Weather on March 31
San Antonio, TX
55 Years of Data
About This Date
March 31st in San Antonio, TX typically brings pleasant spring weather, with average highs around 78°F and lows near 53°F — a 25°F daily swing. Over 56 years of records, the warmest March 31st was in 2026 (79°F average), while the coldest was 2003 (50°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 16% of March 31st dates historically, with the wettest March 31st recording 3.56" of rain. The last decade has been 6.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 6.1°F warmer on this date compared to 20-30 years ago.
Planning for March 31st in San Antonio, TX? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026warmest | 89° | 68° | 79° | — | — |
| 2025 | 87° | 66° | 77° | 0.84" | — |
| 2024 | 75° | 64° | 70° | — | — |
| 2023 | 87° | 66° | 77° | — | — |
| 2022 | 80° | 47° | 63° | — | — |
| 2021 | 80° | 61° | 70° | — | — |
| 2020 | 74° | 59° | 66° | — | — |
| 2019 | 69° | 48° | 59° | — | — |
| 2018 | 73° | 58° | 65° | — | — |
| 2017 | 86° | 52° | 69° | — | — |
| 2016 | 86° | 66° | 76° | — | — |
| 2015 | 77° | 67° | 72° | — | — |
| 2014 | 81° | 48° | 64° | — | — |
| 2013 | 85° | 64° | 74° | — | — |
| 2012 | 85° | 63° | 74° | — | — |
| 2011 | 71° | 46° | 59° | — | — |
| 2010 | 81° | 44° | 62° | — | — |
| 2009 | 85° | 54° | 69° | — | — |
| 2008 | 82° | 69° | 76° | 0.15" | — |
| 2007 | 74° | 58° | 66° | 3.56" | — |
| 2006 | 82° | 65° | 73° | — | — |
| 2005 | 88° | 56° | 72° | — | — |
| 2004 | 82° | 44° | 63° | — | — |
| 2003coldest | 69° | 31° | 50° | — | — |
| 2002 | 85° | 55° | 70° | 0.15" | — |
| 2001 | 66° | 49° | 57° | — | — |
| 2000 | 94° | 55° | 74° | — | — |
| 1999 | 73° | 57° | 65° | — | — |
| 1998 | 88° | 52° | 70° | 0.05" | — |
| 1997 | 63° | 50° | 56° | 0.91" | — |
| 1996 | 74° | 52° | 63° | — | — |
| 1995 | 60° | 52° | 56° | 0.15" | — |
| 1994 | 73° | 46° | 60° | — | — |
| 1993 | 78° | 53° | 66° | — | — |
| 1992 | 70° | 50° | 60° | — | — |
| 1991 | 70° | 41° | 55° | — | — |
| 1990 | 71° | 54° | 62° | — | — |
| 1989 | 76° | 53° | 64° | — | — |
| 1988 | 77° | 53° | 65° | 0.03" | — |
| 1987 | 75° | 31° | 53° | — | — |
| 1986 | 81° | 58° | 69° | — | — |
| 1985 | 71° | 38° | 54° | — | — |
| 1984 | 78° | 56° | 67° | — | — |
| 1983 | 84° | 51° | 68° | — | — |
| 1982 | 86° | 65° | 75° | — | — |
| 1981 | 83° | 50° | 66° | — | — |
| 1980 | 80° | 47° | 63° | — | — |
| 1979 | 76° | 61° | 68° | 0.05" | — |
| 1978 | 79° | 58° | 68° | — | — |
| 1977 | 69° | 53° | 61° | — | — |
| 1976 | 77° | 40° | 58° | — | — |
| 1975 | 69° | 44° | 57° | — | — |
| 1974 | 90° | 53° | 71° | — | — |
| 1973 | 84° | 46° | 65° | — | — |
| 1972 | 72° | 36° | 54° | — | — |
| 1971 | 86° | 54° | 70° | — | — |
San Antonio, TX Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
San Antonio, TX Monthly Precipitation
Average rainfall and snowfall per month, in inches.
San Antonio, TX 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 San Antonio, TX
San Antonio, TX has no months that meet our "pleasant" threshold — every season has tradeoffs.