South Oroville, CA climate
South Oroville has mild winters and hot summers. A typical July afternoon reaches 96°, a January night drops to 39°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in South Oroville feels like
Winter
Spring
Summer
Fall
South Oroville weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 56° | 39° | 4.9" | 0 | 12 | 0 | 44° – 53° |
| February | 62° | 42° | 5.2" | 0.1" | 11 | 0 | 47° – 57° |
| March | 67° | 44° | 4.0" | 0 | 11 | 0 | 50° – 61° |
| April | 73° | 47° | 2.0" | 0 | 8 | 0 | 55° – 64° |
| May | 82° | 54° | 1.2" | 0 | 6 | 0 | 58° – 75° |
| June | 90° | 59° | 0.5" | 0 | 3 | 0 | 69° – 80° |
| July | 96° | 63° | 0.0" | 0 | 0 | 0 | 75° – 84° |
| August | 95° | 61° | 0.1" | 0 | 1 | 0 | 75° – 82° |
| September | 90° | 58° | 0.2" | 0 | 1 | 0 | 70° – 78° |
| October | 79° | 50° | 1.5" | 0 | 5 | 0 | 61° – 70° |
| November | 65° | 44° | 2.8" | 0 | 9 | 0 | 47° – 60° |
| December | 56° | 39° | 4.7" | 0 | 12 | 0 | 43° – 51° |
| Year | 76° | 50° | 26.8" | 0.1" | 78 | 0 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in South Oroville
South Oroville gets 27 inches of rain and melted snow a year. February is the wettest month and July the driest. Rain or snow falls on about 78 days a year.
About 321 frost-free days a year
In half of years the last 32° night comes by January 30 and the first one by December 13. That leaves about 321 frost-free days for gardens, longer than 96% of U.S. towns.
Heating and cooling a home in South Oroville
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In South Oroville, 57% of that work is heating and 43% is cooling.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
South Oroville and its neighbors
South Oroville borders 3 towns with climate data. January nights across them vary by 0.2°. Oroville has both the coldest January nights (39°) and the hottest July afternoons (96°). South Oroville’s January low is 39° and its July high 96°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How South Oroville compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in South Oroville averaged 1.2° warmer than the 1900s. The biggest change is in January (+2.5°). The shift is smaller than in 52% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at South Oroville’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. May swings the most: between 1991 and 2020 its average temperature ranged from 58° to 75°. August is the most reliable, staying within 7°.
Common questions about South Oroville’s climate
What is the coldest month in South Oroville?
December, with a typical high of 56° and a low of 39°.
What is the hottest month in South Oroville?
July, with a typical high of 96° and a low of 63°. About 97 days a year reach 90°.
How much snow does South Oroville get?
Almost none. A normal year brings 0.1 inches.
When is the first frost in South Oroville?
In half of years the first 32° night comes by December 13, and the last spring frost by January 30.
What is the rainiest month in South Oroville?
February, with 5.2 inches of rain and melted snow. The year totals 27 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for South Oroville itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Paradise, CA (20 mi, snow) and Oroville, CA (3 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.