Weather on March 31
Saint Louis, MO
55 Years of Data
About This Date
March 31st in Saint Louis, MO typically brings mild spring weather, with average highs around 62°F and lows near 41°F. Over 55 years of records, the warmest March 31st was in 2026 (74°F average), while the coldest was 1975 (35°F) — a 39°F range across recorded history. Rain or other precipitation has occurred on about 36% of March 31st dates historically, with the wettest March 31st recording 2.95" of rain. The last decade has been 3.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.8°F warmer on this date compared to 20-30 years ago.
Planning for March 31st in Saint Louis, MO? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026warmest | 84° | 65° | 74° | — | — |
| 2025 | 55° | 40° | 47° | — | — |
| 2024 | 82° | 55° | 69° | — | — |
| 2023 | 75° | 54° | 64° | 2.74" | — |
| 2022 | 42° | 38° | 40° | — | — |
| 2021 | 55° | 38° | 46° | — | — |
| 2020 | 62° | 40° | 51° | — | — |
| 2019 | 45° | 31° | 38° | — | — |
| 2018 | 58° | — | — | — | — |
| 2017 | 70° | 45° | 57° | 0.89" | — |
| 2016 | 68° | 57° | 63° | 1.78" | — |
| 2015 | 71° | 51° | 61° | — | — |
| 2014 | 64° | 46° | 55° | — | — |
| 2013 | 64° | 47° | 55° | 0.25" | — |
| 2012 | 82° | 49° | 65° | — | — |
| 2011 | 51° | 33° | 42° | — | — |
| 2010 | 72° | 41° | 56° | — | — |
| 2009 | 66° | 36° | 51° | 0.2" | — |
| 2008 | 62° | 47° | 54° | 0.03" | — |
| 2007 | 67° | 59° | 63° | 0.71" | — |
| 2006 | 77° | 45° | 61° | 0.08" | — |
| 2005 | 79° | 46° | 62° | 0.05" | — |
| 2004 | 53° | 36° | 44° | 0.05" | — |
| 2003 | 51° | 33° | 42° | — | — |
| 2002 | 62° | 42° | 52° | — | — |
| 2001 | 54° | 32° | 43° | — | — |
| 2000 | 60° | 33° | 47° | — | — |
| 1999 | 71° | 42° | 57° | — | — |
| 1998 | 78° | 57° | 68° | 1.4" | — |
| 1997 | 57° | 37° | 47° | — | — |
| 1996 | 58° | 41° | 49° | 2.95" | — |
| 1995 | 49° | 29° | 39° | — | — |
| 1994 | 57° | 24° | 41° | — | — |
| 1993 | 72° | 51° | 61° | 1.22" | — |
| 1992 | 63° | 31° | 47° | — | — |
| 1991 | 66° | 33° | 50° | — | — |
| 1990 | 60° | 46° | 53° | — | — |
| 1989 | 50° | 28° | 39° | 0.86" | — |
| 1988 | 55° | 45° | 50° | — | — |
| 1987 | 48° | 29° | 38° | — | — |
| 1986 | 84° | 56° | 70° | — | — |
| 1985 | 50° | 38° | 44° | 1.83" | — |
| 1984 | 55° | 28° | 42° | — | — |
| 1983 | 47° | 40° | 43° | 0.05" | — |
| 1982 | 68° | 46° | 57° | 0.76" | — |
| 1980 | 51° | 39° | 45° | 0.51" | — |
| 1979 | 70° | 43° | 56° | 0.53" | — |
| 1978 | 66° | 43° | 54° | — | — |
| 1977 | 71° | 38° | 54° | — | — |
| 1976 | 57° | 31° | 44° | — | — |
| 1975coldest | 45° | 26° | 35° | — | — |
| 1974 | 64° | 40° | 52° | — | — |
| 1973 | 66° | 41° | 54° | 1.57" | — |
| 1972 | 49° | 30° | 39° | — | — |
| 1971 | 71° | — | — | — | — |
Saint Louis, MO Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Saint Louis, MO Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Saint Louis, MO Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Saint Louis, MO
Saint Louis, MO has no months that meet our "pleasant" threshold — every season has tradeoffs.