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Vallejo, CA Weather on May 27
May 27th in Vallejo, CA typically brings pleasant spring weather, with average highs around 77°F and lows near 50°F — a 27°F daily swing. Over 55 years of records, the warmest May 27th was in 2020 (81°F average), while the coldest was 2010 (52°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 11% of May 27th dates historically, with the wettest May 27th recording 1.65" of rain. The last decade has been 1.6°F warmer on this date compared to 20-30 years ago.
What to Expect on May 27
Planning for May 27th in Vallejo, CA? Great weather for outdoor activities.
May 27 Weather Records for Vallejo
- •The all-time record high for May 27th in Vallejo, CA is 100°F, set in 1984.
- •The coldest May 27th on record dropped to 42°F in 2012.
- •Temperatures have reached 90°F or higher on May 27th in 6 of the last 55 years.
- •Last year (1971), May 27th was 12°F cooler than the long-term average.
Frequently Asked Questions
What was the warmest May 27 ever in Vallejo?
The warmest May 27 in Vallejo, CA reached 100°F in 1984. That is 23°F above the long-term average high of 77°F.
What was the coldest May 27 ever in Vallejo?
The coldest May 27 in Vallejo, CA dropped to 42°F in 2012. That is 8°F below the long-term average low of 50°F.
What is the average temperature on May 27 in Vallejo?
On May 27, Vallejo averages a high of 77°F and a low of 50°F based on 55 years of NOAA weather observations from VALLEJO.
How many years of weather data are available for May 27 in Vallejo?
We have 55 years of weather records for May 27 in Vallejo, CA, sourced from NOAA's Global Historical Climatology Network. Records include daily high and low temperatures, precipitation, and snowfall data going back to 2025.
May 27 Weather History in Vallejo
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 81°F | 52°F | 0" | -- |
| 2024 | 78°F | 50°F | 0" | -- |
| 2023 | 68°F | 45°F | 0" | -- |
| 2022 | 71°F | 55°F | 0" | -- |
| 2021 | 81°F | -- | 0" | -- |
| 2020 | 99°F | 64°F | 0" | -- |
| 2019 | 69°F | 45°F | 0" | -- |
| 2018 | 87°F | 53°F | 0" | -- |
| 2017 | 76°F | 50°F | 0" | -- |
| 2016 | 89°F | 52°F | 0" | -- |
| 2015 | 74°F | 51°F | 0" | -- |
| 2014 | 80°F | 47°F | 0" | -- |
| 2013 | 66°F | 50°F | 0.05" | -- |
| 2012 | 69°F | 42°F | 0" | -- |
| 2011 | 69°F | 47°F | 0.03" | -- |
| 2010 | 61°F | 44°F | 1.19" | -- |
| 2009 | 73°F | 48°F | 0" | -- |
| 2008 | 70°F | 49°F | 0" | -- |
| 2007 | 66°F | 51°F | 0" | -- |
| 2006 | 70°F | 47°F | 0" | -- |
| 2005 | 73°F | 53°F | 0" | -- |
| 2004 | 77°F | 56°F | 0" | -- |
| 2003 | 87°F | 45°F | 0" | -- |
| 2002 | 73°F | 51°F | 0" | -- |
| 2001 | 66°F | 50°F | 0" | -- |
| 2000 | 81°F | 53°F | 0" | -- |
| 1999 | 76°F | 52°F | 0" | -- |
| 1998 | 62°F | 49°F | 1.65" | -- |
| 1997 | 89°F | 58°F | 0" | -- |
| 1996 | 81°F | 52°F | 0" | -- |
| 1995 | 80°F | 50°F | 0" | -- |
| 1994 | 80°F | 48°F | 0" | -- |
| 1993 | 73°F | 53°F | 0.13" | -- |
| 1992 | 88°F | 55°F | 0" | -- |
| 1991 | 85°F | 47°F | 0" | -- |
| 1990 | 65°F | 53°F | 0.53" | -- |
| 1989 | 76°F | 50°F | 0" | -- |
| 1988 | 79°F | 52°F | 0" | -- |
| 1987 | 78°F | 44°F | 0" | -- |
| 1986 | 84°F | 55°F | 0" | -- |
| 1985 | 66°F | 51°F | 0" | -- |
| 1984 | 100°F | 50°F | 0" | -- |
| 1983 | 83°F | 52°F | 0" | -- |
| 1982 | 79°F | 49°F | 0" | -- |
| 1981 | 90°F | 55°F | 0" | -- |
| 1980 | 70°F | 44°F | 0" | -- |
| 1979 | 80°F | 51°F | 0" | -- |
| 1978 | 91°F | 49°F | 0" | -- |
| 1977 | 66°F | 42°F | 0" | -- |
| 1976 | 90°F | 53°F | 0" | -- |
| 1975 | 75°F | 53°F | 0" | -- |
| 1974 | 97°F | -- | 0" | -- |
| 1973 | 70°F | 47°F | 0" | -- |
| 1972 | 66°F | 48°F | 0" | -- |
| 1971 | 65°F | 51°F | 0" | -- |
Based on 55 years of data from NOAA station: VALLEJO
Monthly Climate Averages
Historical temperature and precipitation averages for Vallejo, CA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.