Weather on September 1
Indianapolis, IN
55 Years of Data
Avg High
81°F
Avg Low
61°F
Warmest
1973
80°F avg
Coldest
1994
54°F avg
About This Date
September 1st in Indianapolis, IN typically brings warm fall weather, with average highs around 81°F and lows near 61°F. Over 55 years of records, the warmest September 1st was in 1973 (80°F average), while the coldest was 1994 (54°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 25% of September 1st dates historically, with the wettest September 1st recording 10.24" 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 September 1st in Indianapolis, IN? Stay hydrated and seek shade during peak afternoon hours.
Cooling Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 79° | 53° | 66° | — | — |
| 2024 | 82° | 59° | 71° | — | — |
| 2023 | 80° | 53° | 67° | — | — |
| 2022 | 85° | 60° | 72° | — | — |
| 2021 | 77° | 62° | 70° | — | — |
| 2020 | 81° | 67° | 74° | 0.18" | — |
| 2019 | 77° | 63° | 70° | 0.05" | — |
| 2018 | 84° | 69° | 77° | — | — |
| 2017 | 65° | 57° | 61° | — | — |
| 2016 | 76° | 63° | 69° | — | — |
| 2015 | 85° | 68° | 76° | 0.33" | — |
| 2014 | 82° | 70° | 76° | 0.15" | — |
| 2013 | 84° | 66° | 75° | 0.03" | — |
| 2012 | 87° | 72° | 79° | — | — |
| 2011 | 92° | 64° | 78° | — | — |
| 2010 | 90° | 67° | 78° | — | — |
| 2009 | 70° | 50° | 60° | — | — |
| 2008 | 87° | 61° | 74° | — | — |
| 2007 | 76° | 55° | 65° | — | — |
| 2006 | 69° | 64° | 67° | 0.08" | — |
| 2005 | 78° | 58° | 68° | — | — |
| 2004 | 79° | 57° | 68° | — | — |
| 2003 | 70° | 62° | 66° | 10.24" | — |
| 2002 | 86° | 61° | 73° | — | — |
| 2001 | 79° | 57° | 68° | 0.03" | — |
| 2000 | 88° | 67° | 77° | — | — |
| 1999 | 83° | 57° | 70° | — | — |
| 1998 | 80° | 53° | 67° | — | — |
| 1997 | 86° | 62° | 74° | — | — |
| 1996 | 83° | 62° | 72° | — | — |
| 1995 | 81° | 54° | 67° | — | — |
| 1994coldest | 63° | 46° | 54° | — | — |
| 1993 | 80° | 65° | 72° | — | — |
| 1992 | 76° | 61° | 68° | 0.03" | — |
| 1991 | 83° | 64° | 73° | — | — |
| 1990 | 84° | 65° | 74° | — | — |
| 1989 | 82° | 67° | 74° | 3.3" | — |
| 1988 | 81° | 57° | 69° | — | — |
| 1987 | 76° | 48° | 62° | — | — |
| 1986 | 82° | 55° | 69° | — | — |
| 1985 | 80° | 59° | 70° | — | — |
| 1984 | 82° | 57° | 70° | 0.03" | — |
| 1983 | 88° | 65° | 76° | — | — |
| 1982 | 83° | 67° | 75° | 0.03" | — |
| 1981 | 88° | 69° | 78° | — | — |
| 1980 | 87° | 68° | 78° | — | — |
| 1979 | 86° | 64° | 75° | — | — |
| 1978 | 79° | 55° | 67° | — | — |
| 1977 | 92° | 68° | 80° | — | — |
| 1976 | 82° | 57° | 70° | — | — |
| 1975 | 71° | 63° | 67° | — | — |
| 1974 | 82° | 56° | 69° | 2.21" | — |
| 1973warmest | 91° | 69° | 80° | — | — |
| 1972 | 88° | 65° | 76° | 0.89" | — |
| 1971 | 88° | 65° | 76° | — | — |
55 years of data from INDIANAPOLIS SE SIDE