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United States › California › Colusa County › Climate Station COLUSA 2 SSW, CA US Distance 11.3 mi Normals 1991–2020

30-year climate normals

Colusa County Climate and Weather Averages

Hottest month — July

92.4°

average daily high. The coldest month is December, averaging a low of 37.7°F.

Colusa County gets 17.19" 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.

40° 60° 80° JanFebMarAprMayJunJulAugSepOctNovDec
MonthAvg highAvg low Precip
January 54.6° 38.2° 3.58"
February 60.2° 41.1° 2.97"
March 66.5° 43.8° 2.19"
April 73.4° 46.1° 1.00"
May 81.1° 53.4° 0.84"
June 88.2° 58.7° 0.51"
July 92.4° 59.9° 0.01"
August 91.7° 58.1° 0.03"
September 89.1° 54.4° 0.11"
October 79.0° 47.9° 0.87"
November 64.1° 41.8° 1.91"
December 54.5° 37.7° 3.17"

Rainfall by month

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

January 3.58"
February 2.97"
March 2.19"
April 1.00"
May 0.84"
June 0.51"
July 0.01"
August 0.03"
September 0.11"
October 0.87"
November 1.91"
December 3.17"
Annual total 17.19"

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 1,329
Heating degree days How much heating the climate demands 2,588
Approximate annual cooling cost At 33.25¢/kWh, California average $442
Approximate annual electric heating cost Lower where heating is gas rather than electric $301

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 Colusa County, where electricity is one line of eight.

Common questions

What is the weather like in Colusa County?

Colusa County averages a high of 92.4°F in July and a low of 37.7°F in December. Annual precipitation is 17.19 inches, with essentially no snow.

When is the rainy season in Colusa 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 Colusa County?

The average daily high in July, the hottest month, is 92.4°F. That drives 1,329 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Colusa County?

Effectively no. Measurable snowfall is rare in Colusa County.

Sources

  • Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station COLUSA 2 SSW, CA US (USC00041948), 11.3 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.