Climate averages 1991–2020
Lake Charles weather
in September.
A hot, wet month: the 4th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Lake Charles: daytime highs average 30.3°C and nights cool to about 21.9°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 121 mm of rain on roughly 12 days, which makes September a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 22 min on an average September day.
The nearest other city in this atlas is Beaumont (87 km away). In September its highs average 30.2°C, about as warm as Lake Charles, with 136 mm of rain.
Among the 498 cities listed in the United States, Lake Charles ranks joint 104th of 498 for the warmest September highs and joint 451st of 498 for the driest September (rainfall, lowest first). The mean September high of those 498 cities is 26.9°C; Lake Charles is 3.4°C warmer than that mean.
From September to October, average highs fall by 4.0°C to 26.3°C, and monthly rainfall falls from 121 mm to 95 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
Lake Charles climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 16.0°C7.1°C | 7.1°C | 129 | 9.9 | 10.410 h |
| February | 18.0°C9.0°C | 9.0°C | 96 | 9.5 | 11.111 h |
| March | 21.3°C12.2°C | 12.2°C | 104 | 10.4 | 12.012 h |
| April | 24.8°C15.7°C | 15.7°C | 118 | 9.8 | 12.913 h |
| May | 28.6°C20.2°C | 20.2°C | 101 | 10.5 | 13.714 h |
| June | 31.0°C23.4°C | 23.4°C | 133 | 14.8 | 14.114 h |
| July | 31.8°C24.5°C | 24.5°C | 114 | 16.3 | 13.914 h |
| August | 32.3°C24.4°C | 24.4°C | 117 | 15.9 | 13.213 h |
| September, selected | 30.3°C21.9°C | 21.9°C | 121 | 11.6 | 12.412 h |
| October | 26.3°C16.9°C | 16.9°C | 95 | 8.3 | 11.511 h |
| November | 20.8°C11.5°C | 11.5°C | 107 | 8.7 | 10.711 h |
| December | 17.1°C8.2°C | 8.2°C | 123 | 9.6 | 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
- Beaumont in SeptemberUnited States · 87 kmHigh 30.2°C · Low 22.0°C · 136 mm rain
- Lafayette (Louisiana), United States in SeptemberUnited States · 114 kmHigh 30.3°C · Low 22.0°C · 96 mm rain
- Baytown in SeptemberUnited States · 179 kmHigh 30.3°C · Low 22.2°C · 129 mm rain
- Baton Rouge in SeptemberUnited States · 195 kmHigh 30.1°C · Low 21.8°C · 100 mm rain
- League City in SeptemberUnited States · 198 kmHigh 30.0°C · Low 23.0°C · 130 mm rain
- Pasadena (Texas), United States in SeptemberUnited States · 202 kmHigh 30.6°C · Low 22.3°C · 118 mm rain
- Pearland in SeptemberUnited States · 213 kmHigh 30.6°C · Low 22.3°C · 124 mm rain
- Houston in SeptemberUnited States · 214 kmHigh 30.8°C · Low 22.1°C · 118 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 Lake Charles) is explained once on the Lake Charles year overview and on the Sources, method and limits page.