Evansville, IN weather in September
Evansville is warm in September, with some rain: highs average 82°F and nights drop to about 59°F. Rain falls on about 8 days.
- Normal high
- 82°F
- Normal low
- 59°F
- Wet days
- 8
- 3.3 in total
- Muggy days
- 8
- dew point 65°F+
How September changes from start to finish
| September 1 | September 30 | |
|---|---|---|
| Normal high | 86°F | 77°F |
| Normal low | 64°F | 53°F |
| Chance of a wet day | 22% | 25% |
| Sunrise / sunset | 6:20 am / 7:20 pm | 6:45 am / 6:35 pm |
| Daylight | 13.0 h | 11.8 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Central Time).
A typical September day
- 6 am61°Fdew point 58°F
- 9 am72°Fdew point 60°F
- Noon78°Fdew point 58°F
- 3 pm80°Fdew point 58°F
- 6 pm74°Fdew point 59°F
- 9 pm67°Fdew point 59°F
NOAA hourly normals (local standard time) from Evansville Regional Airport (5 mi away); average wind 5 mph; clear or few clouds in 66% of daytime hours, mostly cloudy or overcast in 25%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F9 of 30
- Hot dayshigh 90°F or more6 of 30
- Muggy daysdaily mean dew point 65°F or more8 of 30
- Wet daysat least 0.01 in of rain or melted snow8 of 30
- Notable rainat least 0.10 in5 of 30
- Freezing nightslow 32°F or below0 of 30
- Snow on the groundsnow depth 1 in or more0 of 30
Average days per September, counted from daily records for each year 1991-2020.
Rain in September
Normal precipitation is 3.3 in; a dry September brings about 1.2 in and a wet one about 5.1 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more.
How September varies from year to year
- Warmest September, 1991-20202019: average high 89°F
- Coolest September2006: average high 75°F
- Wettest September2006: 8.8 in
- Driest September2019: 0.08 in
- Highest reading100°F (September 3, 2011)
- Lowest reading36°F (September 23, 1995)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
September compared with August and October
| August | September | October | |
|---|---|---|---|
| Normal high | 88°F | 82°F | 70°F |
| Normal low | 67°F | 59°F | 47°F |
| Wet days | 7 | 8 | 8 |
| Comfortable days | 1 | 9 | 15 |
| Daylight | 13.6 h | 12.4 h | 11.2 h |
Highs change by -6°F from August and -12°F into October.
Nearby alternatives in September
- Cooler: Carmel, IN159 mi · high 77°F · 7 wet days
How Evansville ranks in September
- Normal high180th warmest of 378 cities; 1st of 6 in Indiana
- Wet days175th driest of 378
- Comfortable days167th most of 342
Heating and cooling
September has 34 heating degree days and 191 cooling degree days (base 65°F), 4% of the year's total heating and cooling demand.
Questions
How hot is Evansville in September?
The normal high is 82°F and the normal low is 59°F. From 1991 to 2020 the hottest September reading was 100°F (most recently on September 3, 2011).
Does it rain a lot in Evansville in September?
About 8 days in September have at least 0.01 in of precipitation, and the normal total is 3.3 in. The wettest September in 1991-2020 was in 2006 (8.8 in); the driest was in 2019 (0.08 in).
Is September a good time to visit Evansville?
September ranks 4th of 12 months on our comfort score for Evansville (58 out of 100). It has about 9 comfortable days and about 6 days at 90°F or hotter. The best months are April and May.
Where the numbers come from
- Temperature, rain, snowfall, snow depth, frost dates, humidity and wind by hour and cloud cover: Evansville Regional Airport (USW00093817), 5.2 mi NNE of the city center, 400 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Evansville Regional Airport (724320-93817), 5.7 mi NNE of the city center, 402 ft . Hourly observations, 1991-2020.