Weather on October 15
Sunnyvale, CA
55 Years of Data
Avg High
75°F
Avg Low
54°F
Warmest
2020
78°F avg
Coldest
1971
54°F avg
About This Date
October 15th in Sunnyvale, CA typically brings pleasant fall weather, with average highs around 75°F and lows near 54°F. Over 55 years of records, the warmest October 15th was in 2020 (78°F average), while the coldest was 1971 (54°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 9% of October 15th dates historically, with the wettest October 15th recording 0.58" of rain. The last decade has been 3.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.6°F warmer on this date compared to 20-30 years ago.
Planning for October 15th in Sunnyvale, CA? Great weather for outdoor activities.
Warming Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 64° | 55° | 60° | — | — |
| 2024 | 81° | 55° | 68° | — | — |
| 2023 | 84° | 62° | 73° | — | — |
| 2022 | 71° | 56° | 63° | — | — |
| 2021 | 84° | 48° | 66° | — | — |
| 2020warmest | 94° | 62° | 78° | — | — |
| 2019 | 72° | 48° | 60° | — | — |
| 2018 | 82° | 55° | 69° | — | — |
| 2017 | 84° | 49° | 66° | — | — |
| 2016 | 74° | 57° | 65° | 0.51" | — |
| 2015 | 78° | 63° | 70° | — | — |
| 2014 | 74° | 60° | 67° | — | — |
| 2013 | 81° | 50° | 65° | — | — |
| 2012 | 75° | 57° | 66° | — | — |
| 2011 | 76° | 60° | 68° | — | — |
| 2010 | 78° | 59° | 69° | — | — |
| 2009 | 78° | 66° | 72° | — | — |
| 2008 | 84° | 51° | 68° | — | — |
| 2007 | 68° | 52° | 60° | 0.03" | — |
| 2006 | 60° | 55° | 58° | — | — |
| 2005 | 67° | 53° | 60° | 0.13" | — |
| 2004 | 74° | 57° | 65° | — | — |
| 2003 | 67° | 48° | 57° | — | — |
| 2002 | 68° | 52° | 60° | — | — |
| 2001 | 83° | 56° | 69° | — | — |
| 2000 | 69° | 54° | 61° | — | — |
| 1999 | 84° | 54° | 69° | — | — |
| 1998 | 69° | 48° | 59° | — | — |
| 1997 | 86° | 53° | 70° | — | — |
| 1996 | 74° | 50° | 62° | — | — |
| 1995 | 82° | 57° | 70° | — | — |
| 1994 | 69° | 47° | 58° | — | — |
| 1993 | 73° | 59° | 66° | 0.58" | — |
| 1992 | 71° | 55° | 63° | — | — |
| 1991 | 79° | 57° | 68° | — | — |
| 1990 | 72° | 52° | 62° | — | — |
| 1989 | 64° | 51° | 58° | — | — |
| 1988 | 85° | 54° | 69° | — | — |
| 1987 | 72° | 57° | 64° | — | — |
| 1986 | 73° | 54° | 63° | — | — |
| 1985 | 81° | 48° | 64° | — | — |
| 1984 | 69° | 52° | 60° | — | — |
| 1983 | 72° | 51° | 61° | — | — |
| 1982 | 65° | 56° | 60° | — | — |
| 1981 | 72° | 46° | 59° | — | — |
| 1980 | 66° | 50° | 58° | — | — |
| 1979 | 79° | 65° | 72° | — | — |
| 1978 | 71° | 58° | 64° | — | — |
| 1977 | 72° | 55° | 63° | — | — |
| 1976 | 75° | 54° | 64° | — | — |
| 1975 | 72° | 48° | 60° | — | — |
| 1974 | 84° | 55° | 70° | — | — |
| 1973 | 66° | 57° | 62° | — | — |
| 1972 | 70° | 58° | 64° | 0.38" | — |
| 1971coldest | 61° | 48° | 54° | — | — |
55 years of data from MOFFETT FED AIRFIELD