winters. Another effect of the nearness of the Gulf is abundant rainfall, except for rare extended dry periods. Polar air penetrates the area frequently enough to provide variability in the weather.

Records of sky cover for daylight hours indicate about one–fourth of the days per year as clear, with a high number of clear days in October and November. Cloudy days are relatively frequent from December to May and partly cloudy days are the more frequent for June through September. Sunshine averages nearly 60 percent of the possible amount for the year ranging from 42 percent in January to 67 percent in June.

Heavy fog occurs on an average of 16 days a year and light fog occurs about 62 days a year in the city. The frequency of heavy fog is considerably higher at William P. Hobby Airport and at Intercontinental Airport.

Destructive windstorms are fairly infrequent, but both thundersqualls and tropical storms occasionally pass through the area.

NORMALS, MEANS, AND EXTREMES

HOUSTON, TX (IAH)

LATITUDE:    LONGITUDE:     ELEVATION (FT):    TIME ZONE:    WBAN: 12960

29 59′ 33″ N  95 21′ 50″ W  GRND: 118  BARO: 121  CENTRAL (UTC + 6)

2001 Houston, Texas (IAH)

ELEMENT POR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC YEAR
TEMPERATURE F NORMAL DAILY MAXIMUM 30 61.0 65.3 71.1 78.4 84.6 90.1 92.7 92.5 88.4 81.6 72.4 64.7 78.6
MEAN DAILY MAXIMUM 32 61.8 66.3 72.7 79.1 85.4 90.8 93.9 93.6 88.9 81.4 71.6 64.7 79.2
HIGHEST DAILY MAXIMUM 32 84 91 91 95 99 103 104 107 109 96 89 85 109
YEAR OF OCCURRENCE 1975 1986 1989 1987 1996 1980 1980 2000 2000 1991 1989 1995 SEP 2000
MEAN OF EXTREME MAXS. 32 78.3 81.5 85.4 88.5 92.7 96.7 98.6 99.3 96.6 91.0 85.0 80.2 89.5
NORMAL DAILY MINIMUM 30 39.7 42.6 50.0 58.1 64.4 70.6 72.4 72.0 67.9 57.6 49.6 42.2 57.3
MEAN DAILY MINIMUM 32 41.2 44.7 50.9 57.9 65.6 71.3 73.2 72.8 68.4 58.6 49.7 43.4 58.1
LOWEST DAILY MINIMUM 32 12 20 22 31 44 52 62 60 48 29 19 7 7
YEAR OF OCCURRENCE 1982 1997 1980 1987 1978 1970 1990 1992 1975 1993 1976 1989 DEC 1989
MEAN OF EXTREME MINS. 32 24.8 27.4 32.8 39.8 52.1 62.4 68.2 67.6 54.1 41.9 32.0 26.5 44.1
NORMAL DRY BULB 30 50.4 53.9 60.6 68.3 74.5 80.4 82.6 82.3 78.2 69.6 61.0 53.5 67.9
MEAN DRY BULB 32 51.6 55.4 61.7 68.4 75.4 81.0 83.6 83.2 78.6 70.0 60.6 54.1 68.6
MEAN WET BULB 18 48.1 51.7 56.4 62.6 70.0 74.5 75.7 75.6 71.4 64.2 56.3 47.1 62.8
MEAN DEW POINT 18 43.0 46.8 51.5 58.2 66.7 71.5 72.7 72.3 67.9 60.4 52.3 43.0 58.9
NORMAL NO. DAYS WITH:
MAXIMUM 90 30 0.0 * 0.1 1.0 5.1 19.4 26.5 26.0 14.7 2.7 0.0 0.0 95.5
MAXIMUM 32 30 0.1 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 0.6
MINIMUM 32 30 7.8 4.8 1.4 0.1 0.0 0.0 0.0 0.0 0.0 * 1.6 5.6 21.3
MINIMUM 0 30 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
H/C NORMAL HEATING DEG. DAYS 30 468 322 187 36 0 0 0 0 0 31 181 374 1599
NORMAL COOLING DEG. DAYS 30 16 11 50 135 295 462 546 536 396 174 61 18 2700
RH NORMAL (PERCENT) 30 75 73 73 73 75 75 74 75 77 75 76 76 75
HOUR 00 LST 30 82 83 83 85 87 87 87 88 89 88 86 84 86
