Weather on September 18
Carmel, IN
55 Years of Data
Avg High
77°F
Avg Low
53°F
Warmest
1978
79°F avg
Coldest
1980
53°F avg
About This Date
September 18th in Carmel, IN typically brings pleasant fall weather, with average highs around 77°F and lows near 53°F. Over 54 years of records, the warmest September 18th was in 1978 (79°F average), while the coldest was 1980 (53°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 24% of September 18th dates historically, with the wettest September 18th recording 1.98" of rain. The last decade has been 6.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 6.8°F warmer on this date compared to 20-30 years ago.
Planning for September 18th in Carmel, IN? Great weather for outdoor activities.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 86° | 56° | 71° | — | — |
| 2024 | 85° | 53° | 69° | — | — |
| 2023 | 73° | 52° | 62° | 0.08" | — |
| 2022 | 82° | 61° | 71° | — | — |
| 2021 | 88° | 64° | 76° | — | — |
| 2020 | 73° | 49° | 61° | — | — |
| 2019 | 78° | 58° | 68° | — | — |
| 2018 | 88° | 65° | 76° | — | — |
| 2017 | 87° | 63° | 75° | 0.13" | — |
| 2016 | 79° | 65° | 72° | 0.71" | — |
| 2015 | 82° | 55° | 69° | — | — |
| 2014 | 66° | 45° | 55° | — | — |
| 2013 | 74° | 47° | 60° | — | — |
| 2012 | 72° | 56° | 64° | 0.61" | — |
| 2011 | 70° | 50° | 60° | — | — |
| 2010 | 75° | 50° | 63° | — | — |
| 2009 | 76° | 48° | 62° | — | — |
| 2008 | 81° | 53° | 67° | — | — |
| 2007 | 80° | 46° | 63° | — | — |
| 2006 | 83° | 59° | 71° | 1.98" | — |
| 2005 | 77° | 55° | 66° | — | — |
| 2004 | 74° | 47° | 60° | — | — |
| 2003 | 80° | 52° | 66° | — | — |
| 2002 | 81° | 58° | 69° | 0.13" | — |
| 2001 | 78° | 51° | 65° | 0.76" | — |
| 2000 | 75° | 49° | 62° | — | — |
| 1999 | 76° | 39° | 57° | — | — |
| 1997 | 79° | 51° | 65° | 0.41" | — |
| 1996 | 71° | 48° | 60° | — | — |
| 1995 | 72° | 42° | 57° | — | — |
| 1994 | 77° | 50° | 64° | — | — |
| 1993 | 70° | 47° | 58° | — | — |
| 1992 | 82° | 59° | 71° | — | — |
| 1991 | 75° | 56° | 65° | — | — |
| 1990 | 67° | 45° | 56° | — | — |
| 1989 | 73° | 49° | 61° | — | — |
| 1988 | 84° | 67° | 75° | — | — |
| 1987 | 77° | 63° | 70° | 0.05" | — |
| 1986 | 77° | 51° | 64° | 1.65" | — |
| 1985 | 80° | 53° | 67° | — | — |
| 1984 | 68° | 38° | 53° | — | — |
| 1983 | 79° | 56° | 67° | — | — |
| 1982 | 80° | 55° | 68° | 0.41" | — |
| 1981 | 60° | 46° | 53° | 0.38" | — |
| 1980coldest | 65° | 42° | 53° | — | — |
| 1979 | 78° | 56° | 67° | — | — |
| 1978warmest | 86° | 72° | 79° | 0.43" | — |
| 1977 | 83° | 65° | 74° | — | — |
| 1976 | 76° | 49° | 62° | — | — |
| 1975 | 72° | 59° | 65° | — | — |
| 1974 | 76° | 55° | 65° | — | — |
| 1973 | 71° | 45° | 58° | — | — |
| 1972 | 85° | 68° | 76° | — | — |
| 1971 | 74° | 51° | 62° | — | — |
54 years of data from CARMEL 3 E