Weather on January 20
El Cajon, CA
55 Years of Data
Avg High
68°F
Avg Low
43°F
Warmest
2000
65°F avg
Coldest
1973
45°F avg
About This Date
January 20th in El Cajon, CA typically brings mild winter weather, with average highs around 68°F and lows near 43°F — a 25°F daily swing. Over 56 years of records, the warmest January 20th was in 2000 (65°F average), while the coldest was 1973 (45°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 16% of January 20th dates historically, with the wettest January 20th recording 2.9" of rain. The last decade has been 1.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.5°F warmer on this date compared to 20-30 years ago.
Planning for January 20th in El Cajon, CA? Great weather for outdoor activities.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 78° | 41° | 60° | — | — |
| 2025 | 71° | 44° | 58° | — | — |
| 2024 | 62° | 50° | 56° | 0.91" | — |
| 2023 | 62° | 43° | 52° | 0.25" | — |
| 2022 | 76° | 41° | 58° | — | — |
| 2021 | 69° | 57° | 63° | — | — |
| 2020 | 65° | 48° | 56° | — | — |
| 2019 | 76° | 45° | 60° | — | — |
| 2018 | 60° | 51° | 56° | 0.05" | — |
| 2017 | 59° | 52° | 55° | 2.9" | — |
| 2016 | 71° | 52° | 61° | — | — |
| 2015 | 68° | 46° | 57° | — | — |
| 2014 | 82° | 40° | 61° | — | — |
| 2013 | 80° | 38° | 59° | — | — |
| 2012 | 63° | 42° | 52° | — | — |
| 2011 | 79° | 47° | 63° | — | — |
| 2010 | 61° | 46° | 53° | 0.08" | — |
| 2009 | 87° | 42° | 65° | — | — |
| 2008 | 64° | 35° | 50° | — | — |
| 2007 | 61° | 35° | 48° | — | — |
| 2006 | 69° | 40° | 54° | — | — |
| 2005 | — | 48° | — | — | — |
| 2004 | 61° | 52° | 56° | — | — |
| 2003 | 68° | 45° | 56° | — | — |
| 2002 | 71° | 33° | 52° | — | — |
| 2001 | 75° | 38° | 56° | — | — |
| 2000warmest | 77° | 54° | 65° | — | — |
| 1999 | 61° | 53° | 57° | 0.1" | — |
| 1998 | 63° | 46° | 54° | — | — |
| 1997 | 66° | 41° | 54° | — | — |
| 1996 | 68° | — | — | — | — |
| 1995 | 63° | 38° | 50° | — | — |
| 1994 | 76° | 39° | 57° | — | — |
| 1993 | 63° | 46° | 54° | — | — |
| 1992 | 69° | 38° | 53° | — | — |
| 1991 | 80° | 41° | 61° | — | — |
| 1990 | 66° | 36° | 51° | — | — |
| 1989 | 78° | 39° | 59° | — | — |
| 1988 | 63° | 29° | 46° | — | — |
| 1987 | 65° | 39° | 52° | — | — |
| 1986 | 64° | 48° | 56° | — | — |
| 1985 | 64° | 49° | 56° | — | — |
| 1984 | 62° | 39° | 51° | — | — |
| 1983 | 60° | 36° | 48° | 0.03" | — |
| 1982 | 67° | 43° | 55° | 1.17" | — |
| 1981 | 72° | 42° | 57° | — | — |
| 1980 | 67° | 38° | 52° | — | — |
| 1979 | 65° | 34° | 49° | — | — |
| 1978 | 64° | 48° | 56° | 0.13" | — |
| 1977 | 69° | 42° | 56° | — | — |
| 1976 | 78° | 41° | 60° | — | — |
| 1975 | 80° | 36° | 58° | — | — |
| 1974 | 62° | 54° | 58° | — | — |
| 1973coldest | 59° | 31° | 45° | — | — |
| 1972 | 60° | 39° | 50° | — | — |
| 1971 | 78° | 47° | 62° | — | — |
56 years of data from GILLESPIE FLD