30-year climate normals

Butte County Climate and Weather Averages

Hottest month — July

95.8°

average daily high. The coldest month is December, averaging a low of 39.6°F.

Butte County gets 25.67" of precipitation a year, and 57% 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	55.2°	39.7°	5.20"
February	60.5°	42.4°	4.79"
March	66.0°	45.2°	3.33"
April	72.3°	48.5°	1.80"
May	81.1°	54.9°	1.05"
June	89.7°	61.1°	0.32"
July	95.8°	65.2°	0.04"
August	94.1°	63.5°	0.04"
September	88.6°	59.4°	0.16"
October	78.4°	51.7°	1.44"
November	63.7°	44.1°	2.87"
December	55.2°	39.6°	4.63"

Rainfall by month

Butte County has a distinct wet season. 57% of the year's precipitation arrives in Dec, Jan, Feb.

January 5.20"

February 4.79"

March 3.33"

April 1.80"

May 1.05"

June 0.32"

July 0.04"

August 0.04"

September 0.16"

October 1.44"

November 2.87"

December 4.63"

Annual total 25.67"

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 1,747

Heating degree days How much heating the climate demands 2,394

Approximate annual cooling cost At 33.25¢/kWh, California average $581

Approximate annual electric heating cost Lower where heating is gas rather than electric $279

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 Butte County, where electricity is one line of eight.

Common questions

What is the weather like in Butte County?

Butte County averages a high of 95.8°F in July and a low of 39.6°F in December. Annual precipitation is 25.67 inches, with essentially no snow.

When is the rainy season in Butte County?

The wettest stretch is Dec, Jan, Feb, which accounts for 57% 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 Butte County?

The average daily high in July, the hottest month, is 95.8°F. That drives 1,747 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Butte County?

Effectively no. Measurable snowfall is rare in Butte County.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station OROVILLE MUNI AP, CA US (USW00093210), 12.1 miles from the county centroid.
Heating and cooling degree days — NOAA, same station and period.
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.