HOUR 06 LST 30 85 86 87 89 91 92 93 93 93 91 89 86 90
HOUR 12 LST 30 63 61 59 58 59 59 58 58 60 56 59 62 59
HOUR 18 LST 30 67 61 60 60 63 62 62 63 67 68 72 70 65
S PERCENT POSSIBLE SUNSHINE 27 45 50 54 58 62 68 70 68 66 64 52 51 59
W/O MEAN NO. DAYS WITH:
HEAVY FOG (VISBY 1/4 MI) 32 4.5 3.5 2.9 2.4 1.7 0.7 0.2 0.3 1.2 2.7 3.5 4.0 27.6
THUNDERSTORMS 32 2.3 2.3 3.6 3.9 7.0 8.8 9.9 10.2 7.2 3.7 3.0 1.9 63.8
CLOUDINESS MEAN:
SUNRISE-SUNSET (OKTAS) 27 5.5 5.3 5.4 5.3 5.2 4.6 4.4 4.4 4.2 4.0 4.6 5.3 4.8
MIDNIGHT-MIDNIGHT (OKTAS) 26 5.3 5.0 5.1 5.0 4.9 3.9 3.8 3.7 3.6 3.5 4.3 5.0 4.4
MEAN NO. DAYS WITH:
CLEAR 27 7.2 7.0 7.0 7.2 5.6 7.3 6.9 6.1 8.6 11.2 9.0 7.2 90.3
PARTLY CLOUDY 27 5.4 5.6 6.4 7.1 11.0 13.3 15.9 16.9 11.5 8.9 7.0 5.5 114.5
CLOUDY 27 18.4 15.6 17.6 15.7 14.3 9.3 8.2 8.0 10.0 10.9 14.0 18.3 160.3
PR MEAN STATION PRESSURE(IN) 29 30.00 29.99 29.90 29.90 29.80 29.80 29.90 29.90 29.89 29.90 30.00 30.00 29.91
MEAN SEA-LEVEL PRES. (IN) 17 30.13 30.08 30.02 29.97 29.93 29.94 30.00 29.98 29.97 30.04 30.09 30.14 30.02
WINDS MEAN SPEED (MPH) 29 8.1 8.5 9.1 9.0 8.1 7.6 6.8 6.1 6.6 7.1 7.7 7.7 7.7
PREVAIL. DIR (TENS OF DEGS) 29 36 36 13 13 16 16 18 16 13 13 36 36 13
MAXIMUM 2-MINUTE:
SPEED (MPH) 5 28 40 33 37 36 38 36 31 36 28 30 32 40
DIR. (TENS OF DEGS) 09 10 11 11 02 08 34 09 12 31 15 32 10
YEAR OF OCCURRENCE 2000 2000 2001 1997 1999 2001 1998 1998 2000 1998 1997 2000 FEB 2000
MAXIMUM 5-SECOND:
SPEED (MPH) 5 37 44 39 43 47 66 49 44 48 47 43 41 66
DIR. (TENS OF DEGS) 33 10 32 09 35 15 33 23 10 13 31 33 15
YEAR OF OCCURRENCE 1998 2000 2001 1997 1997 2000 1998 1997 2000 1998 2000 2000 JUN 2000
PRECIPITATION NORMAL (IN) 30 3.29 2.96 2.92 3.21 5.24 4.96 3.60 3.49 4.89 4.27 3.79 3.45 46.07
MAXIMUM MONTHLY (IN) 32 9.78 5.99 8.52 10.92 14.39 19.21 8.10 10.58 11.35 16.05 10.21 9.34 19.21
YEAR OF OCCURRENCE 1991 1992 1972 1976 1970 2001 1979 1996 1976 1984 1998 1991 JUN 2001
MINIMUM MONTHLY (IN) 32 0.36 0.38 0.12 0.43 0.04 0.26 0.47 0.31 0.80 0.05 0.41 0.64 0.04
YEAR OF OCCURRENCE 1971 1976 1996 1983 1998 1970 1993 1990 1975 1978 1988 1973 MAY 1998
MAXIMUM IN 24 HOURS (IN) 32 2.73 2.22 7.47 8.16 10.36 11.02 3.99 6.83 7.98 9.31 6.33 4.14 11.02
YEAR OF OCCURRENCE 1995 1985 1972 1976 1989 2001 1973 1981 1976 1984 1998 1995 JUN 2001
NORMAL NO. DAYS WITH:
PRECIPITATION 0.01 30 10.2 8.4 9.3 6.9 8.0 8.5 9.2 8.9 9.4 7.4 8.3 8.9 103.4
PRECIPITATION 1.00 30 0.9 0.8 0.8 1.0 1.9 1.6 1.1 1.0 1.3 1.5 1.0 0.9 13.8
SNOWFALL NORMAL (IN) 30 0.2 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 T 0.1 0.5
MAXIMUM MONTHLY (IN) 32 2.0 2.8 T T T T 0.0 0.0 0.0 0.0 T 1.7 2.8
YEAR OF OCCURRENCE 1973 1973 1992 1993 1993 1996 1979 1989 FEB 1973
MAXIMUM IN 24 HOURS (IN) 32 2.0 1.4 T T T T 0.0 0.0 0.0 0.0 T 1.7 2.0
YEAR OF OCCURRENCE 1973 1980 1992 1993 1993 1996 1979 1989 JAN 1973
MAXIMUM SNOW DEPTH (IN) 31 1 1 0 0 0 0 0 0 0 0 0 0 1
YEAR OF OCCURRENCE 1973 1973 FEB 1973
NORMAL NO. DAYS WITH:
SNOWFALL 1.0 30 0.1 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.* 0.2

