Houston weather in December
December in Houston: nice, rainy, with clean air — an excellent time to visit.
#5 of 12 months in Houston · #148 of 604 destinations to visit in December · comfort 81/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Houston climate normals — December
| Daytime high | 20°C / 68°F | 😎 nice |
|---|---|---|
| Nighttime low | 11°C / 52°F | |
| Feels like (high) | 19°C / 66°F | |
| Rainfall | 82 mm / 3.2 in | 🌧 rainy |
| Rainy days | 9 days | |
| Humidity | 74% | 💧 humid |
| Dew point | 9°C / 48°F | |
| Sunshine | 7.4 h/day | |
| Daylight | 10.3 h | |
| Wind | 18 km/h / 11 mph | |
| Air quality (US AQI) | 40 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Houston in December — FAQ
- Is December a good time to visit Houston?
- December in Houston: nice, rainy, with clean air — an excellent time to visit. It ranks #5 of 12 months for Houston on SeasonMap's comfort score (81/100).
- What is the weather like in Houston in December?
- In December, Houston averages a daily high of 19.8°C and a low of 10.9°C, with about 81.8 mm of rain over roughly 9 rainy days.
- What is the air quality in Houston in December?
- Houston has a mean US Air Quality Index of about 40 in December.