Weather on April 20
San Bernardino, CA
55 Years of Data
Avg High
77°F
Avg Low
49°F
Warmest
2009
79°F avg
Coldest
1995
48°F avg
About This Date
April 20th in San Bernardino, CA typically brings pleasant spring weather, with average highs around 77°F and lows near 49°F — a 28°F daily swing. Over 48 years of records, the warmest April 20th was in 2009 (79°F average), while the coldest was 1995 (48°F) — a 31°F range across recorded history. Rain or other precipitation has occurred on about 8% of April 20th dates historically, with the wettest April 20th recording 2.54" of rain.
Planning for April 20th in San Bernardino, CA? Great weather for outdoor activities.
Warming Trend
1.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 82° | 46° | 64° | — | — |
| 2017 | 78° | 54° | 66° | — | — |
| 2016 | 84° | 56° | 70° | — | — |
| 2015 | 77° | 50° | 64° | — | — |
| 2014 | 84° | 53° | 69° | — | — |
| 2013 | 92° | 48° | 70° | — | — |
| 2012 | 99° | 55° | 77° | — | — |
| 2011 | 71° | 54° | 62° | — | — |
| 2010 | 68° | 48° | 58° | — | — |
| 2009warmest | 101° | 57° | 79° | — | — |
| 2008 | 69° | 43° | 56° | — | — |
| 2007 | 53° | 48° | 51° | 0.76" | — |
| 2006 | 81° | 46° | 63° | — | — |
| 2005 | 73° | 45° | 59° | — | — |
| 2004 | 73° | 46° | 60° | — | — |
| 2003 | 78° | 46° | 62° | — | — |
| 2002 | 71° | 43° | 57° | — | — |
| 2001 | 65° | 48° | 56° | — | — |
| 2000 | 84° | 49° | 66° | — | — |
| 1999 | 85° | 54° | 69° | — | — |
| 1998 | 91° | 52° | 71° | — | — |
| 1997 | 74° | 56° | 65° | — | — |
| 1996 | 74° | 47° | 60° | — | — |
| 1995coldest | 54° | 42° | 48° | — | — |
| 1994 | 85° | 56° | 70° | — | — |
| 1993 | 89° | 53° | 71° | — | — |
| 1992 | 84° | 51° | 68° | — | — |
| 1991 | 70° | 48° | 59° | — | — |
| 1990 | 74° | 55° | 64° | — | — |
| 1989 | 87° | 54° | 70° | — | — |
| 1988 | 55° | 48° | 52° | 2.54" | — |
| 1987 | 84° | 50° | 67° | — | — |
| 1986 | 91° | 47° | 69° | — | — |
| 1985 | 62° | 51° | 57° | — | — |
| 1984 | 74° | 48° | 61° | — | — |
| 1983 | 65° | 51° | 58° | 2.08" | — |
| 1982 | 84° | 53° | 69° | — | — |
| 1981 | 65° | 49° | 57° | 0.18" | — |
| 1980 | 84° | 52° | 68° | — | — |
| 1979 | 83° | 45° | 64° | — | — |
| 1978 | 70° | 48° | 59° | — | — |
| 1977 | 85° | 44° | 64° | — | — |
| 1976 | 88° | 48° | 68° | — | — |
| 1975 | 82° | 43° | 62° | — | — |
| 1974 | 70° | 44° | 57° | — | — |
| 1973 | 72° | 42° | 57° | — | — |
| 1972 | 74° | 37° | 55° | — | — |
| 1971 | 58° | 47° | 52° | — | — |
48 years of data from NORTON AFB