Houston, TX Climate & Monthly Averages
Houston has a humid subtropical climate. August is the hottest month, averaging 92° by day; January is the coldest at 62°.
Sunshine is a defining feature of Houston's climate
Houston is genuinely wet: 75.3 inches (1914 mm) falls in an average year, across 165 days that carry about 11.6 mm each when they come. Temperatures are the calmer variable, running 62°F (17°C) to 92°F (33°C) between January and August.
How sun, temperature and rain fit together
January sits at the other end of the year: 62°F (17°C) by day, 45°F (7°C) at night. At its warmest, in August, Houston runs to 92°F (33°C) in the afternoon and back to 77°F (25°C) by dawn. Three of the twelve months pair mild highs with fewer than twelve wet days; the longest unbroken run is November through December.
Snowfall is rare but not unheard of. Sunshine averages 8.8 hours a day over the year, peaking in June at 11.0 hours. The gridded 2015-2024 daily record for this location tops out at 107°F (42°C) and bottoms at 12°F (-11°C) - decade extremes, not all-time station records.
More climate facts for Houston
- Hottest month: August - highs near 92°F (33°C)
- Coldest month: January - highs near 62°F (17°C)
- Decade extremes (2015-2024): 107°F (42°C) high · 12°F (-11°C) low
- Wettest month: May (17 rainy days) · Sunniest: June (11.0 h sun/day)
- Climate type: humid subtropical
- Annual swing: 17°C between the average warmest and coolest month · day to night: 9°C
- Months averaging 30°C or hotter: 4
- Average humidity: 77%
The most comfortable sunny-weather window
Best time to visit Houston
October to February is the sweet spot for Houston - warm days, manageable rainfall and plenty of daylight line up. Expect 70°F (21°C) in the afternoon and around 11 days of rain in a typical month of it. For the same question asked the other way round, see where else is warm in October.
What to pack
Pack for Houston with lightweight, breathable clothing and serious sun protection, proper waterproofs rather than an umbrella - wet days are the norm here and moisture-wicking fabrics for the humidity. Note the gap between afternoon and night: August pairs 92°F (33°C) with 77°F (25°C).
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Daylight | Wet-day chance | Humidity |
|---|---|---|---|---|---|---|---|---|
| January | 62° | 45° | 11 | 5.7 in | 7.0 h/day | 10.4 h | 36% | 73% |
| February | 67° | 49° | 12 | 3.8 in | 6.8 h/day | 11.1 h | 41% | 77% |
| March | 73° | 57° | 14 | 5.4 in | 7.6 h/day | 11.9 h | 47% | 77% |
| April | 78° | 62° | 14 | 6.8 in | 8.8 h/day | 12.9 h | 48% | 77% |
| May | 84° | 69° | 17 | 8.8 in | 9.6 h/day | 13.6 h | 54% | 80% |
| June | 89° | 74° | 16 | 7.2 in | 11.0 h/day | 14.0 h | 55% | 79% |
| July | 91° | 76° | 16 | 7.2 in | 11.0 h/day | 13.9 h | 53% | 79% |
| August | 92° | 77° | 17 | 7.2 in | 10.9 h/day | 13.2 h | 55% | 77% |
| September | 87° | 73° | 14 | 7.3 in | 9.8 h/day | 12.3 h | 48% | 78% |
| October | 81° | 64° | 10 | 5.5 in | 9.2 h/day | 11.4 h | 33% | 73% |
| November | 71° | 55° | 10 | 4.5 in | 7.5 h/day | 10.6 h | 35% | 76% |
| December | 67° | 51° | 12 | 6.1 in | 6.7 h/day | 10.2 h | 37% | 77% |
Houston month by month
Each card shows the average high and low. The bar places that month between Houston's coldest night and warmest afternoon.
January
- Rain
- 11 days
- Sunshine
- 7.0 h
- Daylight
- 10.4 h
February
- Rain
- 12 days
- Sunshine
- 6.8 h
- Daylight
- 11.1 h
March
- Rain
- 14 days
- Sunshine
- 7.6 h
- Daylight
- 11.9 h
April
- Rain
- 14 days
- Sunshine
- 8.8 h
- Daylight
- 12.9 h
May
- Rain
- 17 days
- Sunshine
- 9.6 h
- Daylight
- 13.6 h
June
- Rain
- 16 days
- Sunshine
- 11.0 h
- Daylight
- 14.0 h
July
- Rain
- 16 days
- Sunshine
- 11.0 h
- Daylight
- 13.9 h
August
- Rain
- 17 days
- Sunshine
- 10.9 h
- Daylight
- 13.2 h
September
- Rain
- 14 days
- Sunshine
- 9.8 h
- Daylight
- 12.3 h
October
- Rain
- 10 days
- Sunshine
- 9.2 h
- Daylight
- 11.4 h
November
- Rain
- 10 days
- Sunshine
- 7.5 h
- Daylight
- 10.6 h
December
- Rain
- 12 days
- Sunshine
- 6.7 h
- Daylight
- 10.2 h
Looking for warmer alternatives? Browse warm places by month, or compare Houston's coolest part of the year: January, December, February.
Seasonal weather under Houston's sunnier skies
Spring (March through May)
Spring is mild and warm here - highs near 78°F (26°C), nights near 62°F (17°C), and rain falls on around 46 of the 90 days.
Summer (June through August)
Summer in Houston runs hot, with daytime highs averaging 90°F (32°C) and nights around 76°F (24°C); rain falls on around 50 of the 90 days. Daylight is generous - around 11.0 hours of sun a day. With the moisture factored in, afternoons feel hotter than the reading suggests - the humidity and dew point converter shows why.
Fall (September through November)
Fall settles into easy warmth here - highs near 80°F (27°C), nights near 64°F (18°C), and rain falls on around 35 of the 90 days.
Winter (December through February)
Winter is mild here - highs near 65°F (18°C), nights near 48°F (9°C), and rain falls on around 34 of the 90 days.
How unusual is Houston?
- Annual precipitation is 75.3 inches (1914 mm) - wetter than 91% of the 3496 cities we track.
These comparisons use the same ten-year window for every city in the dataset.
Houston temperature extremes in the 2015–2024 dataset
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need another precipitation unit? Use the rainfall converter.