Weather on September 8
Santa Rosa, CA
55 Years of Data
Avg High
84°F
Avg Low
53°F
Warmest
2020
85°F avg
Coldest
1985
58°F avg
About This Date
September 8th in Santa Rosa, CA typically brings warm fall weather, with average highs around 84°F and lows near 53°F — a 31°F daily swing. Over 55 years of records, the warmest September 8th was in 2020 (85°F average), while the coldest was 1985 (58°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 4% of September 8th dates historically, with the wettest September 8th recording 1.96" of rain. The last decade has been 5.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.0°F warmer on this date compared to 20-30 years ago.
Planning for September 8th in Santa Rosa, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 78° | 56° | 67° | — | — |
| 2024 | 96° | 51° | 74° | — | — |
| 2023 | 86° | 50° | 68° | — | — |
| 2022 | 105° | 61° | 83° | — | — |
| 2021 | 96° | 59° | 78° | — | — |
| 2020warmest | 110° | 60° | 85° | — | — |
| 2019 | 87° | 52° | 69° | — | — |
| 2018 | 91° | 48° | 70° | — | — |
| 2017 | 84° | 60° | 72° | — | — |
| 2016 | 70° | 54° | 62° | — | — |
| 2015 | 99° | 68° | 83° | — | — |
| 2014 | 69° | 53° | 61° | — | — |
| 2013 | 88° | 52° | 70° | — | — |
| 2012 | 76° | 51° | 63° | — | — |
| 2011 | 79° | 49° | 64° | — | — |
| 2010 | 71° | 55° | 63° | — | — |
| 2009 | 88° | 48° | 68° | — | — |
| 2008 | 77° | 44° | 61° | — | — |
| 2007 | 74° | 54° | 64° | — | — |
| 2006 | 67° | 53° | 60° | — | — |
| 2005 | 72° | 53° | 62° | — | — |
| 2004 | 98° | 52° | 75° | — | — |
| 2003 | 80° | 50° | 65° | — | — |
| 2002 | 82° | 48° | 65° | — | — |
| 2001 | 76° | 50° | 63° | — | — |
| 2000 | 80° | — | — | — | — |
| 1999 | 74° | 55° | 64° | — | — |
| 1998 | 91° | 55° | 73° | — | — |
| 1997 | 86° | 58° | 72° | — | — |
| 1996 | 91° | 50° | 71° | — | — |
| 1995 | 80° | 54° | 67° | — | — |
| 1994 | 79° | 49° | 64° | — | — |
| 1993 | 92° | 50° | 71° | — | — |
| 1992 | 87° | 52° | 69° | — | — |
| 1991 | 77° | 53° | 65° | — | — |
| 1990 | 87° | 51° | 69° | — | — |
| 1989 | 71° | 55° | 63° | — | — |
| 1988 | 77° | 50° | 64° | — | — |
| 1987 | 83° | 48° | 65° | — | — |
| 1986 | 68° | 49° | 58° | — | — |
| 1985coldest | 65° | 51° | 58° | 1.96" | — |
| 1984 | 101° | 63° | 82° | — | — |
| 1983 | 81° | 59° | 70° | — | — |
| 1982 | 93° | 54° | 73° | — | — |
| 1981 | 78° | 51° | 65° | — | — |
| 1980 | 72° | 53° | 62° | — | — |
| 1979 | 92° | 59° | 75° | — | — |
| 1978 | 85° | 45° | 65° | 0.1" | — |
| 1977 | 95° | 48° | 72° | — | — |
| 1976 | 102° | 52° | 77° | — | — |
| 1975 | 71° | 51° | 61° | — | — |
| 1974 | 87° | 51° | 69° | — | — |
| 1973 | 98° | 52° | 75° | — | — |
| 1972 | 77° | 54° | 65° | — | — |
| 1971 | 96° | 49° | 72° | — | — |
55 years of data from SANTA ROSA