Climate Insights for Jurupa Valley

The climate in Jurupa Valley is temperate. The average annual temperature is 18°C and approximately 441mm of precipitation falls per year. January is the wettest month, receiving around 99mm of rainfall. Jurupa Valley is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are December, January, February, when temperatures can drop to 6°C. Light snow can occur between February and December.

Temperatures in Jurupa Valley vary considerably across the year, with a 28°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 34°C and the mean temperature sits around 26°C. December is the coolest month, with minimum temperatures around 6°C and an average of 11°C. On average, daily temperatures fluctuate by about 13°C between overnight lows and afternoon highs. The sharpest temperature change occurs between May and June, with a 5°C shift in average temperatures.

Jurupa Valley is a relatively dry area, receiving approximately 441mm of precipitation annually, which averages out to around 37mm per month. The wettest month is January, averaging 99mm of rainfall. February and March also tend to see above-average precipitation. The driest month is June, with just 2mm. That's 97mm 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. Light snowfall can occur between February and December, totalling around 8cm annually. February is the snowiest month with approximately 3cm.

Jurupa Valley 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 May, averaging 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 0km/h between the calmest and windiest months.

It is currently spring in Jurupa Valley, which began on March 20, 2026. Jurupa Valley 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 34°C, while the coldest stretch bottoms out in December near 6°C. Summer is next, beginning on June 21, 2026 — 4 days from now.

The best time to visit Jurupa Valley is during April, May, June, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 17mm per month. By contrast, August can be uncomfortably hot with highs reaching 34°C, while December is the coldest period with lows dropping to 6°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Jurupa Valley 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.