This weather has a price Keeping the median Solano County home comfortable runs roughly $755 a year in heating and cooling alone. See where it lands in the monthly bill

30-year climate normals

Solano County Climate and Weather Averages

Hottest month: July

95.0°

average daily high. The coldest month is December, averaging a low of 37.1°F.

Solano County gets 24.84" of precipitation a year, and 62% of it falls in Dec, Jan, Feb.

Temperature through the year

Each bar spans the average daily low to the average daily high for that month.

Month	Avg high	Avg low	Precip
January	57.6°	37.7°	5.26"
February	62.6°	40.3°	5.06"
March	67.7°	43.0°	3.69"
April	72.8°	45.8°	1.29"
May	81.0°	51.1°	0.81"
June	89.5°	56.4°	0.17"
July	95.0°	59.0°	0.01"
August	93.8°	57.9°	0.02"
September	90.6°	55.6°	0.06"
October	79.9°	49.1°	1.08"
November	66.5°	41.5°	2.31"
December	57.8°	37.1°	5.08"

Rainfall by month

Solano County has a distinct wet season. 62% of the year's precipitation arrives in Dec, Jan, Feb.

January 5.26"

February 5.06"

March 3.69"

April 1.29"

May 0.81"

June 0.17"

July 0.01"

August 0.02"

September 0.06"

October 1.08"

November 2.31"

December 5.08"

Annual total 24.84"

What this climate costs you

Degree days measure how hard a building has to work to stay comfortable. They are the reason two identical houses have very different power bills, and they are the link between the weather here and what you pay every month.

Cooling degree days How much air conditioning the climate demands 1,391

Heating degree days How much heating the climate demands 2,446

Approximate annual cooling cost At 33.61¢/kWh, California average $468

Approximate annual electric heating cost Lower where heating is gas rather than electric $288

These are rough planning figures from degree days and the state electricity price, not a bill estimate. House size, insulation and fuel type move them a lot. See the full cost of owning a home in Solano County, where electricity is one line of eight.

Common questions

What is the weather like in Solano County?

Solano County averages a high of 95.0°F in July and a low of 37.1°F in December. Annual precipitation is 24.84 inches, with essentially no snow.

When is the rainy season in Solano County?

The wettest stretch is Dec, Jan, Feb, which accounts for 62% of the year's precipitation. That is a pronounced wet season rather than rain spread evenly through the year.

How hot does it get in Solano County?

The average daily high in July, the hottest month, is 95.0°F. That drives 1,391 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Solano County?

The weather station used for Solano County, VACAVILLE NUT TREE AP, CA US, reports temperature and precipitation but not snowfall, so there is no snow normal to quote here. Precipitation that falls as snow is still counted in the 24.84 inches above, measured as melted water.

Sources

Temperature, precipitation and snowfall normals: NOAA National Centers for Environmental Information, 1991 to 2020 Monthly Climate Normals, station VACAVILLE NUT TREE AP, CA US (USW00093241), 7.7 miles from the county centroid.
Heating and cooling degree days: NOAA, same station and period.
Annual figures on this page are the sum of that station's twelve monthly normals. NOAA also publishes a separately-computed annual normal, which can differ from the monthly sum by a few percent; we use the monthly series because the month-by-month breakdown above has to come from it.
Electricity price: US Energy Information Administration, Electric Power Monthly Table 5.6.A, California residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.