Weather on December 18
Indianapolis, IN
55 Years of Data
Avg High
36°F
Avg Low
22°F
Warmest
2006
49°F avg
Coldest
1989
3°F avg
About This Date
December 18th in Indianapolis, IN typically brings cold winter weather, with average highs around 36°F and lows near 22°F. Over 55 years of records, the warmest December 18th was in 2006 (49°F average), while the coldest was 1989 (3°F) — a 46°F range across recorded history. Precipitation has occurred on 27% of recorded December 18th dates, with snow falling 7% of the time. The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.
Planning for December 18th in Indianapolis, IN? Bundle up with warm layers and protect extremities from the cold.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 53° | 39° | 46° | 1.88" | — |
| 2024 | 40° | 29° | 34° | 0.13" | — |
| 2023 | 37° | 23° | 30° | — | — |
| 2022 | 30° | 19° | 25° | — | — |
| 2021 | 43° | 31° | 37° | 1.52" | — |
| 2020 | 37° | 20° | 28° | — | — |
| 2019 | 28° | 8° | 18° | — | — |
| 2018 | 43° | 22° | 32° | — | — |
| 2017 | 46° | 40° | 43° | — | — |
| 2016 | 24° | 3° | 14° | 0.08" | 0.3" |
| 2015 | 33° | 27° | 30° | — | — |
| 2014 | 29° | 24° | 26° | — | — |
| 2013 | 36° | 16° | 26° | — | — |
| 2012 | 44° | 35° | 40° | 0.18" | — |
| 2011 | 36° | 24° | 30° | — | — |
| 2010 | 23° | 12° | 18° | — | — |
| 2009 | 39° | 25° | 32° | — | — |
| 2008 | 23° | 18° | 20° | — | — |
| 2007 | 23° | 17° | 20° | — | — |
| 2006warmest | 59° | 39° | 49° | 0.03" | — |
| 2005 | 33° | 16° | 24° | — | — |
| 2004 | 37° | 22° | 29° | — | — |
| 2003 | 29° | 20° | 24° | 0.18" | 0.5" |
| 2002 | 49° | 31° | 40° | 0.86" | — |
| 2001 | 48° | 33° | 41° | 1.35" | — |
| 2000 | 6° | 2° | 4° | — | — |
| 1999 | 48° | 27° | 37° | — | — |
| 1998 | 38° | 27° | 32° | — | — |
| 1997 | 44° | 25° | 34° | — | — |
| 1996 | 30° | 13° | 21° | — | 0.1" |
| 1995 | 34° | 30° | 32° | 1.83" | — |
| 1994 | 35° | 22° | 28° | — | — |
| 1993 | 41° | 34° | 37° | 0.41" | — |
| 1992 | 43° | 29° | 36° | — | — |
| 1991 | 40° | 21° | 30° | — | — |
| 1990 | 50° | 36° | 43° | 1.93" | — |
| 1989coldest | 10° | -4° | 3° | — | — |
| 1988 | 37° | 18° | 27° | — | — |
| 1987 | 27° | 20° | 23° | — | — |
| 1986 | 44° | 30° | 37° | 0.15" | — |
| 1985 | 28° | -4° | 12° | — | 1" |
| 1984 | 61° | 31° | 46° | — | — |
| 1983 | 26° | 15° | 21° | — | — |
| 1982 | 35° | 30° | 33° | — | — |
| 1981 | 30° | 12° | 21° | 0.18" | — |
| 1980 | 38° | 26° | 32° | — | — |
| 1979 | 23° | 8° | 16° | — | — |
| 1978 | 43° | 26° | 34° | — | — |
| 1977 | 54° | 36° | 45° | — | — |
| 1976 | 45° | 24° | 34° | — | — |
| 1975 | 28° | 8° | 18° | — | — |
| 1974 | 31° | 25° | 28° | 0.03" | — |
| 1973 | 24° | 11° | 17° | — | — |
| 1972 | 30° | 4° | 17° | — | — |
| 1971 | 40° | 13° | 26° | — | — |
55 years of data from INDIANAPOLIS SE SIDE