WeatherArchive / Climate averages / Houston
Houston climate: average weather by month
Houston averages 70°F (21°C) over the year. August is warmest, with highs around 92°F (33°C); January is coldest, with lows near 46°F (8°C). About 54 inches (1372 mm) of precipitation falls on roughly 132 days a year, from 30 years of ERA5 data (1996–2025).
| Month | Avg high | Avg low | Precip. | Days ≥1 mm | Sunshine / day |
|---|---|---|---|---|---|
| January | 16.9°C | 7.5°C | 114.1 mm | 10.0 | 7.0 h |
| February | 18.8°C | 9.4°C | 87.2 mm | 9.4 | 7.2 h |
| March | 22.2°C | 12.8°C | 101.7 mm | 10.7 | 8.2 h |
| April | 25.7°C | 16.3°C | 106.1 mm | 9.5 | 9.7 h |
| May | 29.4°C | 20.6°C | 124.6 mm | 10.7 | 10.8 h |
| June | 32.0°C | 23.7°C | 127.6 mm | 13.5 | 11.5 h |
| July | 32.9°C | 24.5°C | 126.0 mm | 14.6 | 11.4 h |
| August | 33.5°C | 24.8°C | 111.4 mm | 13.9 | 11.4 h |
| September | 31.0°C | 22.3°C | 137.9 mm | 12.0 | 10.1 h |
| October | 27.1°C | 17.6°C | 114.6 mm | 8.9 | 9.3 h |
| November | 21.8°C | 12.6°C | 103.2 mm | 8.8 | 7.8 h |
| December | 18.1°C | 9.0°C | 118.0 mm | 10.1 | 6.8 h |
Record high 1996–2025: 41.7°C on 2000-09-04. Record low: -10.9°C on 2021-02-16.
Source: Open-Meteo Historical Weather API (CC BY 4.0). Values are ERA5 reanalysis model data on a ~9–25 km grid, not readings from a weather station, so a single town’s thermometer can differ by a few degrees and local showers can be missed. Grid cell 29.77, -95.33 at 20 m. For snowfall, humidity and a best-time-to-visit score, open Houston in the climate tool.