Calimesa Weather Forecast

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Last Updated: December 7, 2025

Calimesa is a small city located in Riverside County, California, known for its warm and dry climate.


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Summary

The summers are hot, with temperatures regularly reaching into the 90s, while winters are mild and pleasant. The city is situated in the San Gorgonio Pass and is surrounded by mountains and canyons, providing stunning views and outdoor recreation opportunities such as hiking, camping, and birdwatching. Calimesa is part of the Yucaipa Valley Water District and relies on groundwater from the San Bernardino Mountains for its water supply. However, the area has experienced water quality issues, with high levels of nitrates and MTBE (a gasoline additive) found in some wells. Despite these challenges, Calimesa remains a popular destination for those seeking to enjoy the natural beauty of Southern California.

       

Weather Forecast

Calimesa receives approximately 483mm of rain per year, with humidity levels near 75% and air temperatures averaging around 17°C. Calimesa has a plant hardyness factor of 9, meaning plants and agriculture in this region tend to thrive here all year round.