Climate averages 1991–2020
Baytown 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 Baytown: daytime highs average 17.6°C and nights cool to about 9.0°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 110 mm of rain on roughly 10 days, which makes December a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 16 min on an average December day.
The nearest other city in this atlas is Pasadena (Texas), United States (23 km away). In December its highs average 17.7°C, about as warm as Baytown, with 105 mm of rain.
Among the 498 cities listed in the United States, Baytown ranks joint 79th of 498 for the warmest December highs and joint 430th of 498 for the driest December (rainfall, lowest first). The mean December high of those 498 cities is 10.5°C; Baytown is 7.0°C warmer than that mean.
From December to January, average highs fall by 0.9°C to 16.6°C, and monthly rainfall falls from 110 mm to 109 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
Baytown climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 16.6°C7.8°C | 7.8°C | 109 | 10.0 | 10.510 h |
| February | 18.5°C9.7°C | 9.7°C | 87 | 9.0 | 11.111 h |
| March | 21.6°C12.9°C | 12.9°C | 99 | 9.6 | 12.012 h |
| April | 25.0°C16.3°C | 16.3°C | 98 | 8.9 | 12.913 h |
| May | 28.6°C20.7°C | 20.7°C | 96 | 10.4 | 13.614 h |
| June | 31.2°C23.8°C | 23.8°C | 120 | 14.2 | 14.014 h |
| July | 32.2°C24.6°C | 24.6°C | 99 | 13.9 | 13.914 h |
| August | 32.6°C24.6°C | 24.6°C | 113 | 14.5 | 13.213 h |
| September | 30.3°C22.2°C | 22.2°C | 129 | 12.5 | 12.412 h |
| October | 26.4°C17.6°C | 17.6°C | 109 | 8.9 | 11.511 h |
| November | 21.2°C12.4°C | 12.4°C | 109 | 8.7 | 10.711 h |
| December, selected | 17.6°C9.0°C | 9.0°C | 110 | 10.0 | 10.310 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
- Pasadena (Texas), United States in DecemberUnited States · 23 kmHigh 17.7°C · Low 9.0°C · 105 mm rain
- League City in DecemberUnited States · 28 kmHigh 17.6°C · Low 9.9°C · 104 mm rain
- Pearland in DecemberUnited States · 35 kmHigh 17.9°C · Low 9.2°C · 101 mm rain
- Houston in DecemberUnited States · 37 kmHigh 17.6°C · Low 8.6°C · 105 mm rain
- Missouri City in DecemberUnited States · 56 kmHigh 17.9°C · Low 9.1°C · 98 mm rain
- Sugar Land in DecemberUnited States · 65 kmHigh 17.9°C · Low 9.0°C · 95 mm rain
- The Woodlands in DecemberUnited States · 68 kmHigh 17.0°C · Low 8.1°C · 106 mm rain
- Cypress in DecemberUnited States · 74 kmHigh 17.2°C · Low 8.3°C · 102 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 Baytown) is explained once on the Baytown year overview and on the Sources, method and limits page.