Climate Insights for Oroville

The climate in Oroville is cool. The average annual temperature is 7°C and approximately 685mm of precipitation falls per year. January is the wettest month, receiving around 98mm of rainfall. Oroville is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, June. The coldest months are February, January, December, when temperatures can drop to -7°C. Oroville experiences heavy snowfall, typically from January through December.

Temperatures in Oroville vary considerably across the year, with a 34°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 27°C and the mean temperature sits around 19°C. The coldest month is February, when overnight lows fall to -7°C and the daily average is -3°C. On average, daily temperatures fluctuate by about 11°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 8°C shift in average temperatures.

Oroville is a relatively dry area, receiving approximately 685mm of precipitation annually, which averages out to around 57mm per month. The wettest month is January, averaging 98mm of rainfall. March and November also tend to see above-average precipitation. The driest month is August, with just 7mm. That's 91mm less than January, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Oroville receives heavy snowfall, accumulating around 329cm annually from January through December. The snowiest month is January, with approximately 87cm. Winter travel should account for significant snow cover.

Oroville is relatively calm, with an average annual wind speed of 2km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is July, averaging 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in January, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.

It is currently summer in Oroville, which began on June 21, 2026. Oroville is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 27°C, while the coldest stretch bottoms out in February near -7°C. Autumn is next, beginning on September 23, 2026 — 78 days from now.

The best time to visit Oroville is during June, July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 18mm per month. By contrast, February can be quite cold with temperatures dropping to -7°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Oroville based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.