2001 Houston, Texas (IAH)

PRECIPITATION (inches) 2001 HOUSTON, TX (IAH)
YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
1972 3.30 1.20 8.52 2.85 6.99 3.02 2.76 3.90 6.23 3.34 6.49 2.20 50.80
1973 5.00 3.40 3.68 7.15 4.22 13.46 6.77 3.73 9.38 9.31 1.59 2.47 70.16
1974 7.68 0.55 4.20 1.68 5.61 0.59 1.75 6.94 4.51 4.53 7.90 3.35 49.29
1975 1.97 2.63 3.19 4.80 7.57 7.50 5.48 5.72 0.80 5.62 2.08 3.61 50.97
1976 1.39 0.38 1.53 10.92 5.80 2.63 3.93 1.59 11.35 5.83 3.05 6.22 54.62
1977 2.67 1.70 1.95 4.34 0.79 3.55 2.69 4.45 3.92 0.82 5.17 2.89 34.94
1978 7.15 3.07 1.70 0.57 4.15 9.37 2.35 3.66 4.27 0.05 5.99 2.60 44.93
1979 6.30 5.23 2.88 7.79 3.78 1.88 8.10 4.57 9.83 2.80 1.78 4.03 58.97
1980 6.09 2.54 5.39 2.05 5.63 0.92 1.57 1.40 6.00 4.03 2.12 1.25 38.99
1981 2.32 2.21 1.74 2.69 8.75 9.65 4.43 7.01 2.91 6.96 5.26 2.05 55.98
1982 1.82 1.59 1.55 2.28 6.87 1.10 4.32 1.90 0.98 6.64 8.91 4.91 42.87
1983 2.00 3.97 3.85 0.43 7.29 5.37 5.23 9.42 7.23 1.56 3.17 3.69 53.21
1984 3.99 4.37 2.41 0.56 3.13 1.99 3.43 3.52 3.87 16.05 2.28 2.59 48.19
1985 2.10 5.38 4.52 4.31 1.57 5.29 4.93 1.14 4.67 6.54 4.84 3.85 49.14
1986 0.71 2.74 1.44 2.63 4.29 6.34 0.61 3.27 3.70 6.83 6.66 5.71 44.93
1987 2.42 4.26 0.88 0.47 5.39 9.31 4.79 1.48 3.46 0.17 3.41 4.56 40.60
1988 1.27 1.29 4.88 1.26 1.32 2.00 3.23 3.52 1.20 1.29 0.41 1.26 22.93
1989 4.80 0.90 3.96 1.48 13.56 16.28 1.92 2.74 2.69 1.76 1.84 0.80 52.73
1990 3.96 4.54 5.11 6.21 2.23 2.98 4.85 0.31 1.57 3.79 3.01 1.81 40.37
1991 9.78 5.79 1.77 8.06 4.02 7.69 1.31 2.97 2.76 2.57 5.03 9.34 61.09
1992 7.70 5.99 6.28 3.74 7.05 3.38 3.85 2.78 1.08 1.03 5.99 3.46 52.33
1993 5.79 2.67 6.41 7.88 8.50 12.08 0.47 1.82 1.10 5.32 3.27 2.68 57.99
1994 2.08 2.79 2.39 2.11 5.02 3.40 1.60 5.45 1.12 10.62 1.67 4.90 43.15
1995 5.95 2.55 4.11 2.59 3.83 4.11 2.68 4.90 2.52 2.77 3.63 4.99 44.63
1996 0.88 1.29 0.12 2.05 0.56 8.37 1.11 10.58 6.96 2.60 4.55 3.74 42.81
1997 3.26 5.35 7.96 7.17 6.69 4.46 2.30 2.26 4.86 7.11 3.38 5.42 60.22
1998 4.35 5.85 2.32 1.21 0.04 2.87 1.65 4.38 10.16 7.79 10.21 4.01 54.84
1999 2.12 0.80 3.44 1.06 4.10 5.26 5.11 0.50 1.36 0.56 1.53 2.20 28.04
2000 1.25 2.32 1.35 5.52 12.35 3.29 0.64 2.11 4.34 3.27 8.50 2.69 47.63
2001 4.25 0.82 7.97 2.00 3.53 19.21 2.05 4.83 8.82 8.95 2.58 6.18 71.19
POR=67 YRS 3.70 3.11 2.97 3.42 4.88 5.00 3.77 3.94 4.46 4.11 4.01 4.02 47.39

