Oroville, CA

Climate overview — based on NOAA 1991-2020 normals from OROVILLE, CA US.

Csa Hot-summer Mediterranean climate 9a USDA hardiness Zone 9a

Year-round temperatures (°F)

30° 50° 70° 90° J F M A M J J A S O N D
Avg high Avg low

Climate summary

Oroville has an annual average temperature of 63.5°F with about 30.6 inches of precipitation per year. The warmest month is July (average high 96.8°F), and the coldest is January (average low 39.7°F). January is typically the wettest month (5.79 in) and July the driest (0.01 in).

Pleasant months
1 / 12
avg high 65–80°F, low ≥ 50°F
Annual swing
31.2°F
warmest to coldest month
Heating need
2,028
Cooling need
1,500

Best time to visit Oroville

Full guide →

Climate change signal

All-time records →

92 of 366 (25.1%) of Oroville's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.

1950s
44
1960s
65
1970s
25
1980s
40
1990s
33
2000s
47
2010s
41
2020s
71

Bars: number of all-time daily heat records still standing that were set in each decade.

Monthly averages

Month Avg High Avg Low Avg Temp Precipitation Snow Rainy days
January 57.7°F 39.7°F 48.7°F 5.79 in 11
February 62.2°F 42.4°F 52.3°F 5.62 in 10
March 67.5°F 45.6°F 56.6°F 4.71 in 10
April 73.5°F 48.3°F 60.9°F 2.23 in 6
May 82.3°F 54.0°F 68.2°F 1.43 in 4
June 91.1°F 59.2°F 75.2°F 0.59 in 2
July 96.8°F 63.0°F 79.9°F 0.01 in 0
August 95.5°F 61.1°F 78.3°F 0.13 in 0
September 89.6°F 57.1°F 73.3°F 0.37 in 1
October 79.2°F 51.1°F 65.1°F 1.33 in 3
November 65.7°F 44.6°F 55.2°F 2.85 in 7
December 57.5°F 39.9°F 48.7°F 5.50 in 10

Climate twins of Oroville

Why these? →

The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).

Frost dates
Last spring / first fall frost
All-time records
Hottest, coldest, wettest
Planting calendar
What to plant, and when

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