Weather on August 18
Chico, CA
55 Years of Data
Avg High
92°F
Avg Low
60°F
Warmest
2022
87°F avg
Coldest
1995
67°F avg
About This Date
August 18th in Chico, CA typically brings hot summer weather, with average highs around 92°F and lows near 60°F — a 32°F daily swing. Over 55 years of records, the warmest August 18th was in 2022 (87°F average), while the coldest was 1995 (67°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 5% of August 18th dates historically, with the wettest August 18th recording 0.97" of rain. 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 18th in Chico, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 83° | 55° | 69° | — | — |
| 2024 | 81° | 59° | 70° | — | — |
| 2023 | 93° | 75° | 84° | — | — |
| 2022warmest | 107° | 67° | 87° | — | — |
| 2021 | 89° | 68° | 79° | — | — |
| 2020 | 101° | 71° | 86° | — | — |
| 2019 | 87° | 64° | 76° | — | — |
| 2018 | 100° | 60° | 80° | — | — |
| 2017 | 93° | 65° | 79° | — | — |
| 2016 | 96° | 63° | 79° | — | — |
| 2015 | 105° | 57° | 81° | — | — |
| 2014 | 99° | 56° | 77° | — | — |
| 2013 | 98° | 66° | 82° | — | — |
| 2012 | 98° | 71° | 85° | — | — |
| 2011 | 96° | 58° | 77° | — | — |
| 2010 | 87° | 53° | 70° | — | — |
| 2009 | 98° | 57° | 78° | — | — |
| 2008 | 106° | 59° | 82° | — | — |
| 2007 | 91° | 59° | 75° | — | — |
| 2006 | 94° | 58° | 76° | — | — |
| 2005 | 96° | 57° | 77° | — | — |
| 2004 | 97° | 66° | 81° | — | — |
| 2003 | 100° | 55° | 78° | — | — |
| 2002 | 93° | 60° | 77° | — | — |
| 2001 | 95° | 59° | 77° | — | — |
| 2000 | 97° | 58° | 77° | — | — |
| 1999 | 95° | 56° | 75° | — | — |
| 1998 | 81° | 58° | 69° | — | — |
| 1997 | 83° | 56° | 69° | — | — |
| 1996 | 91° | 58° | 74° | — | — |
| 1995coldest | 81° | 54° | 67° | — | — |
| 1994 | 98° | 59° | 79° | — | — |
| 1993 | 90° | 57° | 73° | — | — |
| 1992 | 104° | 58° | 81° | — | — |
| 1991 | 93° | 54° | 73° | — | — |
| 1990 | 86° | 59° | 73° | — | — |
| 1989 | 82° | 58° | 70° | — | — |
| 1988 | 96° | 57° | 77° | — | — |
| 1987 | 97° | 60° | 78° | — | — |
| 1986 | 91° | 54° | 72° | — | — |
| 1985 | 78° | 59° | 69° | 0.2" | — |
| 1984 | 100° | 61° | 80° | — | — |
| 1983 | 99° | 62° | 80° | — | — |
| 1982 | 95° | 60° | 78° | — | — |
| 1981 | 100° | 59° | 80° | — | — |
| 1980 | 79° | 61° | 70° | — | — |
| 1979 | 93° | — | — | — | — |
| 1978 | 81° | 60° | 70° | — | — |
| 1977 | 79° | 64° | 71° | — | — |
| 1976 | 78° | 57° | 68° | 0.89" | — |
| 1975 | 76° | 60° | 68° | 0.97" | — |
| 1974 | 91° | 61° | 76° | — | — |
| 1973 | 91° | 55° | 73° | — | — |
| 1972 | 88° | 54° | 71° | — | — |
| 1971 | 99° | 57° | 78° | — | — |
55 years of data from CHICO UNIV FARM