Weather on April 20
Sunnyvale, CA
55 Years of Data
Avg High
69°F
Avg Low
50°F
Warmest
2009
75°F avg
Coldest
2001
50°F avg
About This Date
April 20th in Sunnyvale, CA typically brings mild spring weather, with average highs around 69°F and lows near 50°F. Over 55 years of records, the warmest April 20th was in 2009 (75°F average), while the coldest was 2001 (50°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 27% of April 20th dates historically, with the wettest April 20th recording 1.09" of rain. The last decade has been 1.9°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.9°F warmer on this date compared to 20-30 years ago.
Planning for April 20th in Sunnyvale, CA? Great weather for outdoor activities.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 68° | 54° | 61° | — | — |
| 2024 | 74° | 52° | 63° | — | — |
| 2023 | 71° | 45° | 58° | — | — |
| 2022 | 73° | 47° | 60° | 0.13" | — |
| 2021 | 65° | 47° | 56° | — | — |
| 2020 | 65° | 54° | 59° | — | — |
| 2019 | 64° | 52° | 58° | — | — |
| 2018 | 74° | 47° | 60° | — | — |
| 2017 | 69° | 53° | 61° | 0.28" | — |
| 2016 | 76° | 49° | 62° | — | — |
| 2015 | 65° | 54° | 59° | — | — |
| 2014 | 80° | 51° | 66° | — | — |
| 2013 | 80° | 52° | 66° | — | — |
| 2012 | 85° | 57° | 71° | — | — |
| 2011 | 70° | 56° | 63° | — | — |
| 2010 | 60° | 49° | 54° | 1.09" | — |
| 2009warmest | 93° | 58° | 75° | — | — |
| 2008 | 59° | 43° | 51° | — | — |
| 2007 | 64° | 47° | 55° | 0.1" | — |
| 2006 | 64° | 49° | 56° | — | — |
| 2005 | 63° | 46° | 54° | — | — |
| 2004 | 67° | 56° | 61° | 0.1" | — |
| 2003 | 62° | 49° | 55° | — | — |
| 2002 | 64° | 44° | 54° | — | — |
| 2001coldest | 56° | 44° | 50° | 1.07" | — |
| 2000 | 69° | 50° | 60° | — | — |
| 1999 | 67° | 50° | 58° | — | — |
| 1998 | 76° | 52° | 64° | — | — |
| 1997 | 76° | 62° | 69° | — | — |
| 1996 | 63° | 45° | 54° | 0.1" | — |
| 1995 | 62° | 49° | 55° | 0.08" | — |
| 1994 | 69° | 49° | 59° | — | — |
| 1993 | 74° | 51° | 62° | — | — |
| 1992 | 76° | 57° | 66° | — | — |
| 1991 | 68° | 52° | 60° | 0.13" | — |
| 1990 | 69° | 56° | 62° | — | — |
| 1989 | 75° | 58° | 66° | — | — |
| 1988 | 66° | 51° | 59° | 0.97" | — |
| 1987 | 81° | 50° | 65° | — | — |
| 1986 | 84° | 45° | 64° | — | — |
| 1985 | 60° | 47° | 53° | 0.13" | — |
| 1984 | 67° | 47° | 57° | — | — |
| 1983 | 66° | 54° | 60° | 0.13" | — |
| 1982 | 78° | 53° | 66° | — | — |
| 1981 | 67° | 50° | 58° | — | — |
| 1980 | 69° | 49° | 59° | 0.13" | — |
| 1979 | 67° | 44° | 55° | — | — |
| 1978 | 63° | 48° | 55° | 0.2" | — |
| 1977 | 66° | 49° | 57° | — | — |
| 1976 | 76° | 48° | 62° | — | — |
| 1975 | 72° | 45° | 58° | — | — |
| 1974 | 73° | 46° | 60° | — | — |
| 1973 | 69° | 50° | 60° | — | — |
| 1972 | 61° | 41° | 51° | — | — |
| 1971 | 56° | 46° | 51° | 0.08" | — |
55 years of data from MOFFETT FED AIRFIELD