Climate averages 1991–2020
Evansville weather
in September.
A warm, moderately wet month: the 4th warmest and the 2nd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Evansville: daytime highs average 26.7°C and nights cool to about 17.5°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 82 mm of rain on roughly 8 days, which makes September a moderately wet month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 28 min on an average September day.
The nearest other city in this atlas is Bloomington (Indiana), United States (160 km away). In September its highs average 25.3°C, 1.4°C cooler than Evansville, with 73 mm of rain.
Among the 498 cities listed in the United States, Evansville ranks joint 250th of 498 for the warmest September highs and joint 288th of 498 for the driest September (rainfall, lowest first). The mean September high of those 498 cities is 26.9°C; Evansville is 0.2°C cooler than that mean.
From September to October, average highs fall by 6.6°C to 20.2°C, and monthly rainfall rises from 82 mm to 90 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
Evansville climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 5.2°C-2.5°C | -2.5°C | 94 | 9.1 | 9.910 h |
| February | 7.8°C-1.0°C | -1.0°C | 85 | 9.0 | 10.811 h |
| March | 13.3°C3.6°C | 3.6°C | 111 | 11.5 | 11.912 h |
| April | 19.5°C9.4°C | 9.4°C | 130 | 12.0 | 13.213 h |
| May | 24.6°C15.1°C | 15.1°C | 123 | 13.0 | 14.214 h |
| June | 29.1°C19.8°C | 19.8°C | 98 | 11.3 | 14.815 h |
| July | 30.8°C22.0°C | 22.0°C | 86 | 10.4 | 14.515 h |
| August | 30.3°C21.4°C | 21.4°C | 76 | 8.2 | 13.614 h |
| September, selected | 26.7°C17.5°C | 17.5°C | 82 | 7.7 | 12.512 h |
| October | 20.2°C11.2°C | 11.2°C | 90 | 8.0 | 11.211 h |
| November | 12.7°C4.7°C | 4.7°C | 95 | 8.9 | 10.210 h |
| December | 7.1°C-0.2°C | -0.2°C | 102 | 10.2 | 9.610 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
- Bloomington (Indiana), United States in SeptemberUnited States · 160 kmHigh 25.3°C · Low 15.6°C · 73 mm rain
- Louisville in SeptemberUnited States · 160 kmHigh 26.5°C · Low 16.5°C · 77 mm rain
- Clarksville in SeptemberUnited States · 162 kmHigh 27.6°C · Low 17.9°C · 82 mm rain
- Nashville in SeptemberUnited States · 212 kmHigh 27.6°C · Low 17.7°C · 83 mm rain
- Indianapolis in SeptemberUnited States · 233 kmHigh 24.6°C · Low 15.2°C · 72 mm rain
- Franklin in SeptemberUnited States · 236 kmHigh 27.5°C · Low 18.0°C · 82 mm rain
- Decatur in SeptemberUnited States · 240 kmHigh 25.0°C · Low 15.4°C · 82 mm rain
- St. Louis in SeptemberUnited States · 242 kmHigh 26.4°C · Low 16.6°C · 83 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 Evansville) is explained once on the Evansville year overview and on the Sources, method and limits page.