Weather on November 21
Sunnyvale, CA
55 Years of Data
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.
| 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° | — | — |
Sunnyvale, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Sunnyvale, CA Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Sunnyvale, CA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Sunnyvale, CA
Sunnyvale, CA has no months that meet our "pleasant" threshold — every season has tradeoffs.