Best year time to visit Riverside County

General weather information about Riverside County

Average annual temperature is 21.4 °C

Absolute maximum temperature: 43.7 °C

Absolute minimum temperature: 1.0 °C

Number of sunny days: 334 days

Number of rainy days: 31 days

* Weather data for Riverside County United States is based on climate observations for 2026 year

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	18.5	20.7	23.7	36.0	36.1	38.3	43.7	42.7	40.3	35.8	26.4	22.7
Average daytime temperature (°C)	14.3	16.6	18.5	27.9	29.8	32.6	40.4	37.3	33.1	29.4	21.3	17.9
Average temperature (°C)	10.3	11.4	13.4	21.7	24.0	26.6	34.8	32.0	28.0	23.7	16.7	13.8
Average night temperature (°C)	6.6	6.9	8.8	15.9	18.3	20.8	29.1	27.2	23.2	18.8	12.2	9.8
Absolute minimum temperature (°C)	1.0	1.8	2.6	3.9	9.8	15.9	23.1	19.1	18.1	10.9	7.0	6.7

The largest precipitation sum in Riverside County is at

January — 25(mm)

March — 27(mm)

August — 58(mm)

When is the best time to visit Riverside County?

The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Riverside County.

What is the weather like in Riverside County?

See average temperature, rainfall and daylight hours for Riverside County by month in the table above.

How many sunny days does Riverside County have?

The monthly weather statistics above show sunshine and rainfall patterns for Riverside County throughout the year.