Weather on March 17
Sunnyvale, CA
55 Years of Data
Avg High
66°F
Avg Low
47°F
Warmest
2026
71°F avg
Coldest
1977
46°F avg
About This Date
March 17th in Sunnyvale, CA typically brings mild spring weather, with average highs around 66°F and lows near 47°F. Over 56 years of records, the warmest March 17th was in 2026 (71°F average), while the coldest was 1977 (46°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 23% of March 17th dates historically, with the wettest March 17th recording 1.98" of rain. The last decade has been 1.3°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.3°F cooler on this date compared to 20-30 years ago.
Planning for March 17th in Sunnyvale, CA? Great weather for outdoor activities.
Warming Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026warmest | 84° | 57° | 71° | — | — |
| 2025 | 57° | 50° | 54° | — | — |
| 2024 | 71° | 48° | 60° | — | — |
| 2023 | 68° | 42° | 55° | — | — |
| 2022 | 67° | 48° | 57° | — | — |
| 2021 | 60° | 38° | 49° | — | — |
| 2020 | 58° | 37° | 47° | 0.1" | — |
| 2019 | 74° | 46° | 60° | — | — |
| 2018 | 56° | 42° | 49° | 0.18" | — |
| 2017 | 77° | 46° | 62° | — | — |
| 2016 | 77° | 49° | 63° | — | — |
| 2015 | 68° | 52° | 60° | — | — |
| 2014 | 69° | 52° | 60° | — | — |
| 2013 | 65° | 44° | 54° | — | — |
| 2012 | 52° | 42° | 47° | 0.03" | — |
| 2011 | 63° | 42° | 52° | — | — |
| 2010 | 72° | 52° | 62° | — | — |
| 2009 | 67° | 51° | 59° | — | — |
| 2008 | 66° | 46° | 56° | — | — |
| 2007 | 62° | 51° | 57° | — | — |
| 2006 | 59° | 47° | 53° | 0.58" | — |
| 2005 | 65° | 50° | 57° | — | — |
| 2004 | 84° | 53° | 69° | — | — |
| 2003 | 62° | 48° | 55° | — | — |
| 2002 | 51° | 41° | 46° | 1.35" | — |
| 2001 | 67° | 46° | 56° | — | — |
| 2000 | 71° | 46° | 59° | — | — |
| 1999 | 57° | 47° | 52° | — | — |
| 1998 | 71° | 53° | 62° | — | — |
| 1997 | 73° | 50° | 62° | 0.36" | — |
| 1996 | 83° | 48° | 65° | — | — |
| 1995 | 67° | 51° | 59° | — | — |
| 1994 | 68° | 44° | 56° | — | — |
| 1993 | 70° | 58° | 64° | 0.23" | — |
| 1992 | 66° | 45° | 55° | — | — |
| 1991 | 54° | 46° | 50° | 1.98" | — |
| 1990 | 66° | 49° | 57° | — | — |
| 1989 | 64° | 44° | 54° | — | — |
| 1988 | 71° | 47° | 59° | — | — |
| 1987 | 67° | 45° | 56° | — | — |
| 1986 | 63° | 46° | 54° | — | — |
| 1985 | 63° | 47° | 55° | 0.53" | — |
| 1984 | 62° | 46° | 54° | — | — |
| 1983 | 58° | 48° | 53° | 0.91" | — |
| 1982 | 52° | 42° | 47° | 1.12" | — |
| 1981 | 66° | 49° | 57° | — | — |
| 1980 | 61° | 43° | 52° | 0.05" | — |
| 1979 | 61° | 46° | 53° | — | — |
| 1978 | 78° | 54° | 66° | — | — |
| 1977coldest | 57° | 36° | 46° | — | — |
| 1976 | 71° | 54° | 62° | — | — |
| 1975 | 62° | 39° | 51° | — | — |
| 1974 | 65° | 54° | 59° | — | — |
| 1973 | 57° | 49° | 53° | 0.05" | — |
| 1972 | 68° | 54° | 61° | — | — |
| 1971 | 66° | 48° | 57° | — | — |
56 years of data from MOFFETT FED AIRFIELD