2001 Houston, Texas (IAH)

AVERAGE TEMPERATURE (F) 2001 HOUSTON, TX (IAH)
YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
1972 56.5 55.2 64.3 71.2 73.7 80.8 80.3 80.3 79.6 69.8 54.7 52.0 68.2
1973 47.4 51.4 63.7 64.6 72.8 79.2 83.0 79.5 78.1 71.8 67.3 53.5 67.7
1974 55.0 56.2 66.8 67.2 76.9 79.9 82.8 81.6 74.6 70.6 60.2 54.6 68.9
1975 56.9 55.4 61.1 68.3 75.9 80.0 81.5 81.1 74.9 69.5 59.7 52.7 68.1
1976 50.6 60.1 62.2 67.7 70.5 78.4 80.5 81.4 76.2 60.6 51.8 49.2 65.8
1977 42.7 53.8 60.9 66.9 74.5 81.0 82.4 83.1 80.0 69.2 61.8 53.7 67.5
1978 40.8 45.1 57.3 67.6 76.0 80.4 83.7 83.1 79.3 68.9 64.7 52.9 66.7
1979 44.1 51.7 62.4 68.7 73.1 79.8 82.6 81.5 75.6 70.7 55.7 52.4 66.5
1980 55.0 53.7 60.9 66.2 77.3 85.1 87.5 86.6 83.2 67.8 58.0 55.2 69.7
1981 51.4 55.4 60.9 74.3 75.3 82.7 84.4 84.4 78.6 72.3 64.4 54.5 69.9
1982 52.9 52.1 64.9 67.8 75.3 83.0 85.4 84.1 79.3 69.5 60.9 55.4 69.2
1983 50.1 52.5 58.3 64.0 73.4 79.0 82.2 82.6 76.6 70.1 63.1 45.7 66.5
1984 47.0 54.0 61.9 67.8 74.9 78.6 81.8 82.9 77.4 74.2 60.0 63.4 68.7
1985 45.7 49.6 64.7 70.0 75.6 81.0 81.6 84.2 79.8 72.5 67.0 51.0 68.6
1986 54.4 59.9 63.3 71.7 75.8 82.0 85.9 82.6 81.8 68.9 62.0 51.7 70.0
1987 51.4 56.1 58.9 67.2 77.1 81.3 83.5 86.2 78.9 68.7 60.5 55.6 68.8
1988 48.1 54.1 61.3 67.6 73.6 80.5 84.4 85.3 80.8 72.0 65.7 55.4 69.1
1989 57.5 52.7 61.3 69.4 77.8 79.9 82.4 81.7 77.0 70.2 62.9 44.4 68.1
1990 57.0 59.1 62.9 69.4 78.1 84.8 82.1 85.1 80.1 68.7 63.4 53.6 70.4
1991 50.4 57.4 63.5 72.2 78.0 82.0 84.0 83.0 77.4 72.3 56.7 56.2 69.4
1992 51.0 58.5 64.0 68.7 73.7 81.7 83.6 80.1 79.3 71.4 56.8 56.7 68.8
1993 53.6 56.7 61.1 65.9 73.4 81.6 85.8 86.5 80.2 69.5 56.9 54.6 68.8
1994 52.6 55.2 62.7 69.6 76.0 83.5 85.5 83.1 78.3 71.9 65.7 57.2 70.1
1995 54.3 58.7 62.9 68.6 77.9 80.6 84.8 84.9 81.6 70.4 61.4 57.1 70.3
1996 52.0 58.7 58.1 69.4 81.4 80.7 83.8 82.0 77.5 70.6 62.0 57.4 69.5
1997 50.8 55.3 65.3 64.2 73.6 79.2 83.1 83.2 79.1 68.9 55.7 50.1 67.4
1998 57.1 55.1 60.1 65.9 78.7 85.5 86.6 84.7 82.2 72.6 64.3 55.1 70.7
1999 57.1 61.5 63.7 73.0 76.6 81.9 83.1 86.8 78.0 69.0 62.2 53.7 70.6
2000 56.5 61.7 66.4 67.9 78.1 81.4 85.2 84.8 79.4 70.9 57.6 47.6 69.8
2001 49.3 59.3 56.4 71.7 75.9 80.5 83.6 83.5 77.0 66.9 63.4 56.0 68.6
POR=32 YRS 51.5 55.3 61.9 68.5 75.4 81.0 83.5 83.3 78.6 70.0 60.6 54.1 68.6

