Weather on August 21
Chico, CA
55 Years of Data
Avg High
91°F
Avg Low
60°F
Warmest
2022
88°F avg
Coldest
1979
66°F avg
About This Date
August 21st in Chico, CA typically brings hot summer weather, with average highs around 91°F and lows near 60°F — a 31°F daily swing. Over 55 years of records, the warmest August 21st was in 2022 (88°F average), while the coldest was 1979 (66°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 4% of August 21st 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 August 21st in Chico, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 99° | 78° | 88° | — | — |
| 2024 | 94° | 55° | 74° | — | — |
| 2023 | 78° | 64° | 71° | — | — |
| 2022warmest | 98° | 78° | 88° | — | — |
| 2021 | 79° | 60° | 69° | — | — |
| 2020 | 87° | 60° | 74° | — | — |
| 2019 | 89° | 69° | 79° | — | — |
| 2018 | 98° | 59° | 79° | — | — |
| 2017 | 91° | 64° | 78° | — | — |
| 2016 | 90° | 65° | 77° | — | — |
| 2015 | 88° | 57° | 72° | — | — |
| 2014 | 85° | 58° | 71° | — | — |
| 2013 | 98° | 67° | 82° | — | — |
| 2012 | 99° | 60° | 79° | — | — |
| 2011 | 89° | 55° | 72° | — | — |
| 2010 | 86° | 59° | 73° | — | — |
| 2009 | 98° | 57° | 78° | — | — |
| 2008 | 92° | 63° | 77° | — | — |
| 2007 | 93° | 66° | 80° | — | — |
| 2006 | 97° | 59° | 78° | — | — |
| 2005 | 98° | 58° | 78° | — | — |
| 2004 | 95° | 65° | 80° | — | — |
| 2003 | 100° | 69° | 85° | — | — |
| 2002 | 89° | 57° | 73° | — | — |
| 2001 | 83° | 53° | 68° | — | — |
| 2000 | 87° | 53° | 70° | — | — |
| 1999 | 97° | 62° | 79° | — | — |
| 1998 | 86° | 54° | 70° | — | — |
| 1997 | 80° | 61° | 70° | 0.2" | — |
| 1996 | 84° | 53° | 69° | — | — |
| 1995 | 102° | 65° | 83° | — | — |
| 1994 | 95° | 53° | 74° | — | — |
| 1993 | 94° | 56° | 75° | — | — |
| 1992 | 102° | 57° | 80° | — | — |
| 1991 | 94° | 54° | 74° | — | — |
| 1990 | 87° | 59° | 73° | — | — |
| 1989 | 90° | 57° | 73° | — | — |
| 1988 | 98° | 66° | 82° | — | — |
| 1987 | 83° | 55° | 69° | — | — |
| 1986 | 100° | 59° | 80° | — | — |
| 1985 | 86° | 53° | 70° | — | — |
| 1984 | 92° | 62° | 77° | — | — |
| 1983 | 85° | 63° | 74° | 0.05" | — |
| 1982 | 95° | 67° | 81° | — | — |
| 1981 | 86° | 54° | 70° | — | — |
| 1980 | 89° | 62° | 76° | — | — |
| 1979coldest | 73° | 59° | 66° | — | — |
| 1978 | 88° | 60° | 74° | — | — |
| 1977 | 93° | 58° | 75° | — | — |
| 1976 | 88° | — | — | — | — |
| 1975 | 84° | 59° | 72° | — | — |
| 1974 | 94° | 55° | 74° | — | — |
| 1973 | 94° | 65° | 79° | — | — |
| 1972 | 94° | 60° | 77° | — | — |
| 1971 | 90° | 60° | 75° | — | — |
55 years of data from CHICO UNIV FARM