Weather on May 31
San Bernardino, CA
55 Years of Data
About This Date
May 31st in San Bernardino, CA typically brings warm spring weather, with average highs around 85°F and lows near 56°F — a 29°F daily swing. Over 49 years of records, the warmest May 31st was in 2025 (82°F average), while the coldest was 1980 (56°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 2% of May 31st dates historically.
Planning for May 31st in San Bernardino, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 91° | 57° | 74° | — | — |
| 2025warmest | 99° | 65° | 82° | — | — |
| 2017 | 72° | 56° | 64° | — | — |
| 2016 | 81° | 55° | 68° | — | — |
| 2015 | 83° | 58° | 70° | — | — |
| 2014 | 89° | 58° | 73° | — | — |
| 2013 | 91° | 59° | 75° | — | — |
| 2012 | 98° | 56° | 77° | — | — |
| 2011 | 84° | 49° | 66° | — | — |
| 2010 | 81° | 55° | 68° | — | — |
| 2009 | 80° | 57° | 69° | — | — |
| 2008 | 82° | 49° | 65° | — | — |
| 2007 | 83° | 50° | 66° | — | — |
| 2006 | 99° | 55° | 77° | — | — |
| 2005 | 86° | 54° | 70° | — | — |
| 2004 | 95° | 58° | 76° | — | — |
| 2003 | 88° | 58° | 73° | — | — |
| 2002 | 90° | 58° | 74° | — | — |
| 2001 | 100° | 60° | 80° | — | — |
| 2000 | 85° | 61° | 73° | — | — |
| 1999 | 82° | 54° | 68° | — | — |
| 1998 | 82° | 52° | 67° | — | — |
| 1997 | 96° | 63° | 79° | — | — |
| 1996 | 84° | 51° | 68° | — | — |
| 1995 | 94° | 59° | 76° | — | — |
| 1994 | 80° | 59° | 70° | — | — |
| 1993 | 81° | 61° | 71° | — | — |
| 1992 | 91° | 59° | 75° | — | — |
| 1991 | 69° | 50° | 60° | — | — |
| 1990 | 71° | 55° | 63° | — | — |
| 1989 | 87° | 51° | 69° | — | — |
| 1988 | 82° | 49° | 65° | — | — |
| 1987 | 90° | 51° | 70° | — | — |
| 1986 | 84° | 57° | 71° | — | — |
| 1985 | 75° | 64° | 70° | — | — |
| 1984 | 93° | 62° | 78° | — | — |
| 1983 | 83° | 59° | 71° | — | — |
| 1982 | 78° | 51° | 65° | — | — |
| 1981 | 90° | 61° | 75° | — | — |
| 1980coldest | 68° | 45° | 56° | 0.05" | — |
| 1979 | 83° | 58° | 70° | — | — |
| 1978 | 86° | 55° | 71° | — | — |
| 1977 | 96° | 56° | 76° | — | — |
| 1976 | 85° | 51° | 68° | — | — |
| 1975 | 90° | 55° | 72° | — | — |
| 1974 | 75° | 57° | 66° | — | — |
| 1973 | 78° | 58° | 68° | — | — |
| 1972 | 96° | 59° | 78° | — | — |
| 1971 | 70° | 53° | 61° | — | — |
San Bernardino, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
San Bernardino, CA Monthly Precipitation
Average rainfall and snowfall per month, in inches.
San Bernardino, CA 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 Bernardino, CA
San Bernardino, CA has no months that meet our "pleasant" threshold — every season has tradeoffs.