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 Houston, Texas (IAH)

HEATING DEGREE DAYS (base 65 F) 2001 HOUSTON, TX (IAH)
YEAR JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN TOTAL
1972-73 0 0 2 50 320 410 540 379 75 117 5 0 1898
1973-74 0 0 0 8 74 364 330 273 95 60 0 0 1204
1974-75 0 0 0 15 196 336 290 270 179 48 0 0 1334
1975-76 0 0 0 26 217 399 441 178 155 26 7 0 1449
1976-77 0 0 0 173 398 484 687 312 166 25 0 0 2245
1977-78 0 0 0 34 150 365 752 553 250 33 17 0 2154
1978-79 0 0 0 22 111 393 646 376 135 23 2 0 1708
1979-80 0 0 0 27 297 389 308 350 169 45 0 0 1585
1980-81 0 0 0 67 255 323 416 291 144 6 1 0 1503
1981-82 0 0 0 50 82 326 409 363 143 79 1 0 1453
1982-83 0 0 0 53 175 328 457 346 219 96 0 0 1674
1983-84 0 0 6 27 138 606 549 325 150 45 2 0 1848
1984-85 0 0 6 12 204 144 591 432 91 22 0 0 1502
1985-86 0 0 5 17 76 434 326 209 99 11 0 0 1177
1986-87 0 0 0 28 175 411 421 245 196 82 0 0 1558
1987-88 0 0 0 16 185 301 525 331 171 35 0 0 1564
1988-89 0 0 0 5 120 309 260 379 210 56 0 0 1339
1989-90 0 0 0 47 160 637 264 177 122 34 0 0 1441
1990-91 0 0 0 61 129 395 448 222 115 8 0 0 1378
1991-92 0 0 0 15 289 303 428 197 95 37 4 0 1368
1992-93 0 0 0 1 270 268 351 235 157 62 0 0 1344
1993-94 0 0 0 76 269 343 391 291 136 40 1 0 1547
1994-95 0 0 0 21 75 268 347 192 155 28 0 0 1086
1995-96 0 0 4 8 145 303 408 267 259 54 0 0 1448
1996-97 0 0 1 29 159 280 458 287 77 70 0 0 1361
1997-98 0 0 0 58 282 454 254 276 212 57 0 0 1593
1998-99 0 0 0 8 92 349 276 153 106 25 0 0 1009
1999-00 0 0 0 51 114 355 298 152 72 50 0 0 1092
2000-01 0 0 5 51 267 532 480 207 262 19 0 0 1823
2001- 0 0 0 57 111 311

