Weather on March 15
Sunnyvale, CA
55 Years of Data
Avg High
65°F
Avg Low
47°F
Warmest
2004
68°F avg
Coldest
2002
47°F avg
About This Date
March 15th in Sunnyvale, CA typically brings mild spring weather, with average highs around 65°F and lows near 47°F. Over 56 years of records, the warmest March 15th was in 2004 (68°F average), while the coldest was 2002 (47°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 29% of March 15th dates historically, with the wettest March 15th recording 3.05" of rain. The last decade has been 2.1°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.1°F cooler on this date compared to 20-30 years ago.
Planning for March 15th in Sunnyvale, CA? Great weather for outdoor activities.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 79° | 50° | 64° | — | — |
| 2025 | 59° | 46° | 53° | — | — |
| 2024 | 75° | 54° | 64° | — | — |
| 2023 | 61° | 42° | 51° | — | — |
| 2022 | 70° | 51° | 60° | — | — |
| 2021 | 54° | 42° | 48° | — | — |
| 2020 | 54° | 45° | 49° | 1.27" | — |
| 2019 | 68° | 42° | 55° | — | — |
| 2018 | 58° | 39° | 48° | 0.13" | — |
| 2017 | 65° | 52° | 58° | — | — |
| 2016 | 67° | 44° | 55° | — | — |
| 2015 | 74° | 57° | 65° | — | — |
| 2014 | 79° | 49° | 64° | — | — |
| 2013 | 68° | 47° | 57° | — | — |
| 2012 | 66° | 58° | 62° | — | — |
| 2011 | 70° | 55° | 62° | 0.28" | — |
| 2010 | 70° | 42° | 56° | — | — |
| 2009 | 64° | 51° | 58° | — | — |
| 2008 | 57° | 43° | 50° | 0.38" | — |
| 2007 | 78° | 47° | 62° | — | — |
| 2006 | 59° | 46° | 53° | 0.05" | — |
| 2005 | 73° | 44° | 59° | — | — |
| 2004warmest | 83° | 53° | 68° | — | — |
| 2003 | 64° | 48° | 56° | 0.58" | — |
| 2002coldest | 56° | 39° | 47° | — | — |
| 2001 | 59° | 43° | 51° | — | — |
| 2000 | 74° | 46° | 60° | — | — |
| 1999 | 58° | 43° | 50° | 0.33" | — |
| 1998 | 71° | 52° | 61° | — | — |
| 1997 | 74° | 48° | 61° | — | — |
| 1996 | 70° | 47° | 58° | — | — |
| 1995 | 66° | 45° | 55° | 0.48" | — |
| 1994 | 66° | 49° | 57° | — | — |
| 1993 | 70° | 55° | 62° | — | — |
| 1992 | 62° | 52° | 57° | 0.2" | — |
| 1991 | 59° | 42° | 51° | 0.15" | — |
| 1990 | 69° | 52° | 60° | — | — |
| 1989 | 63° | 43° | 53° | — | — |
| 1988 | 67° | 45° | 56° | — | — |
| 1987 | 60° | 47° | 53° | — | — |
| 1986 | 57° | 47° | 52° | 2.21" | — |
| 1985 | 59° | 48° | 54° | — | — |
| 1984 | 64° | 49° | 56° | 0.25" | — |
| 1983 | 64° | 44° | 54° | — | — |
| 1982 | 56° | 43° | 49° | — | — |
| 1981 | 58° | 47° | 52° | 0.74" | — |
| 1980 | 59° | 48° | 54° | — | — |
| 1979 | 58° | 47° | 52° | 0.3" | — |
| 1978 | 72° | 45° | 58° | — | — |
| 1977 | 55° | 42° | 49° | 3.05" | — |
| 1976 | 67° | 45° | 56° | — | — |
| 1975 | 54° | 45° | 49° | 0.38" | — |
| 1974 | 72° | 48° | 60° | — | — |
| 1973 | 68° | 45° | 56° | — | — |
| 1972 | 80° | 52° | 66° | — | — |
| 1971 | 62° | 44° | 53° | — | — |
56 years of data from MOFFETT FED AIRFIELD