Fairfield city, California

Official LSAD Designation: Fairfield city • Census GEOID: 0623182 • Solano County

Climate Normals & Weather Observations

30-year climate normals (1991–2020) and weather observations for Fairfield city.

Reference Weather Station: FAIRFIELD, CA US (ID: USC00042934) • Located 2.1 miles from community center • Elevation: 12.2 m

Month	Average High (°F)	Average Low (°F)	Mean Temp (°F)	Precipitation (in)
January	56.6°	40.4°	48.5°	4.68"
February	61.6°	42.9°	52.2°	4.97"
March	66.4°	45.4°	55.9°	3.31"
April	71.3°	47.9°	59.6°	1.47"
May	77.8°	52.2°	65.0°	0.74"
June	85.4°	56.1°	70.8°	0.19"
July	89.6°	57.9°	73.8°	0.00"
August	89.2°	58.0°	73.6°	0.03"
September	86.9°	56.6°	71.7°	0.08"
October	78.2°	52.3°	65.2°	1.11"
November	65.6°	45.2°	55.4°	2.55"
December	56.7°	40.1°	48.4°	5.40"

2010–2025, completed calendar years only.

NOAA station FAIRFIELD, CA US (ID: USC00042934) • 2.1 miles from community center .

This is the same reference station used for monthly normals.

Show annual mean of daily highs and lows

Annual mean Annual mean of daily highs Annual mean of daily lows

Annual temperature data table (°F)

Annual station temperatures, 2010–2025. Unavailable means no reported value.
Year	Annual mean (°F)	Annual mean of daily highs (°F)	Annual mean of daily lows (°F)
2010	59.2	70.7	47.7
2011	58.6	71.0	46.3
2012	Unavailable	74.0	Unavailable
2013	Unavailable	Unavailable	Unavailable
2014	63.8	75.9	51.6
2015	63.4	75.9	51.0
2016	62.3	74.0	50.5
2017	62.8	74.6	50.9
2018	62.2	74.6	49.7
2019	62.2	73.9	50.6
2020	63.7	76.7	50.7
2021	62.5	75.1	49.9
2022	62.6	75.6	49.5
2023	61.1	73.0	49.2
2024	63.9	75.9	51.9
2025	Unavailable	Unavailable	Unavailable

Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.