Weather on August 21
Evansville, IN
55 Years of Data
Avg High
89°F
Avg Low
68°F
Warmest
1983
88°F avg
Coldest
1997
66°F avg
About This Date
August 21st in Evansville, IN typically brings warm summer weather, with average highs around 89°F and lows near 68°F. Over 55 years of records, the warmest August 21st was in 1983 (88°F average), while the coldest was 1997 (66°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 29% of August 21st dates historically, with the wettest August 21st recording 2.51" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for August 21st in Evansville, IN? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 80° | 68° | 74° | — | — |
| 2024 | 77° | 57° | 67° | — | — |
| 2023 | 94° | 77° | 85° | — | — |
| 2022 | 87° | 73° | 80° | 0.13" | — |
| 2021 | 91° | 74° | 82° | 0.38" | — |
| 2020 | 85° | 68° | 76° | — | — |
| 2019 | 90° | — | — | 0.03" | — |
| 2018 | 84° | 69° | 77° | 0.2" | — |
| 2017 | 94° | 73° | 83° | — | — |
| 2016 | 85° | 68° | 76° | 0.36" | — |
| 2015 | 86° | 60° | 73° | — | — |
| 2014 | 93° | 80° | 87° | — | — |
| 2013 | 92° | 71° | 81° | — | — |
| 2012 | 84° | 63° | 73° | — | — |
| 2011 | 93° | 71° | 82° | — | — |
| 2010 | 97° | 74° | 85° | 1.22" | — |
| 2009 | 83° | 64° | 73° | 0.15" | — |
| 2008 | 94° | 75° | 84° | 0.23" | — |
| 2007 | 96° | 74° | 85° | 0.81" | — |
| 2006 | 86° | 69° | 78° | — | — |
| 2005 | 94° | 76° | 85° | — | — |
| 2004 | 89° | 64° | 77° | 0.81" | — |
| 2003 | 96° | 79° | 87° | — | — |
| 2002 | 98° | 72° | 85° | — | — |
| 2001 | 88° | 64° | 76° | — | — |
| 2000 | 80° | 65° | 72° | — | — |
| 1999 | 87° | 55° | 71° | — | — |
| 1998 | 90° | 58° | 74° | — | — |
| 1997coldest | 76° | 57° | 66° | — | — |
| 1996 | 91° | 68° | 80° | — | — |
| 1995 | 94° | 74° | 84° | — | — |
| 1994 | 81° | 62° | 71° | 2.51" | — |
| 1993 | 94° | 67° | 80° | — | — |
| 1992 | 85° | 61° | 73° | — | — |
| 1991 | 87° | 62° | 75° | — | — |
| 1990 | 86° | 73° | 80° | — | — |
| 1989 | 88° | 71° | 79° | 0.64" | — |
| 1988 | 89° | 71° | 80° | — | — |
| 1987 | 98° | 74° | 86° | — | — |
| 1986 | 88° | 68° | 78° | — | — |
| 1985 | 82° | 58° | 70° | — | — |
| 1984 | 91° | 60° | 76° | — | — |
| 1983warmest | 101° | 76° | 88° | — | — |
| 1982 | 85° | 66° | 75° | 0.61" | — |
| 1981 | 86° | 63° | 74° | — | — |
| 1980 | 94° | 75° | 84° | — | — |
| 1979 | 85° | 68° | 76° | 0.48" | — |
| 1978 | 85° | 56° | 70° | — | — |
| 1977 | 88° | 63° | 75° | 0.03" | — |
| 1976 | 90° | 62° | 76° | — | — |
| 1975 | 93° | 72° | 82° | — | — |
| 1974 | 87° | 64° | 76° | — | — |
| 1973 | 83° | 60° | 71° | — | — |
| 1972 | 94° | 71° | 82° | — | — |
| 1971 | 93° | 68° | 81° | 0.05" | — |
55 years of data from EVANSVILLE MUSEUM