Climateby Month

Houston, TX climate by month

NOAA 1991-2020 normals · 36 ft elevation · also covers Pasadena, Pearland

Summers in Houston are hot and oppressively humid; winters are cool. Highs peak at 94°F in August and fall to 64°F in January. Wet days are spread through the year, from about 7 to 10 a month. The most comfortable time to visit is March.

Warmest month
94°F
August normal high
Coldest month
46°F
January normal low
Wet days a year
107
55.6 in of precipitation
Muggy days a year
173
dew point 65°F or higher

How warm is Houston?

Normal highs range from 64°F in January to 94°F in August.

40°50°60°70°80°90°100° January: normal high 64°F (18°C), low 46°F (8°C) 64° 46° February: normal high 68°F (20°C), low 50°F (10°C) March: normal high 73°F (23°C), low 56°F (13°C) April: normal high 79°F (26°C), low 62°F (17°C) May: normal high 86°F (30°C), low 69°F (21°C) June: normal high 91°F (33°C), low 75°F (24°C) July: normal high 93°F (34°C), low 77°F (25°C) August: normal high 94°F (34°C), low 77°F (25°C) 94° 77° September: normal high 89°F (32°C), low 73°F (23°C) October: normal high 82°F (28°C), low 64°F (18°C) November: normal high 73°F (23°C), low 54°F (12°C) December: normal high 66°F (19°C), low 48°F (9°C) JFMAMJJASOND

Bars run from the normal low to the normal high for each month.

How rainy is Houston?

June has the most wet days (about 10); the year brings about 56 in of precipitation.

January: 10 wet days February: 9 wet days March: 8 wet days April: 8 wet days May: 8 wet days June: 10 wet days 10 July: 9 wet days August: 10 wet days September: 10 wet days October: 7 wet days 7 November: 8 wet days December: 10 wet days JFMAMJJASOND

Wet day: at least 0.01 in of rain or melted snow, counted from daily records 1991-2020.

How humid is Houston?

Muggy days peak in July, at about 31 days.

January: 1 muggy days 1 February: 2 muggy days March: 4 muggy days April: 10 muggy days May: 22 muggy days June: 29 muggy days July: 31 muggy days 31 August: 30 muggy days September: 24 muggy days October: 13 muggy days November: 5 muggy days December: 2 muggy days JFMAMJJASOND

Muggy day: daily mean dew point of 65°F or higher, from hourly observations 1991-2020 at G Bush Intercontinental Airport/Houston Airport, 15 mi N of the city center (the nearest airport with complete hourly records).

How much daylight?

Daylight ranges from about 10.3 hours in December to 14.0 hours in June.

January: 10.5 hours of daylight February: 11.2 hours of daylight March: 12.0 hours of daylight April: 12.9 hours of daylight May: 13.7 hours of daylight June: 14.0 hours of daylight 14.0 July: 13.8 hours of daylight August: 13.2 hours of daylight September: 12.3 hours of daylight October: 11.4 hours of daylight November: 10.7 hours of daylight December: 10.3 hours of daylight 10.3 JFMAMJJASOND
See all numbers
Monthly climate normals and day counts for Houston, 1991-2020
MonthHighLowPrecip.Wet daysSnowMuggy daysDaylight
January 64°F46°F 4.1 in10 0.0 in 1 10.5 h
February 68°F50°F 2.9 in9 0.0 in 2 11.2 h
March 73°F56°F 3.3 in8 0.0 in 4 12.0 h
April 79°F62°F 4.1 in8 0.0 in 10 12.9 h
May 86°F69°F 5.4 in8 0.0 in 22 13.7 h
June 91°F75°F 6.1 in10 0.0 in 29 14.0 h
July 93°F77°F 4.6 in9 0.0 in 31 13.8 h
August 94°F77°F 5.4 in10 0.0 in 30 13.2 h
September 89°F73°F 5.8 in10 0.0 in 24 12.3 h
October 82°F64°F 5.8 in7 0.0 in 13 11.4 h
November 73°F54°F 3.9 in8 0.0 in 5 10.7 h
December 66°F48°F 4.3 in10 0.1 in 2 10.3 h

High and low: NOAA 1991-2020 normal daily high and low. Wet days: at least 0.01 in of rain or melted snow. Muggy days: daily mean dew point 65°F or higher.

Best months to visit Houston

By our comfort score, the best month is March.

Comfort score by month (0-100) and its parts, in days per month
MonthScoreComfortableNotable rainHot or cold
Jan 581161
Feb 641350
Mar 681550
Apr 641040
May 50257
Jun 380721
Jul 350626
Aug 340626
Sep 381616
Oct 54753
Nov 641550
Dec 581160

Score = 40 × share of comfortable days + 25 × share of days without notable rain + 20 × share of days neither hot (90°F+) nor cold (high 40°F or below) + 15 × daylight. How the score works.

Frost dates in Houston

The last spring frost typically comes around Jan 30, and the first fall frost around Dec 28, leaving 330 frost-free days in a typical year.

Frost and freeze dates for Houston
Typical date1 year in 10
Last spring frost (32°F)Jan 30after Mar 1
First fall frost (32°F)Dec 28before Nov 27
Hard freeze (28°F)in about 47% of years; no typical date
Frost-free season330 daysunder 292 days

"Typical" is the date with a 50% chance of a later spring frost (or earlier fall frost). Planting after the "1 year in 10" spring date gives a 90% chance of no further frost. The Old Farmer's Almanac publishes 30% dates, which fall between our typical and 1-in-10 dates.

Station: Houston Hobby Airport (USW00012918), NOAA 1991-2020 freeze probabilities. Frost dates for every city in Texas.

Hottest and coldest readings, 1991-2020

The highest reading was 108°F (September 4, 2000); the lowest was 19°F (January 17, 2018).

From the temperature station's daily records with NOAA quality flags removed. Not an all-time record.

Near Houston

Similar climates elsewhere

Also covers

Pasadena and Pearland use the same temperature and rain stations as Houston, so their monthly numbers are the ones on this page.

Where the numbers come from

  • Temperature, rain and frost dates: Houston Hobby Airport (USW00012918), 9.9 mi SSE of the city center, 44 ft . NOAA normals and daily records, 1991-2020.
  • Snowfall, snow depth, humidity and wind by hour and cloud cover: Houston Intercont Airport (USW00012960), 15 mi N of the city center, 95 ft (59 ft higher than the city). NOAA normals and daily records, 1991-2020.
  • Daily humidity and wind: G Bush Intercontinental Airport/Houston Airport (722430-12960), 15 mi N of the city center, 90 ft (54 ft higher than the city). Hourly observations, 1991-2020.

Distances from the city center (USGS). Methodology · Report an error