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Vacaville, CA Weather on May 27
May 27th in Vacaville, CA typically brings warm spring weather, with average highs around 83°F and lows near 53°F — a 30°F daily swing. Over 55 years of records, the warmest May 27th was in 2020 (83°F average), while the coldest was 1998 (53°F) — a 30°F range across recorded history. Rain or other precipitation has occurred on about 9% of May 27th dates historically, with the wettest May 27th recording 2.41" of rain. The last decade has been 1.7°F warmer on this date compared to 20-30 years ago.
What to Expect on May 27
Planning for May 27th in Vacaville, CA? Stay hydrated and seek shade during peak afternoon hours.
May 27 Weather Records for Vacaville
- •The all-time record high for May 27th in Vacaville, CA is 104°F, set in 2020.
- •The coldest May 27th on record dropped to 41°F in 1977.
- •Temperatures have reached 90°F or higher on May 27th in 17 of the last 55 years.
- •Last year (1971), May 27th was 13°F cooler than the long-term average.
Frequently Asked Questions
What was the warmest May 27 ever in Vacaville?
The warmest May 27 in Vacaville, CA reached 104°F in 2020. That is 21°F above the long-term average high of 83°F.
What was the coldest May 27 ever in Vacaville?
The coldest May 27 in Vacaville, CA dropped to 41°F in 1977. That is 12°F below the long-term average low of 53°F.
What is the average temperature on May 27 in Vacaville?
On May 27, Vacaville averages a high of 83°F and a low of 53°F based on 55 years of NOAA weather observations from VACAVILLE/NUT TREE AP ASOS.
How many years of weather data are available for May 27 in Vacaville?
We have 55 years of weather records for May 27 in Vacaville, 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 Vacaville
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 89°F | 51°F | 0" | -- |
| 2024 | 86°F | 54°F | 0" | -- |
| 2023 | 79°F | 53°F | 0" | -- |
| 2022 | 84°F | 52°F | 0" | -- |
| 2021 | 88°F | 52°F | 0" | -- |
| 2020 | 104°F | 62°F | 0" | -- |
| 2019 | 73°F | 52°F | 0" | -- |
| 2018 | 91°F | 49°F | 0" | -- |
| 2017 | 80°F | 54°F | 0" | -- |
| 2016 | 90°F | 54°F | 0" | -- |
| 2015 | 82°F | 53°F | 0" | -- |
| 2014 | 87°F | 56°F | 0" | -- |
| 2013 | 68°F | 53°F | 0.05" | -- |
| 2012 | 76°F | 49°F | 0" | -- |
| 2011 | 72°F | 52°F | 0" | -- |
| 2010 | 63°F | 48°F | 0.84" | -- |
| 2009 | 96°F | 64°F | 0" | -- |
| 2008 | 74°F | 48°F | 0" | -- |
| 2007 | 79°F | 54°F | 0" | -- |
| 2006 | 70°F | 49°F | 0" | -- |
| 2005 | 88°F | 56°F | 0" | -- |
| 2004 | 83°F | 58°F | 0" | -- |
| 2003 | 94°F | 54°F | 0" | -- |
| 2002 | 79°F | 54°F | 0" | -- |
| 2001 | 78°F | 53°F | 0" | -- |
| 2000 | 89°F | 57°F | 0" | -- |
| 1999 | 85°F | 53°F | 0" | -- |
| 1998 | 57°F | 48°F | 0.66" | -- |
| 1997 | 91°F | 52°F | 0" | -- |
| 1996 | 82°F | 52°F | 0" | -- |
| 1995 | 84°F | 56°F | 0" | -- |
| 1994 | 81°F | 48°F | 0" | -- |
| 1993 | 74°F | 55°F | 0.1" | -- |
| 1992 | 95°F | 56°F | 0" | -- |
| 1991 | 85°F | 49°F | 0" | -- |
| 1990 | 68°F | 50°F | 2.41" | -- |
| 1989 | 84°F | 55°F | 0" | -- |
| 1988 | 76°F | 53°F | 0" | -- |
| 1987 | 75°F | 50°F | 0" | -- |
| 1986 | 89°F | 58°F | 0" | -- |
| 1985 | 73°F | 50°F | 0" | -- |
| 1984 | 98°F | 59°F | 0" | -- |
| 1983 | 90°F | 52°F | 0" | -- |
| 1982 | 76°F | 50°F | 0" | -- |
| 1981 | 94°F | 54°F | 0" | -- |
| 1980 | 73°F | 49°F | 0" | -- |
| 1979 | 90°F | 54°F | 0" | -- |
| 1978 | 92°F | 48°F | 0" | -- |
| 1977 | 76°F | 41°F | 0" | -- |
| 1976 | 95°F | 55°F | 0" | -- |
| 1975 | 91°F | 53°F | 0" | -- |
| 1974 | 99°F | 58°F | 0" | -- |
| 1973 | 91°F | 46°F | 0" | -- |
| 1972 | 92°F | 48°F | 0" | -- |
| 1971 | 70°F | 49°F | 0" | -- |
Based on 55 years of data from NOAA station: VACAVILLE/NUT TREE AP ASOS
Monthly Climate Averages
Historical temperature and precipitation averages for Vacaville, CA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.