Vacaville Weather Records

Vacaville, California weather averages and records from 1893–2024 based on data made available by the NOAA.
All-Time Recorded High
The highest temperature ever recorded in Vacaville, California was 115 °F which occurred on September 6, 2022.
Highest Temperatures: All-Time By Year
All-Time Recorded Low
The lowest temperature ever recorded in Vacaville, California was 14 °F which occurred on December 26, 1924.
Lowest Temperatures: All-Time By Year
Vacaville Weather by Month
Averages based on the years 1991–2020
Month Average (°F) Record (°F) Average (inches)
High ☀️ Low 🌙 High ☀️ Low 🌙 Precipitation 💧
January 57.1 38.3 81 18 5.3
February 62.1 41.0 85 16 4.7
March 67.3 43.9 90 26 3.5
April 72.8 46.8 99 27 1.3
May 80.8 51.8 109 30 0.8
June 89.3 56.9 115 36 0.2
July 95.1 59.5 115 40 0.0
August 93.9 58.5 114 39 0.0
September 90.2 56.1 115 32 0.1
October 80.1 50.2 107 23 0.9
November 66.3 42.6 91 19 2.3
December 57.4 38.0 80 14 5.2
Entire year 76.0 48.6 115 14 24.2
More Vacaville Weather Records
1893–2024
Highest daily low 79 °F May 24, 1982
Lowest daily high 32 °F December 11, 1932
Greatest daily range
(Difference of high and low)
64 °F August 24, 1935
Greatest difference in daily high
over two conscutive days
34 °F Aug 4–5, 2007
Most daily precipitation 6.1 inches February 27, 1940
Most monthly precipitation 19.8 inches January 1916
Most yearly precipitation 48.9 inches 1983
Most yearly days with precipitation 103 1998
Earliest freeze October 11 1924
Earliest day ≥ 90 °F March 26 1988
Earliest day ≥ 100 °F May 7 1987
Latest freeze May 9 1933
Latest day ≥ 90 °F November 9 1955
Latest day ≥ 100 °F October 10 1991
Most days in a year < 32 °F 61 1948
Most days in a year ≥ 80 °F 184 1934
Most days in a year ≥ 90 °F 125 2020
Most days in a year ≥ 100 °F 46 1996
Most days in a year ≥ 110 °F 10 1950
Vacaville Weather Streaks
Most consecutive days...
With precipitation 18 days Dec 31, 1994 – Jan 17, 1995
Without precipitation 217 days Apr 10 – Nov 12, 2020
High temperature ≥ 80 °F 125 days May 25 – Sep 26, 1957
High temperature ≥ 90 °F 61 days Jul 9 – Sep 7, 1967
High temperature ≥ 100 °F 14 days Jul 8–21, 1961
High temperature ≥ 110 °F 5 days Jul 5–9, 1905
Plant Hardiness Zone
9B
Vacaville is in plant hardiness zone 9B
based on average yearly minimum temperature from 1991–2020
Vacaville Weather by Year
More Vacaville Weather
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Weather Station Details
Years Station Coordinates
1999–2024 Vacaville Nut Tree Airport location
1893–1998 Vacaville location