Houston, TX
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Houston Weather |
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Click for Houston Weather Forecasts:
TEMPERATURE: Houston averages 19.7 days per year with low temperatures of 32°F or less (0.7 dates per year with high temperatures of 32°F or less) and 96.0 days with high temperatures of 90°F or more; temperatures rarely reach 100F. Houston's growing season averages 300 days; the normal frostfree period extends from Feb. 14 to Dec. 11. Normal daily maximum: winter 66°F, summer 91°F, spring and autumn 79°F. Normal daily minimum: winter 44°F, summer 71°F, spring and autumn 57°F. Record extremes: 108°F in 1909, 5°F in 1930. Based on departure from 65°F, Houston averages 1,599 heating degree days and 2,700 cooling degree days per year.
PRECIPITATION: Annual average: 46.07. Precipitation of 0.01 or more occurs, on average, 105.8 dates per year; thunderstorms, 63.9 dates per year; fog limiting visibility to mile or less, 29.5 dates per year. Record monthly extremes: 16.28 in Jun. 1989, 0.05 in Oct. 1978. Highest daily total: 10.80 in Nov. 1943. Houston has had 15 measurable snowfalls since 1939.
Annual average relative humidity: midnight 86%, 6 a.m. 90%, noon 60%, 6 p.m. 65%.
SUNSHINE: Houston averages 58% of possible sunshine annually, ranging from 43% in January to 68% in July. Related annual averages:
"Clear" 91.0 days, concentrated in October and November
"Partly cloudy" 114.5 days, typical of June-September
"Cloudy" 159.7 days, common in December-May
WIND: Prevailing wind in Houston is south-southeasterly at a mean speed of 7.9 mph.
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