Weather on August 15
Indianapolis, IN
55 Years of Data
Avg High
82°F
Avg Low
63°F
Warmest
1988
86°F avg
Coldest
2013
60°F avg
About This Date
August 15th in Indianapolis, IN typically brings warm summer weather, with average highs around 82°F and lows near 63°F. Over 55 years of records, the warmest August 15th was in 1988 (86°F average), while the coldest was 2013 (60°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 29% of August 15th dates historically, with the wettest August 15th recording 4.09" of rain. The last decade has been 2.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.4°F warmer on this date compared to 20-30 years ago.
Planning for August 15th in Indianapolis, IN? Stay hydrated and seek shade during peak afternoon hours.
Cooling Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 90° | 66° | 78° | — | — |
| 2024 | 80° | 65° | 72° | 0.84" | — |
| 2023 | 72° | 62° | 67° | — | — |
| 2022 | 78° | 66° | 72° | — | — |
| 2021 | 79° | 60° | 69° | — | — |
| 2020 | 87° | 65° | 76° | — | — |
| 2019 | 82° | 62° | 72° | — | — |
| 2018 | 78° | 68° | 73° | 1.65" | — |
| 2017 | 88° | 64° | 76° | — | — |
| 2016 | 76° | 69° | 72° | 2.69" | — |
| 2015 | 83° | 65° | 74° | 0.05" | — |
| 2014 | 77° | 46° | 62° | — | — |
| 2013coldest | 71° | 49° | 60° | — | — |
| 2012 | 76° | 57° | 66° | — | — |
| 2011 | 75° | 61° | 68° | 0.18" | — |
| 2010 | 90° | 72° | 81° | — | — |
| 2009 | 84° | 61° | 72° | — | — |
| 2008 | 73° | 57° | 65° | 0.08" | — |
| 2007 | 83° | 63° | 73° | — | — |
| 2006 | 83° | 61° | 72° | 0.81" | — |
| 2005 | 76° | 67° | 71° | 0.3" | — |
| 2004 | 71° | 53° | 62° | — | — |
| 2003 | 88° | 69° | 78° | — | — |
| 2002 | 77° | 68° | 73° | — | — |
| 2001 | 81° | 58° | 69° | — | — |
| 2000 | 79° | 66° | 72° | — | — |
| 1999 | 71° | 52° | 61° | — | — |
| 1998 | 79° | 57° | 68° | — | — |
| 1997 | 80° | 63° | 71° | 0.23" | — |
| 1996 | 86° | 69° | 78° | — | — |
| 1995 | 91° | 72° | 81° | — | — |
| 1994 | 75° | 50° | 63° | — | — |
| 1993 | 87° | 68° | 78° | — | — |
| 1992 | 71° | 54° | 62° | — | — |
| 1991 | 83° | 64° | 73° | — | — |
| 1990 | 75° | 52° | 63° | — | — |
| 1989 | 83° | 64° | 73° | — | — |
| 1988warmest | 96° | 76° | 86° | — | — |
| 1987 | 94° | 59° | 76° | — | — |
| 1986 | 89° | 61° | 75° | — | — |
| 1985 | 85° | 68° | 76° | 4.09" | — |
| 1984 | 85° | 65° | 75° | — | — |
| 1983 | 84° | 61° | 72° | — | — |
| 1982 | 83° | 59° | 71° | — | — |
| 1981 | 81° | 65° | 73° | 0.99" | — |
| 1980 | 85° | 69° | 77° | — | — |
| 1979 | 75° | 50° | 63° | — | — |
| 1978 | 85° | 68° | 76° | — | — |
| 1977 | 84° | 65° | 74° | — | — |
| 1976 | 85° | 66° | 75° | 0.2" | — |
| 1975 | 85° | 69° | 77° | 0.15" | — |
| 1974 | 85° | 66° | 75° | — | — |
| 1973 | 74° | 64° | 69° | 2.59" | — |
| 1972 | 88° | 68° | 78° | 0.38" | — |
| 1971 | 86° | 62° | 74° | 0.43" | — |
55 years of data from INDIANAPOLIS SE SIDE