Houston, TX Weather
Houston hourly forecast: next 24 hours
Today's high of 94°F (34°C) is about 7°F (4°C) above the typical September high of 87°F (31°C).
Current conditions in detail
Houston weather tomorrow (Thursday, September 17)
Tomorrow in Houston looks overcast, with a high of 90° and an overnight low of 80°. There is a 71% chance of rain - plan accordingly. Winds top out near 12 mph, and the UV index reaches 7 (high).
Houston 14-day forecast
About the weather in Houston
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.
Houston weather: quick facts
- 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%
Temperatures through the year
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.
Rain, sun and snow
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.
Season by season
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.
Average temperatures in Houston by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 62° | 45° | 11 | 5.7 in | 7.0 h/day | 73% |
| February | 67° | 49° | 12 | 3.8 in | 6.8 h/day | 77% |
| March | 73° | 57° | 14 | 5.4 in | 7.6 h/day | 77% |
| April | 78° | 62° | 14 | 6.8 in | 8.8 h/day | 77% |
| May | 84° | 69° | 17 | 8.8 in | 9.6 h/day | 80% |
| June | 89° | 74° | 16 | 7.2 in | 11.0 h/day | 79% |
| July | 91° | 76° | 16 | 7.2 in | 11.0 h/day | 79% |
| August | 92° | 77° | 17 | 7.2 in | 10.9 h/day | 77% |
| September | 87° | 73° | 14 | 7.3 in | 9.8 h/day | 78% |
| October | 81° | 64° | 10 | 5.5 in | 9.2 h/day | 73% |
| November | 71° | 55° | 10 | 4.5 in | 7.5 h/day | 76% |
| December | 67° | 51° | 12 | 6.1 in | 6.7 h/day | 77% |