Weather on March 21
Indianapolis, IN
55 Years of Data
Avg High
53°F
Avg Low
32°F
Warmest
2012
72°F avg
Coldest
1986
22°F avg
About This Date
March 21st in Indianapolis, IN typically brings cool spring weather, with average highs around 53°F and lows near 32°F. Over 56 years of records, the warmest March 21st was in 2012 (72°F average), while the coldest was 1986 (22°F) — a 50°F range across recorded history. Precipitation has occurred on 36% of recorded March 21st dates, with snow falling 4% of the time (heaviest snowfall: 3.3"). The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
Planning for March 21st in Indianapolis, IN? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Warming Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 77° | 43° | 60° | — | — |
| 2025 | 57° | 25° | 41° | — | — |
| 2024 | 42° | 25° | 33° | — | — |
| 2023 | 53° | 30° | 42° | 0.13" | — |
| 2022 | 72° | 39° | 55° | — | — |
| 2021 | 65° | 33° | 49° | — | — |
| 2020 | 35° | 29° | 32° | — | — |
| 2019 | 43° | 38° | 40° | 0.25" | — |
| 2018 | 45° | 25° | 35° | 0.76" | 3.3" |
| 2017 | 58° | 37° | 47° | — | — |
| 2016 | 51° | 25° | 38° | — | — |
| 2015 | 62° | 35° | 49° | — | — |
| 2014 | 68° | 36° | 52° | — | — |
| 2013 | 31° | 16° | 23° | — | — |
| 2012warmest | 83° | 62° | 72° | — | — |
| 2011 | 68° | 41° | 55° | 0.03" | — |
| 2010 | 67° | 37° | 52° | — | — |
| 2009 | 45° | 23° | 34° | — | — |
| 2008 | 50° | 28° | 39° | — | — |
| 2007 | 54° | 37° | 45° | 0.05" | — |
| 2006 | 40° | 24° | 32° | 0.08" | 1" |
| 2005 | 41° | 21° | 31° | — | — |
| 2004 | 65° | 29° | 47° | 0.15" | — |
| 2003 | 71° | 50° | 61° | 1.14" | — |
| 2002 | 46° | 30° | 38° | 0.05" | — |
| 2001 | 52° | 35° | 43° | — | — |
| 2000 | 54° | 38° | 46° | 0.36" | — |
| 1999 | 54° | 30° | 42° | — | — |
| 1998 | 37° | 30° | 34° | 1.02" | — |
| 1997 | 57° | 45° | 51° | — | — |
| 1996 | 28° | 17° | 23° | — | — |
| 1995 | 54° | 34° | 44° | — | — |
| 1994 | 59° | 33° | 46° | — | — |
| 1993 | 43° | 34° | 38° | 0.03" | — |
| 1992 | 45° | 30° | 37° | 0.13" | — |
| 1991 | 60° | 40° | 50° | — | — |
| 1990 | 42° | 23° | 33° | — | — |
| 1989 | 42° | 28° | 35° | 2.46" | — |
| 1988 | 44° | 26° | 35° | — | — |
| 1987 | 60° | 24° | 42° | — | — |
| 1986coldest | 26° | 17° | 22° | — | — |
| 1985 | 61° | 32° | 46° | — | — |
| 1984 | 51° | 30° | 41° | — | — |
| 1983 | 40° | 28° | 34° | 1.65" | — |
| 1982 | 72° | 39° | 55° | 0.03" | — |
| 1981 | 40° | 26° | 33° | — | — |
| 1980 | 52° | 36° | 44° | 1.73" | — |
| 1979 | 70° | 46° | 58° | — | — |
| 1978 | 65° | 32° | 48° | 0.58" | — |
| 1977 | 46° | 32° | 39° | — | — |
| 1976 | 70° | 47° | 58° | 1.75" | — |
| 1975 | 64° | 39° | 52° | — | — |
| 1974 | 50° | 29° | 39° | 0.36" | — |
| 1973 | 42° | 29° | 35° | — | — |
| 1972 | 72° | 44° | 58° | — | — |
| 1971 | 39° | 26° | 33° | — | — |
56 years of data from INDIANAPOLIS SE SIDE