What is the hottest month in Benicia, CA?

September is the warmest month, with a normal high of 86°F at Vallejo.

What is the coldest month in Benicia, CA?

January is the coldest month, with a normal low of 42°F.

What is the wettest month in Benicia, CA?

December has the most precipitation on average, about 4.49 inches.

Checked Oct 25, 2026

Benicia, CA Climate

1991 to 2020 normals at Vallejo, 2.4 mi from the center of Benicia, elevation 341 ft.

Average weather by month

Select a month for daily normals and last year's weather

Month	High	Low	Precip.	Snow
January	57°	42°	4.46 in	--
February	63°	45°	3.58 in	--
March	68°	46°	3.18 in	--
April	73°	47°	1.45 in	--
May	78°	51°	0.80 in	--
June	83°	54°	0.22 in	--
July	85°	56°	0.00 in	--
August	86°	56°	0.04 in	--
September	86°	57°	0.08 in	--
October	79°	54°	1.02 in	--
November	66°	47°	2.17 in	--
December	58°	42°	4.49 in	--
Year	74°		21.49 in	--

Frequently asked questions

What is the hottest month in Benicia, CA?: September is the warmest month, with a normal high of 86°F at Vallejo.
What is the coldest month in Benicia, CA?: January is the coldest month, with a normal low of 42°F.
What is the wettest month in Benicia, CA?: December has the most precipitation on average, about 4.49 inches.

Today

Benicia, CA forecast

Data sources

U.S. Climate Normals 1991-2020NOAA National Centers for Environmental Information · Official site
U.S. Climate Normals 1991-2020 (daily) and GHCN-Daily via Access Data ServiceNOAA National Centers for Environmental Information · Official site

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About this data

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Climate normals are 30-year averages measured at one weather station, which may be miles from the place named here or at a different elevation.

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