Climate averages 1991–2020
San Angelo weather
in September.
A hot, moderately wet month: the 4th warmest and the joint 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in San Angelo: daytime highs average 30.6°C and nights cool to about 20.0°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 53 mm of rain on roughly 6 days, which makes September a moderately wet month (the joint 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 23 min on an average September day.
The nearest other city in this atlas is Abilene (128 km away). In September its highs average 30.2°C, about as warm as San Angelo, with 58 mm of rain.
Among the 498 cities listed in the United States, San Angelo ranks joint 87th of 498 for the warmest September highs and 175th of 498 for the driest September (rainfall, lowest first). The mean September high of those 498 cities is 26.9°C; San Angelo is 3.7°C warmer than that mean.
From September to October, average highs fall by 4.7°C to 25.8°C, and monthly rainfall rises from 53 mm to 60 mm.
The annual picture
September 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, selected | 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 | 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
September in nearby cities
- Abilene in SeptemberUnited States · 128 kmHigh 30.2°C · Low 20.1°C · 58 mm rain
- Midland in SeptemberUnited States · 166 kmHigh 29.5°C · Low 18.6°C · 46 mm rain
- Odessa in SeptemberUnited States · 188 kmHigh 29.6°C · Low 18.5°C · 45 mm rain
- Ciudad Acuña in SeptemberMexico · 243 kmHigh 32.3°C · Low 22.8°C · 65 mm rain
- Killeen in SeptemberUnited States · 260 kmHigh 30.8°C · Low 21.3°C · 69 mm rain
- Lubbock in SeptemberUnited States · 270 kmHigh 28.2°C · Low 17.2°C · 52 mm rain
- Round Rock in SeptemberUnited States · 284 kmHigh 31.1°C · Low 21.5°C · 74 mm rain
- Austin in SeptemberUnited States · 290 kmHigh 31.3°C · Low 21.8°C · 75 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.