Weather on September 21
Evansville, IN
55 Years of Data
Avg High
82°F
Avg Low
60°F
Warmest
2010
85°F avg
Coldest
1983
53°F avg
About This Date
September 21st in Evansville, IN typically brings warm fall weather, with average highs around 82°F and lows near 60°F. Over 55 years of records, the warmest September 21st was in 2010 (85°F average), while the coldest was 1983 (53°F) — a 32°F range across recorded history. Rain or other precipitation has occurred on about 35% of September 21st dates historically, with the wettest September 21st recording 7.19" of rain. The last decade has been 8.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 8.6°F warmer on this date compared to 20-30 years ago.
Planning for September 21st in Evansville, IN? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Warming Trend
2.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 88° | 64° | 76° | 0.03" | — |
| 2024 | 95° | 70° | 82° | 0.08" | — |
| 2023 | 84° | 66° | 75° | 1.09" | — |
| 2022 | 96° | 73° | 85° | — | — |
| 2021 | 85° | 68° | 76° | — | — |
| 2020 | 79° | 52° | 65° | — | — |
| 2019 | 93° | 73° | 83° | — | — |
| 2018 | 93° | 74° | 83° | — | — |
| 2017 | 92° | 71° | 81° | — | — |
| 2016 | 91° | 66° | 79° | — | — |
| 2015 | 81° | 54° | 67° | — | — |
| 2014 | 85° | 63° | 74° | 0.91" | — |
| 2013 | 88° | 58° | 73° | 2.34" | — |
| 2012 | 80° | 58° | 69° | — | — |
| 2011 | 82° | 68° | 75° | 0.13" | — |
| 2010warmest | 97° | 73° | 85° | — | — |
| 2009 | 88° | 69° | 78° | 0.3" | — |
| 2008 | 83° | 63° | 73° | 0.03" | — |
| 2007 | 94° | 64° | 79° | — | — |
| 2006 | 69° | 46° | 58° | — | — |
| 2005 | 91° | 68° | 80° | — | — |
| 2004 | 90° | 58° | 74° | — | — |
| 2003 | 81° | 56° | 68° | — | — |
| 2002 | 82° | 60° | 71° | 0.08" | — |
| 2001 | 84° | 64° | 74° | — | — |
| 2000 | 85° | 51° | 68° | 1.52" | — |
| 1999 | 70° | 48° | 59° | 0.18" | — |
| 1998 | 87° | 69° | 78° | 0.18" | — |
| 1997 | 74° | 52° | 63° | — | — |
| 1996 | 73° | 56° | 64° | 7.19" | — |
| 1995 | 71° | 59° | 65° | — | — |
| 1994 | 84° | 59° | 72° | — | — |
| 1993 | 81° | 62° | 71° | — | — |
| 1992 | 83° | 68° | 75° | 0.94" | — |
| 1991 | 71° | 42° | 57° | — | — |
| 1990 | 72° | 62° | 67° | 2.18" | — |
| 1989 | 85° | 63° | 74° | — | — |
| 1988 | 84° | 52° | 68° | — | — |
| 1987 | 74° | 54° | 64° | — | — |
| 1986 | 91° | 69° | 80° | 0.05" | — |
| 1985 | 85° | 56° | 70° | — | — |
| 1984 | 88° | 55° | 71° | — | — |
| 1983coldest | 63° | 44° | 53° | 0.3" | — |
| 1982 | 65° | 47° | 56° | — | — |
| 1981 | 81° | 50° | 65° | — | — |
| 1980 | 91° | 73° | 82° | — | — |
| 1979 | 66° | 59° | 63° | 5.46" | — |
| 1978 | 85° | 68° | 76° | — | — |
| 1977 | 77° | 51° | 64° | — | — |
| 1976 | 77° | 51° | 64° | — | — |
| 1975 | 68° | 53° | 61° | — | — |
| 1974 | 74° | 59° | 66° | — | — |
| 1973 | 85° | 62° | 73° | — | — |
| 1972 | 85° | 64° | 74° | 0.41" | — |
| 1971 | 72° | 45° | 58° | — | — |
55 years of data from EVANSVILLE MUSEUM