Weather on September 5
Sunnyvale, CA
55 Years of Data
About This Date
September 5th in Sunnyvale, CA typically brings warm fall weather, with average highs around 80°F and lows near 59°F. Over 55 years of records, the warmest September 5th was in 2022 (86°F average), while the coldest was 1980 (63°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 2% of September 5th dates historically. The last decade has been 3.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.5°F warmer on this date compared to 20-30 years ago.
Planning for September 5th in Sunnyvale, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 72° | 63° | 67° | — | — |
| 2024 | 93° | 63° | 78° | — | — |
| 2023 | 84° | 58° | 71° | — | — |
| 2022warmest | 104° | 68° | 86° | — | — |
| 2021 | 88° | 56° | 72° | — | — |
| 2020 | 98° | 61° | 79° | — | — |
| 2019 | 74° | 61° | 67° | — | — |
| 2018 | 73° | 60° | 67° | — | — |
| 2017 | 85° | 68° | 76° | — | — |
| 2016 | 76° | 52° | 64° | — | — |
| 2015 | 81° | 51° | 66° | — | — |
| 2014 | 76° | 61° | 68° | — | — |
| 2013 | 80° | 59° | 70° | — | — |
| 2012 | 70° | 59° | 64° | — | — |
| 2011 | 71° | 59° | 65° | — | — |
| 2010 | 77° | 54° | 65° | — | — |
| 2009 | 78° | 54° | 66° | — | — |
| 2008 | 97° | 63° | 80° | — | — |
| 2007 | 89° | 58° | 73° | — | — |
| 2006 | 79° | 58° | 68° | — | — |
| 2005 | 77° | 54° | 65° | — | — |
| 2004 | 96° | 63° | 79° | — | — |
| 2003 | 74° | 56° | 65° | — | — |
| 2002 | 75° | 56° | 65° | — | — |
| 2001 | 74° | 57° | 65° | — | — |
| 2000 | 79° | 51° | 65° | 0.15" | — |
| 1999 | 83° | 55° | 69° | — | — |
| 1998 | 82° | 64° | 73° | — | — |
| 1997 | 90° | 65° | 77° | — | — |
| 1996 | 82° | 55° | 69° | — | — |
| 1995 | 89° | 55° | 72° | — | — |
| 1994 | 88° | 60° | 74° | — | — |
| 1993 | 71° | 59° | 65° | — | — |
| 1992 | 85° | 58° | 71° | — | — |
| 1991 | 77° | 63° | 70° | — | — |
| 1990 | 78° | 60° | 69° | — | — |
| 1989 | 74° | 57° | 65° | — | — |
| 1988 | 81° | 61° | 71° | — | — |
| 1987 | 79° | 54° | 66° | — | — |
| 1986 | 74° | 60° | 67° | — | — |
| 1985 | 73° | 59° | 66° | — | — |
| 1984 | 78° | 64° | 71° | — | — |
| 1983 | 85° | 64° | 74° | — | — |
| 1982 | 84° | 58° | 71° | — | — |
| 1981 | 81° | 57° | 69° | — | — |
| 1980coldest | 67° | 59° | 63° | — | — |
| 1979 | 82° | 60° | 71° | — | — |
| 1978 | 78° | 62° | 70° | — | — |
| 1977 | 82° | 59° | 71° | — | — |
| 1976 | 74° | 61° | 67° | — | — |
| 1975 | 76° | 58° | 67° | — | — |
| 1974 | 88° | 58° | 73° | — | — |
| 1973 | 70° | 59° | 64° | — | — |
| 1972 | 74° | 60° | 67° | — | — |
| 1971 | 73° | 58° | 65° | — | — |
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 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
Most pleasant months in Sunnyvale, CA: July, August.