Weather on November 21
Sunnyvale, CA
55 Years of Data
Avg High
63°F
Avg Low
46°F
Warmest
2024
66°F avg
Coldest
1985
47°F avg
About This Date
November 21st in Sunnyvale, CA typically brings mild fall weather, with average highs around 63°F and lows near 46°F. Over 55 years of records, the warmest November 21st was in 2024 (66°F average), while the coldest was 1985 (47°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 33% of November 21st dates historically, with the wettest November 21st recording 1.52" of rain. The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
Planning for November 21st in Sunnyvale, CA? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 66° | 46° | 56° | — | — |
| 2024warmest | 69° | 63° | 66° | — | — |
| 2023 | 68° | 44° | 56° | — | — |
| 2022 | 67° | 39° | 53° | — | — |
| 2021 | 70° | 42° | 56° | — | — |
| 2020 | 64° | 38° | 51° | — | — |
| 2019 | 66° | 45° | 55° | — | — |
| 2018 | 64° | 55° | 60° | 0.74" | — |
| 2017 | 73° | 52° | 62° | — | — |
| 2016 | 63° | 48° | 55° | — | — |
| 2015 | 70° | 47° | 58° | — | — |
| 2014 | 64° | 48° | 56° | — | — |
| 2013 | 63° | 49° | 56° | — | — |
| 2012 | 66° | 49° | 57° | 0.81" | — |
| 2011 | 64° | 45° | 54° | — | — |
| 2010 | 55° | 43° | 49° | 0.53" | — |
| 2009 | 57° | 38° | 47° | — | — |
| 2008 | 67° | 48° | 57° | — | — |
| 2007 | 65° | 42° | 53° | — | — |
| 2006 | 67° | 50° | 58° | — | — |
| 2005 | 72° | 42° | 57° | — | — |
| 2004 | 62° | 43° | 52° | — | — |
| 2003 | 58° | 41° | 49° | 0.03" | — |
| 2002 | 69° | 49° | 59° | — | — |
| 2001 | 65° | 58° | 61° | 0.03" | — |
| 2000 | 56° | 42° | 49° | 0.15" | — |
| 1999 | 59° | 47° | 53° | 0.25" | — |
| 1998 | 68° | 45° | 56° | 0.38" | — |
| 1997 | 59° | 44° | 52° | — | — |
| 1996 | 65° | 56° | 60° | 0.18" | — |
| 1995 | 71° | 54° | 62° | — | — |
| 1994 | 57° | 49° | 53° | — | — |
| 1993 | 59° | 44° | 52° | 0.1" | — |
| 1992 | 68° | 45° | 56° | 0.08" | — |
| 1991 | 64° | 48° | 56° | — | — |
| 1990 | 61° | 48° | 54° | 0.18" | — |
| 1989 | 59° | 49° | 54° | — | — |
| 1988 | 62° | 43° | 52° | — | — |
| 1987 | 60° | 48° | 54° | — | — |
| 1986 | 64° | 52° | 58° | — | — |
| 1985coldest | 54° | 41° | 47° | — | — |
| 1984 | 59° | 44° | 52° | 0.03" | — |
| 1983 | 56° | 42° | 49° | — | — |
| 1982 | 59° | 42° | 51° | — | — |
| 1981 | 68° | 58° | 63° | 1.52" | — |
| 1980 | 60° | 42° | 51° | 0.15" | — |
| 1979 | 61° | 37° | 49° | — | — |
| 1978 | 61° | 49° | 55° | 1.19" | — |
| 1977 | 60° | 48° | 54° | 1.19" | — |
| 1976 | 60° | 49° | 54° | — | — |
| 1975 | 59° | 41° | 50° | — | — |
| 1974 | 63° | 52° | 57° | 0.64" | — |
| 1973 | 58° | 42° | 50° | — | — |
| 1972 | 58° | 44° | 51° | — | — |
| 1971 | 59° | 42° | 51° | — | — |
55 years of data from MOFFETT FED AIRFIELD