Weather on December 20
Modesto, CA
55 Years of Data
Avg High
53°F
Avg Low
38°F
Warmest
1981
56°F avg
Coldest
1985
34°F avg
About This Date
December 20th in Modesto, CA typically brings cool winter weather, with average highs around 53°F and lows near 38°F. Over 55 years of records, the warmest December 20th was in 1981 (56°F average), while the coldest was 1985 (34°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 24% of December 20th dates historically, with the wettest December 20th recording 2.26" 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 20th in Modesto, 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 | 61° | 51° | 56° | — | — |
| 2024 | 55° | 48° | 52° | — | — |
| 2023 | 60° | 52° | 56° | 1.19" | — |
| 2022 | 51° | 37° | 44° | — | — |
| 2021 | 42° | 39° | 41° | — | — |
| 2020 | 52° | 34° | 43° | — | — |
| 2019 | 60° | 40° | 50° | — | — |
| 2018 | 57° | 47° | 52° | — | — |
| 2017 | 56° | 41° | 48° | 0.13" | — |
| 2016 | 58° | 30° | 44° | — | — |
| 2015 | 53° | 37° | 45° | — | — |
| 2014 | 59° | 53° | 56° | 0.46" | — |
| 2013 | 56° | 35° | 45° | — | — |
| 2012 | 54° | 29° | 41° | — | — |
| 2011 | 51° | 31° | 41° | — | — |
| 2010 | 51° | 44° | 48° | 0.48" | — |
| 2009 | 56° | 40° | 48° | — | — |
| 2008 | 49° | 35° | 42° | — | — |
| 2007 | 58° | 45° | 51° | 0.66" | — |
| 2006 | 54° | 30° | 42° | — | — |
| 2005 | 64° | 47° | 55° | — | — |
| 2004 | 44° | 38° | 41° | — | — |
| 2003 | 57° | 47° | 52° | 0.15" | — |
| 2002 | 51° | 43° | 47° | 0.3" | — |
| 2001 | 55° | 45° | 50° | 1.55" | — |
| 2000 | 57° | 33° | 45° | — | — |
| 1999 | 62° | 31° | 46° | — | — |
| 1998 | 43° | 29° | 36° | 0.08" | — |
| 1997 | 55° | 38° | 46° | — | — |
| 1996 | 42° | 37° | 40° | — | — |
| 1995 | 58° | 41° | 49° | — | — |
| 1994 | 48° | 44° | 46° | — | — |
| 1993 | 40° | 36° | 38° | — | — |
| 1992 | 60° | 36° | 48° | — | — |
| 1991 | 55° | 36° | 45° | — | — |
| 1990 | 45° | 31° | 38° | — | — |
| 1989 | 40° | 35° | 37° | — | — |
| 1988 | 52° | 43° | 47° | 2.26" | — |
| 1987 | 52° | 35° | 43° | — | — |
| 1986 | 58° | 40° | 49° | — | — |
| 1985coldest | 38° | 31° | 34° | — | — |
| 1984 | 54° | 35° | 44° | — | — |
| 1983 | 55° | 37° | 46° | — | — |
| 1982 | 57° | 44° | 51° | 0.33" | — |
| 1981warmest | 65° | 48° | 56° | 0.15" | — |
| 1980 | 54° | 39° | 46° | — | — |
| 1979 | 52° | 41° | 46° | 0.15" | — |
| 1978 | 49° | 29° | 39° | — | — |
| 1977 | 56° | 28° | 42° | — | — |
| 1976 | 60° | 30° | 45° | — | — |
| 1975 | 61° | 30° | 45° | — | — |
| 1974 | 46° | 37° | 42° | — | — |
| 1973 | 52° | 45° | 48° | — | — |
| 1972 | 56° | 48° | 52° | — | — |
| 1971 | 45° | 29° | 37° | — | — |
55 years of data from MODESTO AP