What is the hottest month in Wilton, CA?

July is the warmest month, with a normal high of 94°F at Sacramento 5 Ese.

What is the coldest month in Wilton, CA?

December is the coldest month, with a normal low of 41°F.

What is the wettest month in Wilton, CA?

January has the most precipitation on average, about 3.87 inches.

Checked Oct 25, 2026

Wilton, CA Climate

1991 to 2020 normals at Sacramento 5 Ese, 15 mi from the center of Wilton, elevation 38 ft.

Average weather by month

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

Month	High	Low	Precip.
January	57°	41°	3.87 in
February	62°	44°	3.63 in
March	68°	47°	2.82 in
April	74°	49°	1.44 in
May	81°	54°	0.86 in
June	89°	59°	0.21 in
July	94°	61°	0.00 in
August	94°	61°	0.02 in
September	89°	59°	0.15 in
October	79°	53°	0.93 in
November	65°	45°	1.78 in
December	56°	41°	3.49 in
Year	76°		19.20 in

Frequently asked questions

What is the hottest month in Wilton, CA?: July is the warmest month, with a normal high of 94°F at Sacramento 5 Ese.
What is the coldest month in Wilton, CA?: December is the coldest month, with a normal low of 41°F.
What is the wettest month in Wilton, CA?: January has the most precipitation on average, about 3.87 inches.

Today

Wilton, CA forecast

Data sources

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

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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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