Climate averages 1991–2020
Beaumont weather
in September.
A hot, wet month: the 4th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Beaumont: daytime highs average 30.2°C and nights cool to about 22.0°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 136 mm of rain on roughly 12 days, which makes September a wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 22 min on an average September day.
The nearest other city in this atlas is Lake Charles (87 km away). In September its highs average 30.3°C, about as warm as Beaumont, with 121 mm of rain.
Among the 498 cities listed in the United States, Beaumont ranks joint 113th of 498 for the warmest September highs and 466th of 498 for the driest September (rainfall, lowest first). The mean September high of those 498 cities is 26.9°C; Beaumont is 3.3°C warmer than that mean.
From September to October, average highs fall by 4.0°C to 26.2°C, and monthly rainfall falls from 136 mm to 104 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
Beaumont climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 16.1°C7.4°C | 7.4°C | 119 | 9.8 | 10.410 h |
| February | 18.1°C9.2°C | 9.2°C | 86 | 8.7 | 11.111 h |
| March | 21.2°C12.4°C | 12.4°C | 99 | 9.5 | 12.012 h |
| April | 24.7°C15.9°C | 15.9°C | 112 | 9.4 | 12.913 h |
| May | 28.4°C20.3°C | 20.3°C | 97 | 10.7 | 13.614 h |
| June | 31.0°C23.5°C | 23.5°C | 133 | 15.1 | 14.014 h |
| July | 32.0°C24.5°C | 24.5°C | 107 | 15.9 | 13.914 h |
| August | 32.4°C24.4°C | 24.4°C | 123 | 15.7 | 13.213 h |
| September, selected | 30.2°C22.0°C | 22.0°C | 136 | 12.3 | 12.412 h |
| October | 26.2°C17.1°C | 17.1°C | 104 | 8.8 | 11.511 h |
| November | 20.8°C11.9°C | 11.9°C | 109 | 8.6 | 10.711 h |
| December | 17.1°C8.5°C | 8.5°C | 119 | 9.5 | 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
September in nearby cities
- Lake Charles in SeptemberUnited States · 87 kmHigh 30.3°C · Low 21.9°C · 121 mm rain
- Baytown in SeptemberUnited States · 93 kmHigh 30.3°C · Low 22.2°C · 129 mm rain
- League City in SeptemberUnited States · 115 kmHigh 30.0°C · Low 23.0°C · 130 mm rain
- Pasadena (Texas), United States in SeptemberUnited States · 115 kmHigh 30.6°C · Low 22.3°C · 118 mm rain
- Houston in SeptemberUnited States · 127 kmHigh 30.8°C · Low 22.1°C · 118 mm rain
- Pearland in SeptemberUnited States · 128 kmHigh 30.6°C · Low 22.3°C · 124 mm rain
- The Woodlands in SeptemberUnited States · 134 kmHigh 31.1°C · Low 21.8°C · 100 mm rain
- Missouri City in SeptemberUnited States · 148 kmHigh 30.7°C · Low 22.3°C · 116 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 Beaumont) is explained once on the Beaumont year overview and on the Sources, method and limits page.