Weather on September 1
Chico, CA
55 Years of Data
Avg High
92°F
Avg Low
59°F
Warmest
2022
91°F avg
Coldest
1999
65°F avg
About This Date
September 1st in Chico, CA typically brings hot fall weather, with average highs around 92°F and lows near 59°F — a 33°F daily swing. Over 55 years of records, the warmest September 1st was in 2022 (91°F average), while the coldest was 1999 (65°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 4% of September 1st dates historically. The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
Planning for September 1st in Chico, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 98° | 77° | 88° | — | — |
| 2024 | 91° | 74° | 82° | — | — |
| 2023 | 69° | 60° | 65° | — | — |
| 2022warmest | 102° | 81° | 91° | — | — |
| 2021 | 84° | 60° | 72° | — | — |
| 2020 | 98° | 61° | 79° | — | — |
| 2019 | 93° | 76° | 84° | — | — |
| 2018 | 90° | 55° | 72° | — | — |
| 2017 | 103° | 57° | 80° | — | — |
| 2016 | 88° | 56° | 72° | — | — |
| 2015 | 94° | 59° | 76° | — | — |
| 2014 | 97° | 76° | 86° | — | — |
| 2013 | 85° | 68° | 76° | — | — |
| 2012 | 84° | 49° | 66° | — | — |
| 2011 | 92° | 58° | 75° | — | — |
| 2010 | 94° | 49° | 71° | — | — |
| 2009 | 88° | 57° | 72° | — | — |
| 2008 | 89° | 59° | 74° | — | — |
| 2007 | 101° | 67° | 84° | — | — |
| 2006 | 98° | 54° | 76° | — | — |
| 2005 | 102° | 56° | 79° | — | — |
| 2004 | 94° | 59° | 76° | — | — |
| 2003 | 99° | 64° | 81° | — | — |
| 2002 | 102° | 61° | 81° | — | — |
| 2001 | 94° | 62° | 78° | — | — |
| 2000 | 80° | 60° | 70° | 0.03" | — |
| 1999coldest | 85° | 45° | 65° | — | — |
| 1998 | 108° | 62° | 85° | — | — |
| 1997 | 89° | 56° | 72° | — | — |
| 1996 | 94° | 57° | 75° | — | — |
| 1995 | 93° | 55° | 74° | — | — |
| 1994 | 90° | 55° | 72° | — | — |
| 1993 | 91° | 58° | 74° | — | — |
| 1992 | 84° | 59° | 72° | — | — |
| 1991 | 93° | 52° | 72° | — | — |
| 1990 | 91° | 61° | 76° | — | — |
| 1989 | 90° | 55° | 72° | — | — |
| 1988 | 100° | 60° | 80° | — | — |
| 1987 | 99° | 64° | 81° | — | — |
| 1986 | 99° | 56° | 77° | — | — |
| 1985 | 85° | 62° | 73° | — | — |
| 1984 | 81° | 54° | 67° | — | — |
| 1983 | 77° | 59° | 68° | 0.13" | — |
| 1982 | 93° | 53° | 73° | — | — |
| 1981 | 96° | 57° | 77° | — | — |
| 1980 | — | 54° | — | — | — |
| 1979 | 87° | 58° | 72° | — | — |
| 1978 | 90° | 59° | 74° | — | — |
| 1977 | 95° | 55° | 75° | — | — |
| 1976 | 104° | 56° | 80° | — | — |
| 1975 | 84° | 52° | 68° | — | — |
| 1974 | 92° | 60° | 76° | — | — |
| 1973 | 90° | 55° | 72° | — | — |
| 1972 | 97° | 60° | 78° | — | — |
| 1971 | 85° | 54° | 69° | — | — |
55 years of data from CHICO UNIV FARM