Climate averages 1991–2020
San Angelo weather
in December.
A mild, fairly dry month: the 11th warmest and the joint 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a mild month in San Angelo: daytime highs average 15.4°C and nights cool to about 4.2°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 33 mm of rain on roughly 5 days, which makes December a fairly dry month (the joint 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 09 min on an average December day.
The nearest other city in this atlas is Abilene (128 km away). In December its highs average 14.4°C, 1.1°C cooler than San Angelo, with 35 mm of rain.
Among the 498 cities listed in the United States, San Angelo ranks 140th of 498 for the warmest December highs and joint 55th of 498 for the driest December (rainfall, lowest first). The mean December high of those 498 cities is 10.5°C; San Angelo is 4.9°C warmer than that mean.
From December to January, average highs fall by 0.3°C to 15.1°C, and monthly rainfall falls from 33 mm to 27 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
San Angelo climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 15.1°C3.5°C | 3.5°C | 27 | 4.1 | 10.310 h |
| February | 17.7°C5.4°C | 5.4°C | 34 | 5.0 | 11.011 h |
| March | 21.9°C9.4°C | 9.4°C | 48 | 5.8 | 12.012 h |
| April | 26.4°C13.5°C | 13.5°C | 53 | 5.9 | 12.913 h |
| May | 30.0°C18.2°C | 18.2°C | 86 | 10.0 | 13.714 h |
| June | 33.2°C22.1°C | 22.1°C | 57 | 7.6 | 14.214 h |
| July | 34.7°C23.8°C | 23.8°C | 33 | 5.4 | 14.014 h |
| August | 34.3°C23.9°C | 23.9°C | 39 | 6.0 | 13.313 h |
| September | 30.6°C20.0°C | 20.0°C | 53 | 6.0 | 12.412 h |
| October | 25.8°C14.6°C | 14.6°C | 60 | 6.0 | 11.411 h |
| November | 19.4°C8.5°C | 8.5°C | 36 | 4.2 | 10.611 h |
| December, selected | 15.4°C4.2°C | 4.2°C | 33 | 4.7 | 10.110 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
- Abilene in DecemberUnited States · 128 kmHigh 14.4°C · Low 3.7°C · 35 mm rain
- Midland in DecemberUnited States · 166 kmHigh 14.5°C · Low 2.5°C · 24 mm rain
- Odessa in DecemberUnited States · 188 kmHigh 14.6°C · Low 2.4°C · 24 mm rain
- Ciudad Acuña in DecemberMexico · 243 kmHigh 18.3°C · Low 7.8°C · 22 mm rain
- Killeen in DecemberUnited States · 260 kmHigh 15.6°C · Low 5.9°C · 72 mm rain
- Lubbock in DecemberUnited States · 270 kmHigh 12.4°C · Low 0.5°C · 23 mm rain
- Round Rock in DecemberUnited States · 284 kmHigh 16.3°C · Low 6.8°C · 70 mm rain
- Austin in DecemberUnited States · 290 kmHigh 16.6°C · Low 6.9°C · 70 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 San Angelo) is explained once on the San Angelo year overview and on the Sources, method and limits page.