Weather on March 31
Sunnyvale, CA
55 Years of Data
Avg High
68°F
Avg Low
48°F
Warmest
2011
71°F avg
Coldest
1982
48°F avg
About This Date
March 31st in Sunnyvale, CA typically brings mild spring weather, with average highs around 68°F and lows near 48°F. Over 56 years of records, the warmest March 31st was in 2011 (71°F average), while the coldest was 1982 (48°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 20% of March 31st dates historically, with the wettest March 31st recording 3.35" of rain. The last decade has been 1.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.1°F warmer on this date compared to 20-30 years ago.
Planning for March 31st in Sunnyvale, CA? Great weather for outdoor activities.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 72° | 59° | 65° | — | — |
| 2025 | 66° | 54° | 60° | — | — |
| 2024 | 69° | 45° | 57° | — | — |
| 2023 | 63° | 39° | 51° | — | — |
| 2022 | 70° | 45° | 57° | — | — |
| 2021 | 83° | 46° | 64° | — | — |
| 2020 | 67° | 50° | 58° | — | — |
| 2019 | 73° | 45° | 59° | — | — |
| 2018 | 70° | 51° | 60° | — | — |
| 2017 | 73° | 53° | 63° | — | — |
| 2016 | 66° | 50° | 58° | — | — |
| 2015 | 68° | 50° | 59° | — | — |
| 2014 | 57° | 45° | 51° | 1.32" | — |
| 2013 | 71° | 53° | 62° | 0.15" | — |
| 2012 | 61° | 48° | 54° | 0.64" | — |
| 2011warmest | 83° | 59° | 71° | — | — |
| 2010 | 60° | 43° | 51° | 0.58" | — |
| 2009 | 74° | 44° | 59° | — | — |
| 2008 | 64° | 38° | 51° | — | — |
| 2007 | 69° | 47° | 58° | — | — |
| 2006 | 59° | 45° | 52° | 0.23" | — |
| 2005 | 72° | 43° | 57° | — | — |
| 2004 | 64° | 44° | 54° | — | — |
| 2003 | 72° | 51° | 61° | — | — |
| 2002 | 71° | 48° | 60° | — | — |
| 2001 | 75° | 51° | 63° | — | — |
| 2000 | 82° | 51° | 67° | — | — |
| 1999 | 55° | 42° | 49° | — | — |
| 1998 | 60° | 47° | 53° | 0.53" | — |
| 1997 | 65° | 47° | 56° | — | — |
| 1996 | 78° | 46° | 62° | — | — |
| 1995 | 71° | 46° | 59° | — | — |
| 1994 | 72° | 46° | 59° | — | — |
| 1993 | 67° | 52° | 59° | 0.46" | — |
| 1992 | 71° | 50° | 61° | — | — |
| 1991 | 68° | 55° | 62° | — | — |
| 1990 | 62° | 52° | 57° | — | — |
| 1989 | 67° | 51° | 59° | — | — |
| 1988 | 74° | 58° | 66° | — | — |
| 1987 | 79° | 51° | 65° | — | — |
| 1986 | 76° | 56° | 66° | — | — |
| 1985 | 76° | 47° | 61° | — | — |
| 1984 | 58° | 46° | 52° | 0.56" | — |
| 1983 | 68° | 54° | 61° | — | — |
| 1982coldest | 54° | 43° | 48° | 3.35" | — |
| 1981 | 61° | 44° | 52° | — | — |
| 1980 | 67° | 49° | 58° | — | — |
| 1979 | 67° | 43° | 55° | — | — |
| 1978 | 62° | 55° | 59° | 0.61" | — |
| 1977 | 68° | 38° | 53° | — | — |
| 1976 | 59° | 44° | 52° | — | — |
| 1975 | 67° | 43° | 55° | — | — |
| 1974 | 63° | 43° | 53° | 0.15" | — |
| 1973 | 60° | 48° | 54° | — | — |
| 1972 | 61° | 47° | 54° | — | — |
| 1971 | 65° | 44° | 54° | — | — |
56 years of data from MOFFETT FED AIRFIELD