Climate averages 1991–2020
Bryan weather
in December.
A mild, wet month: the 11th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a mild month in Bryan: daytime highs average 16.3°C and nights cool to about 6.9°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 95 mm of rain on roughly 9 days, which makes December a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 12 min on an average December day.
The nearest other city in this atlas is College Station (6 km away). In December its highs average 16.4°C, about as warm as Bryan, with 95 mm of rain.
Among the 498 cities listed in the United States, Bryan ranks joint 128th of 498 for the warmest December highs and joint 354th of 498 for the driest December (rainfall, lowest first). The mean December high of those 498 cities is 10.5°C; Bryan is 5.7°C warmer than that mean.
From December to January, average highs fall by 0.9°C to 15.4°C, and monthly rainfall falls from 95 mm to 87 mm.
The annual picture
December in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Bryan climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 15.4°C5.7°C | 5.7°C | 87 | 8.3 | 10.410 h |
| February | 17.5°C7.6°C | 7.6°C | 77 | 8.9 | 11.111 h |
| March | 21.1°C11.0°C | 11.0°C | 90 | 9.0 | 12.012 h |
| April | 25.1°C14.7°C | 14.7°C | 101 | 8.5 | 12.913 h |
| May | 29.0°C19.3°C | 19.3°C | 106 | 10.0 | 13.714 h |
| June | 32.1°C22.9°C | 22.9°C | 85 | 9.9 | 14.114 h |
| July | 34.2°C24.4°C | 24.4°C | 48 | 7.0 | 13.914 h |
| August | 34.7°C24.7°C | 24.7°C | 63 | 7.1 | 13.313 h |
| September | 31.4°C21.8°C | 21.8°C | 76 | 7.5 | 12.412 h |
| October | 26.5°C16.4°C | 16.4°C | 102 | 7.7 | 11.411 h |
| November | 20.4°C10.7°C | 10.7°C | 85 | 7.9 | 10.611 h |
| December, selected | 16.3°C6.9°C | 6.9°C | 95 | 8.7 | 10.210 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
December in nearby cities
- College Station in DecemberUnited States · 6 kmHigh 16.4°C · Low 7.0°C · 95 mm rain
- Cypress in DecemberUnited States · 102 kmHigh 17.2°C · Low 8.3°C · 102 mm rain
- The Woodlands in DecemberUnited States · 102 kmHigh 17.0°C · Low 8.1°C · 106 mm rain
- Temple in DecemberUnited States · 104 kmHigh 15.6°C · Low 6.0°C · 82 mm rain
- Waco in DecemberUnited States · 122 kmHigh 15.5°C · Low 6.0°C · 83 mm rain
- Round Rock in DecemberUnited States · 127 kmHigh 16.3°C · Low 6.8°C · 70 mm rain
- Sugar Land in DecemberUnited States · 137 kmHigh 17.9°C · Low 9.0°C · 95 mm rain
- Killeen in DecemberUnited States · 139 kmHigh 15.6°C · Low 5.9°C · 72 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Bryan) is explained once on the Bryan year overview and on the Sources, method and limits page.
College Station lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.