Weather on March 20
Vallejo, CA
55 Years of Data
Avg High
67°F
Avg Low
45°F
Warmest
2001
69°F avg
Coldest
1973
47°F avg
About This Date
March 20th in Vallejo, CA typically brings mild spring weather, with average highs around 67°F and lows near 45°F. Over 36 years of records, the warmest March 20th was in 2001 (69°F average), while the coldest was 1973 (47°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 39% of March 20th dates historically, with the wettest March 20th recording 2.08" of rain. The last decade has been 2.6°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.6°F cooler on this date compared to 20-30 years ago.
Planning for March 20th in Vallejo, CA? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 87° | 50° | 69° | — | — |
| 2025 | 65° | 42° | 53° | 0.2" | — |
| 2024 | 71° | 46° | 59° | — | — |
| 2023 | 59° | 42° | 51° | 0.13" | — |
| 2022 | 70° | 38° | 54° | — | — |
| 2021 | 65° | 39° | 52° | — | — |
| 2020 | 64° | 41° | 53° | — | — |
| 2019 | 66° | 49° | 57° | 1.27" | — |
| 2018 | 61° | 49° | 55° | 0.43" | — |
| 2017 | 65° | 50° | 57° | 0.15" | — |
| 2016 | 69° | 51° | 60° | 0.1" | — |
| 2015 | 81° | 51° | 66° | — | — |
| 2014 | 73° | 41° | 57° | — | — |
| 2013 | 58° | 49° | 53° | 0.13" | — |
| 2012 | 64° | 46° | 55° | — | — |
| 2011 | 55° | 42° | 49° | 0.66" | — |
| 2010 | 65° | 36° | 50° | — | — |
| 2009 | 65° | 41° | 53° | — | — |
| 2008 | 62° | 34° | 48° | — | — |
| 2007 | 64° | 42° | 53° | 0.03" | — |
| 2006 | 54° | 42° | 48° | 0.33" | — |
| 2005 | 62° | 47° | 54° | 0.46" | — |
| 2004 | 85° | 43° | 64° | — | — |
| 2003 | 67° | 48° | 57° | 0.1" | — |
| 2002 | 68° | 43° | 55° | — | — |
| 2001warmest | 79° | 59° | 69° | — | — |
| 2000 | 69° | 53° | 61° | — | — |
| 1999 | 65° | 42° | 53° | — | — |
| 1998 | 65° | 54° | 59° | — | — |
| 1977 | 63° | 41° | 52° | — | — |
| 1976 | 60° | 40° | 50° | — | — |
| 1975 | 59° | 39° | 49° | 0.13" | — |
| 1974 | 75° | 46° | 61° | — | — |
| 1973coldest | 53° | 41° | 47° | 2.08" | — |
| 1972 | 68° | 45° | 56° | — | — |
| 1971 | 76° | 50° | 63° | — | — |
36 years of data from MARE ISLAND