Weather on March 21
Des Moines, IA
55 Years of Data
Avg High
52°F
Avg Low
29°F
Warmest
2026
72°F avg
Coldest
2013
18°F avg
About This Date
March 21st in Des Moines, IA typically brings cool spring weather, with average highs around 52°F and lows near 29°F. Over 56 years of records, the warmest March 21st was in 2026 (72°F average), while the coldest was 2013 (18°F) — a 54°F range across recorded history. Precipitation has occurred on 20% of recorded March 21st dates, with snow falling 2% of the time. The last decade has been 8.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 8.3°F warmer on this date compared to 20-30 years ago.
Planning for March 21st in Des Moines, IA? Bring layers as temperatures can vary throughout the day.
Warming Trend
1.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026warmest | 91° | 53° | 72° | — | — |
| 2025 | 59° | 33° | 46° | 0.03" | — |
| 2024 | 51° | 29° | 40° | — | — |
| 2023 | 53° | 39° | 46° | — | — |
| 2022 | 75° | 50° | 63° | 0.15" | — |
| 2021 | 61° | 31° | 46° | — | — |
| 2020 | 34° | 22° | 28° | — | — |
| 2019 | 55° | 30° | 43° | — | — |
| 2018 | 39° | 25° | 32° | — | — |
| 2017 | 66° | 41° | 54° | — | — |
| 2016 | 46° | 23° | 35° | — | — |
| 2015 | 63° | 32° | 47° | — | — |
| 2014 | 53° | 24° | 39° | — | — |
| 2013coldest | 26° | 11° | 18° | — | — |
| 2012 | 66° | 55° | 61° | 0.3" | — |
| 2011 | 67° | 38° | 52° | 0.03" | — |
| 2010 | 38° | 27° | 32° | — | — |
| 2009 | 59° | 32° | 46° | — | — |
| 2008 | 58° | 34° | 46° | — | — |
| 2007 | 58° | 28° | 43° | 0.43" | — |
| 2006 | 36° | 18° | 27° | — | — |
| 2005 | 49° | 23° | 36° | — | — |
| 2004 | 55° | 21° | 38° | — | — |
| 2003 | 44° | 31° | 37° | — | — |
| 2002 | 52° | 14° | 33° | — | — |
| 2001 | 54° | 29° | 41° | — | — |
| 2000 | 45° | 34° | 39° | — | — |
| 1999 | 63° | 23° | 43° | — | — |
| 1998 | 38° | 28° | 33° | — | — |
| 1997 | 64° | 31° | 47° | — | — |
| 1996 | 42° | 16° | 29° | — | — |
| 1995 | 44° | 28° | 36° | — | — |
| 1994 | 67° | 32° | 49° | 0.18" | — |
| 1993 | 34° | 28° | 31° | — | — |
| 1992 | 50° | 33° | 42° | 0.41" | — |
| 1991 | 68° | — | — | — | — |
| 1990 | 58° | 25° | 41° | — | — |
| 1989 | 37° | 13° | 25° | — | — |
| 1988 | 52° | 24° | 38° | — | — |
| 1987 | 65° | 41° | 53° | — | — |
| 1986 | 48° | 21° | 35° | — | — |
| 1985 | 62° | 28° | 45° | — | — |
| 1984 | 35° | 30° | 33° | — | — |
| 1983 | 30° | 18° | 24° | 0.25" | 0.7" |
| 1982 | 39° | 28° | 34° | — | — |
| 1981 | 47° | 36° | 41° | — | — |
| 1980 | 44° | 28° | 36° | — | — |
| 1979 | 45° | 35° | 40° | — | — |
| 1978 | 50° | 30° | 40° | — | — |
| 1977 | 42° | 30° | 36° | 0.33" | — |
| 1976 | 59° | 27° | 43° | — | — |
| 1975 | 54° | 32° | 43° | — | — |
| 1974 | 31° | 9° | 20° | 0.76" | — |
| 1973 | 51° | 26° | 39° | — | — |
| 1972 | 72° | 46° | 59° | 0.25" | — |
| 1971 | 45° | 27° | 36° | — | — |
56 years of data from ANKENY