Houston weather in December
In December, Houston has an average high of 18 °C64 °F and an average low of 6 °C43 °F, with about 96 mm3.8 in of precipitation. It is the 11th warmest month of the year and ranks 7th for precipitation.
How December compares with other months
Compared with November, December is 4.2 °C7.6 °F cooler on average. Compared with January, December is 1.4 °C2.5 °F warmer on average and wetter by 7 mm0.3 in. Daylight lasts about 10.2 hours around the middle of the month. Average relative humidity is 80% and the average cloud amount 59%.
Is December a good time to visit Houston?
December is not among the most comfortable months by our comfort score: it is cool (average high 18 °C64 °F) and it is fairly wet (96 mm3.8 in). The most comfortable months in Houston are February–April and November.
What to wear in December
For Houston in December, pack long sleeves, a sweater and a medium jacket, an extra layer for the cooler mornings and evenings and an umbrella or light rain jacket.
December in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Houston | 1864 | 643 | 963.8 |
| Pasadena | 1864 | 1049 | 1134.5 |
| Beaumont | 1763 | 745 | 1204.7 |
| College Station | 1661 | 541 | 833.3 |
| Austin | 1762 | 440 | 491.9 |
| Waco | 1560 | 338 | 652.6 |
| Killeen | 1660 | 338 | 461.8 |
| Tyler | 1457 | 337 | 1084.2 |
| Corpus Christi | 2169 | 1050 | 371.5 |
Nearby places that are more than 1 °C1.8 °F warmer in December: Pasadena and Corpus Christi; cooler: College Station, Austin, Waco and Killeen.
Other months in Houston
- January16 °C61 °F / 5 °C41 °F
- February19 °C65 °F / 7 °C45 °F
- March23 °C73 °F / 11 °C52 °F
- April26 °C80 °F / 15 °C59 °F
- May31 °C87 °F / 19 °C67 °F
- June34 °C92 °F / 23 °C73 °F
- July34 °C93 °F / 24 °C75 °F
- August35 °C94 °F / 24 °C75 °F
- September32 °C89 °F / 21 °C70 °F
- October28 °C82 °F / 16 °C60 °F
- November22 °C72 °F / 10 °C51 °F
- December18 °C64 °F / 6 °C43 °F
Frequently asked questions
How warm is Houston in December?
In December the average high in Houston is 18 °C (64 °F) and the average low is 6 °C (43 °F).
Does it rain a lot in Houston in December?
On average about 96 mm (3.8 in) of precipitation falls in December; it ranks 7th of the 12 months.
Is December the warmest month in Houston?
No. The warmest month in Houston is August, with an average high of 35 °C (94 °F). The coldest month is January, with an average low of 5 °C (41 °F).
How long is the day in Houston in December?
In the middle of December the day in Houston lasts about 10.2 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Houston in December?
The average relative humidity in December is about 80%. This is a long-term average for the whole day.
How cloudy is Houston in December?
On average about 59% of the sky is covered by cloud in December. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.