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.
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.
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?
The weather station used for Butte County, OROVILLE MUNI 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 25.67 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 OROVILLE MUNI AP, CA US (USW00093210), 12.1 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.