Riverside (CA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Riverside.
Climate overview of Riverside
The climate in Riverside, California, United States of America, is marked by large temperature swings across the seasons, ranging from 35°C (95°F) in August to 19°C (66°F) in January.
The area sees almost no rainfall, totalling just 193 mm (7.6 in) per year. July is the sunniest month, averaging 12.3 hours of sunshine per day.
Riverside Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Riverside — and find the best time to visit.
Monthly Temperature in Riverside
In Riverside, temperatures differ significantly between summer and winter months. Typically, average maximum daytime temperatures range from a very warm 35°C (95°F) in August to a pleasant 19°C (66°F) in the coolest month, January.
Nights vary from 18°C (64°F) in August to around 6°C (43°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Riverside
Riverside sits in an arid zone with minimal moisture, averaging 193 mm (7.6 in) of rainfall per year. The climate in Riverside shows significant variation throughout the year. Expect moderate rainfall in December, the wettest month, with an average of 62 mm (2.4 in) of precipitation over 7 rainy days.
In contrast, the driest month June offers drier and sunnier days, with around 0 mm (0 in) of rainfall over 0 rainy days. For more details, please visit our Riverside Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Riverside
For those who appreciate different seasons, Riverside serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 12.3 hours of sunshine daily, and embrace the darker days in January, offering only 6.6 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Best Time to Visit Riverside
While rain is rare, remember to stay hydrated and protect yourself from the sun while you're outside. Ready to plan your travels but need destination ideas? Our smart tool recommends places based on the climate conditions you prefer. Start planning with our destination weather tool.
Frequently asked questions about the climate in Riverside
What is the best time to visit Riverside?
January, February, March, April, May, October and November typically offer the most optimal weather in Riverside. In contrast, July, August and September tend to have less optimal conditions. Riverside has a distinct dry season from January to November.
What temperatures can I expect in Riverside?
Daytime highs range from 19°C (66°F) in January to 35°C (95°F) in August. Nighttime lows range from 6°C (43°F) to 18°C (64°F). Temperatures vary considerably through the year.
How much rain does Riverside get?
Annual rainfall is around 193 mm (7.6 in). December is the wettest month with 62 mm (2.4 in), while June is the driest with 0 mm (0 in).
How sunny is Riverside?
Riverside receives around 3,279 hours of sunshine per year. July is the sunniest month with 369 hours, while January is the cloudiest with just 198 hours. Overall, Riverside enjoys abundant sunshine.
Riverside 3-Day Forecast
Riverside (CA) 3-Day Forecast
Riverside on the map
Riverside is highlighted — select any city to see its climate.
Popular this month
Where to go in July — average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
The 10 most alternative cities in the United States
Discover the top 10 fun and alternative U.S. cities rich in art, culture, and adventure. From Portland's hippy charm to Sedona's stunning landscapes.
Sedona: Explore Majestic Red Rock Landscapes
A picturesque artists' town surrounded by red rocks and known for its spirituality, vortex energy, and stunning hikes like Cathedral Rock.
10 most idyllic villages to visit in the United States
Discover 10 idyllic villages in the USA, from California to Vermont. Explore their unique charm, rich history, stunning nature, and vibrant arts scenes.