2001 Houston, Texas (IAH)

COOLING DEGREE DAYS (base 65 F) 2001 HOUSTON, TX (IAH)
YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
1972 58 20 71 208 275 480 480 482 447 206 17 12 2756
1973 1 4 41 111 253 434 564 458 401 225 151 12 2655
1974 24 33 158 132 374 454 558 519 295 196 60 18 2821
1975 47 8 61 155 342 455 514 505 303 174 68 24 2656
1976 5 43 75 110 182 408 490 520 341 42 9 0 2225
1977 0 5 44 91 302 487 547 565 456 173 58 23 2751
1978 10 5 19 120 369 471 584 568 437 150 108 25 2866
1979 7 13 62 142 261 454 552 519 324 211 26 6 2577
1980 4 31 49 86 388 610 705 677 553 162 52 26 3343
1981 1 28 23 295 330 538 606 609 413 285 71 7 3206
1982 39 11 147 170 329 547 641 599 437 199 60 40 3219
1983 0 0 18 76 268 427 541 554 362 196 87 18 2547
1984 0 13 64 135 315 415 527 562 384 302 62 100 2879
1985 0 6 87 180 335 487 521 602 456 257 143 9 3083
1986 4 71 52 220 341 518 654 553 510 157 92 4 3176
1987 4 4 14 154 383 497 580 661 423 137 54 15 2926
1988 7 20 65 121 274 472 609 637 478 229 144 20 3076
1989 33 44 105 194 405 454 547 526 363 218 105 5 2999
1990 20 19 65 174 413 603 536 630 456 181 87 47 3231
1991 0 14 76 231 408 514 593 565 376 248 47 37 3109
1992 0 17 74 155 281 508 584 476 437 210 32 20 2794
1993 4 10 42 92 267 506 652 674 463 221 31 27 2989
1994 15 25 74 186 347 561 644 569 406 243 102 33 3205
1995 24 22 98 142 406 476 622 622 508 183 42 65 3210
1996 15 89 53 192 513 475 587 532 384 205 78 51 3174
1997 23 21 94 52 274 432 567 570 426 187 9 0 2655
1998 16 6 64 90 429 621 678 616 524 250 75 50 3419
1999 37 60 73 270 365 515 568 685 395 182 35 11 3196
2000 41 64 126 143 413 495 632 622 443 242 51 0 3272
2001 2 51 3 230 344 474 585 581 370 123 70 40 2873

2001 Houston, Texas (IAH)

SNOWFALL (inches) 2001 HOUSTON, TX (IAH)
YEAR JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN TOTAL
1972-73 0.0 0.0 0.0 0.0 0.0 0.0 2.0 2.8 0.0 0.0 0.0 0.0 4.8
1973-74 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
1974-75 0.0 0.0 0.0 0.0 0.0 0.0 T 0.0 0.0 0.0 0.0 0.0 T
1975-76 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
1976-77 0.0 0.0 0.0 0.0 T 0.0 0.0 0.0 0.0 0.0 0.0 0.0 T
1977-78 0.0 0.0 0.0 0.0 0.0 0.0 0.4 0.0 0.0 0.0 0.0 0.0 0.4
1978-79 0.0 0.0 0.0 0.0 0.0 0.0 T 0.0 0.0 0.0 0.0 0.0 T
1979-80 0.0 0.0 0.0 0.0 T 0.0 0.0 1.4 0.0 0.0 0.0 0.0 1.4
1980-81 0.0 0.0 0.0 0.0 0.0 0.0 T T 0.0 0.0 0.0 0.0 T
1981-82 0.0 0.0 0.0 0.0 0.0 0.0 T 0.0 0.0 0.0 0.0 0.0 T
1982-83 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
1983-84 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
1984-85 0.0 0.0 0.0 0.0 0.0 0.0 1.4 0.3 0.0 0.0 0.0 0.0 1.7
1985-86 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
1986-87 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
1987-88 0.0 0.0 0.0 0.0 0.0 0.0 0.0 T 0.0 0.0 0.0 0.0 T
1988-89 0.0 0.0 0.0 0.0 0.0 0.0 0.0 T 0.0 0.0 0.0 0.0 T
1989-90 0.0 0.0 0.0 0.0 0.0 1.7 0.0 0.0 0.0 0.0 0.0 T 1.7
1990-91 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
1991-92 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 T 0.0 T 0.0 T
1992-93 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 T T 0.0 T
1993-94 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.1
1994-95 0.0 0.0 0.0 0.0 0.0 0.0 T 0.0 0.0 0.0 0.0 0.0 T
1995-96 0.0 0.0 0.0 0.0 0.0 0.0 0.0 T 0.0 0.0 0.0 T T
1996-97 0.0 0.0 0.0 0.0 0.0 T 0.0 0.0 0.0 0.0 0.0 0.0 T
1997-98 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
1998-99 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 T 0.0 0.0 0.0 T
1999-00 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 T 0.0 T
2000-01 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 T 0.0 0.0 0.0 T
2001- 0.0 0.0 0.0 0.0 0.0 0.0
POR=66 YRS 0.0 0.0 0.0 0.0 T 0.0 0.2 0.2 0.0 T T T 0.4



User Contributions:

Cornel
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Mar 25, 2012 @ 9:09 am
Great insight! That's the answer we've been lkoinog for.

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