Weather on May 31
Sunnyvale, CA
55 Years of Data
Avg High
75°F
Avg Low
55°F
Warmest
2001
80°F avg
Coldest
1974
56°F avg
About This Date
May 31st in Sunnyvale, CA typically brings pleasant spring weather, with average highs around 75°F and lows near 55°F. Over 54 years of records, the warmest May 31st was in 2001 (80°F average), while the coldest was 1974 (56°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 2% of May 31st dates historically. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for May 31st in Sunnyvale, CA? Great weather for outdoor activities.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 82° | 59° | 71° | — | — |
| 2024 | 87° | 58° | 72° | — | — |
| 2023 | 71° | 54° | 62° | — | — |
| 2021 | 85° | 56° | 70° | — | — |
| 2020 | 72° | 55° | 63° | — | — |
| 2019 | 74° | 57° | 65° | — | — |
| 2018 | 64° | 53° | 59° | — | — |
| 2017 | 74° | 56° | 65° | — | — |
| 2016 | 84° | 58° | 71° | — | — |
| 2015 | 68° | 55° | 62° | — | — |
| 2014 | 73° | 53° | 63° | — | — |
| 2013 | 82° | 52° | 67° | — | — |
| 2012 | 80° | 53° | 67° | — | — |
| 2011 | 64° | 52° | 58° | — | — |
| 2010 | 73° | 55° | 64° | — | — |
| 2009 | 67° | 56° | 61° | — | — |
| 2008 | 65° | 53° | 59° | — | — |
| 2007 | 65° | 54° | 59° | — | — |
| 2006 | 73° | 55° | 64° | — | — |
| 2005 | 76° | 58° | 67° | — | — |
| 2004 | 79° | 55° | 67° | — | — |
| 2003 | 71° | 53° | 62° | — | — |
| 2002 | 75° | 56° | 65° | — | — |
| 2001warmest | 93° | 67° | 80° | — | — |
| 2000 | 80° | 51° | 66° | — | — |
| 1999 | 67° | 51° | 59° | — | — |
| 1998 | 76° | 53° | 64° | — | — |
| 1997 | 90° | 67° | 78° | — | — |
| 1996 | 78° | 50° | 64° | — | — |
| 1995 | 86° | 57° | 72° | — | — |
| 1994 | 76° | 58° | 67° | — | — |
| 1993 | 76° | 61° | 68° | 0.05" | — |
| 1992 | 76° | 59° | 67° | — | — |
| 1991 | 81° | 52° | 66° | — | — |
| 1990 | 67° | 54° | 60° | — | — |
| 1989 | 89° | 55° | 72° | — | — |
| 1988 | 68° | 48° | 58° | — | — |
| 1987 | 71° | 58° | 64° | — | — |
| 1986 | 69° | 59° | 64° | — | — |
| 1985 | 66° | 52° | 59° | — | — |
| 1984 | 77° | 56° | 66° | — | — |
| 1983 | 69° | 56° | 62° | — | — |
| 1982 | 67° | 55° | 61° | — | — |
| 1981 | 80° | 57° | 69° | — | — |
| 1980 | 71° | 53° | 62° | — | — |
| 1979 | 87° | 58° | 72° | — | — |
| 1978 | 85° | 60° | 72° | — | — |
| 1977 | 76° | 58° | 67° | — | — |
| 1976 | 69° | 53° | 61° | — | — |
| 1975 | 72° | 55° | 63° | — | — |
| 1974coldest | 64° | 48° | 56° | — | — |
| 1973 | 76° | 57° | 66° | — | — |
| 1972 | 65° | 54° | 59° | — | — |
| 1971 | 66° | 48° | 57° | — | — |
54 years of data from MOFFETT FED AIRFIELD