Weather on October 17
Sunnyvale, CA
55 Years of Data
Avg High
75°F
Avg Low
53°F
Warmest
1988
78°F avg
Coldest
1971
51°F avg
About This Date
October 17th in Sunnyvale, CA typically brings pleasant fall weather, with average highs around 75°F and lows near 53°F. Over 55 years of records, the warmest October 17th was in 1988 (78°F average), while the coldest was 1971 (51°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 13% of October 17th dates historically. The last decade has been 1.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.1°F warmer on this date compared to 20-30 years ago.
Planning for October 17th in Sunnyvale, CA? Great weather for outdoor activities.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 75° | 52° | 64° | — | — |
| 2024 | 75° | 54° | 64° | — | — |
| 2023 | 81° | 63° | 72° | — | — |
| 2022 | 75° | 52° | 63° | — | — |
| 2021 | 77° | 51° | 64° | — | — |
| 2020 | 95° | 58° | 76° | — | — |
| 2019 | 70° | 54° | 62° | 0.03" | — |
| 2018 | 72° | 50° | 61° | — | — |
| 2017 | 77° | 55° | 66° | — | — |
| 2016 | 70° | 54° | 62° | — | — |
| 2015 | 73° | 62° | 68° | — | — |
| 2014 | 77° | 52° | 64° | — | — |
| 2013 | 81° | 50° | 65° | — | — |
| 2012 | 87° | 56° | 71° | — | — |
| 2011 | 87° | 58° | 72° | — | — |
| 2010 | 59° | 55° | 57° | 0.13" | — |
| 2009 | 78° | 58° | 68° | 0.03" | — |
| 2008 | 84° | 54° | 69° | — | — |
| 2007 | 67° | 49° | 58° | — | — |
| 2006 | 73° | 49° | 61° | — | — |
| 2005 | 84° | 51° | 68° | — | — |
| 2004 | 68° | 56° | 62° | 0.43" | — |
| 2003 | 80° | 52° | 66° | 0.03" | — |
| 2002 | 65° | 52° | 58° | — | — |
| 2001 | 71° | 57° | 64° | — | — |
| 2000 | 73° | 53° | 63° | — | — |
| 1999 | 83° | 55° | 69° | — | — |
| 1998 | 76° | 50° | 63° | — | — |
| 1997 | 84° | 55° | 70° | — | — |
| 1996 | 74° | 46° | 60° | — | — |
| 1995 | 77° | 52° | 64° | — | — |
| 1994 | 75° | 47° | 61° | — | — |
| 1993 | 70° | 50° | 60° | — | — |
| 1992 | 79° | 53° | 66° | — | — |
| 1991 | 73° | 56° | 64° | — | — |
| 1990 | 80° | 51° | 66° | — | — |
| 1989 | 83° | 53° | 68° | — | — |
| 1988warmest | 93° | 63° | 78° | — | — |
| 1987 | 75° | 56° | 65° | — | — |
| 1986 | 69° | 55° | 62° | 0.03" | — |
| 1985 | 69° | 52° | 60° | — | — |
| 1984 | 63° | 48° | 55° | — | — |
| 1983 | 72° | 51° | 61° | — | — |
| 1982 | 70° | 55° | 62° | — | — |
| 1981 | 73° | 49° | 61° | — | — |
| 1980 | 72° | 47° | 59° | — | — |
| 1979 | 69° | 57° | 63° | — | — |
| 1978 | 73° | 57° | 65° | — | — |
| 1977 | 67° | 53° | 60° | — | — |
| 1976 | 79° | 54° | 66° | — | — |
| 1975 | 65° | 53° | 59° | — | — |
| 1974 | 86° | 58° | 72° | — | — |
| 1973 | 79° | 57° | 68° | — | — |
| 1972 | 67° | 58° | 62° | 0.38" | — |
| 1971coldest | 61° | 42° | 51° | — | — |
55 years of data from MOFFETT FED AIRFIELD