Weather on December 18
Chico, CA
55 Years of Data
Avg High
56°F
Avg Low
36°F
Warmest
2024
55°F avg
Coldest
1985
33°F avg
About This Date
December 18th in Chico, CA typically brings cool winter weather, with average highs around 56°F and lows near 36°F. Over 53 years of records, the warmest December 18th was in 2024 (55°F average), while the coldest was 1985 (33°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 23% of December 18th dates historically, with the wettest December 18th recording 3.1" of rain. The last decade has been 2.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.8°F warmer on this date compared to 20-30 years ago.
Planning for December 18th in Chico, CA? Bring layers as temperatures can vary throughout the day.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 52° | 48° | 50° | — | — |
| 2024warmest | 61° | 50° | 55° | — | — |
| 2023 | 55° | 46° | 51° | — | — |
| 2022 | 51° | 40° | 45° | — | — |
| 2021 | 52° | 32° | 42° | — | — |
| 2020 | 63° | 43° | 53° | — | — |
| 2018 | 55° | 47° | 51° | — | — |
| 2017 | 66° | 36° | 51° | — | — |
| 2016 | 51° | 37° | 44° | — | — |
| 2015 | 45° | 42° | 43° | — | — |
| 2014 | 55° | 48° | 52° | 0.53" | — |
| 2013 | 60° | 35° | 48° | — | — |
| 2012 | 59° | 38° | 48° | 1.02" | — |
| 2011 | 59° | 33° | 46° | — | — |
| 2010 | 55° | 50° | 53° | — | — |
| 2009 | 59° | 35° | 47° | — | — |
| 2008 | 52° | 20° | 36° | — | — |
| 2007 | 51° | 48° | 50° | 3.1" | — |
| 2006 | 58° | 24° | 41° | — | — |
| 2005 | 57° | 40° | 48° | — | — |
| 2004 | 59° | 37° | 48° | — | — |
| 2003 | 54° | 31° | 42° | — | — |
| 2002 | 61° | 36° | 48° | 0.03" | — |
| 2001 | 48° | 43° | 45° | 0.03" | — |
| 2000 | 66° | 29° | 47° | — | — |
| 1999 | 57° | 32° | 45° | — | — |
| 1998 | 64° | 30° | 47° | — | — |
| 1997 | 48° | 44° | 46° | 0.41" | — |
| 1996 | 64° | 31° | 47° | — | — |
| 1995 | 57° | 32° | 45° | — | — |
| 1994 | 47° | 42° | 44° | 0.18" | — |
| 1993 | 55° | 29° | 42° | — | — |
| 1992 | 52° | 26° | 39° | — | — |
| 1991 | 50° | 48° | 49° | 1.24" | — |
| 1990 | 60° | 30° | 45° | — | — |
| 1989 | 57° | 25° | 41° | — | — |
| 1988 | 59° | 31° | 45° | — | — |
| 1987 | 59° | 30° | 45° | — | — |
| 1986 | 61° | 36° | 48° | 0.56" | — |
| 1985coldest | 40° | 26° | 33° | — | — |
| 1984 | 51° | 26° | 39° | — | — |
| 1983 | 56° | 42° | 49° | — | — |
| 1982 | 55° | 35° | 45° | — | — |
| 1981 | 56° | 38° | 47° | 0.41" | — |
| 1979 | 62° | 29° | 45° | — | — |
| 1978 | 48° | 38° | 43° | 2.46" | — |
| 1977 | 55° | 40° | 47° | 0.15" | — |
| 1976 | 66° | 28° | 47° | — | — |
| 1975 | 58° | 43° | 50° | — | — |
| 1974 | 59° | 35° | 47° | — | — |
| 1973 | 62° | 32° | 47° | — | — |
| 1972 | 50° | 42° | 46° | — | — |
| 1971 | 52° | 27° | 39° | — | — |
53 years of data from CHICO UNIV FARM