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Riverside County Weather May

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Temperatures trend during May in Riverside County

See the weather trend as well as the moving average line

May weather in Riverside County day by day

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Date	Weather	Temperatures	Rain	UV
May 1	Patchy rain possible	22° /12°	0.2 mm	5
May 2	Patchy rain possible	22° /12°	0.2 mm	5
May 3	Patchy rain possible	21° /12°	0.3 mm	5
May 4	Moderate or heavy rain shower	17° /11°	3.8 mm	5
May 5	Patchy rain possible	16° /11°	1.2 mm	4
May 6	Overcast	19° /10°	0 mm	5
May 7	Cloudy	23° /12°	0 mm	5
May 8	Sunny	26° /12°	0 mm	6
May 9	Sunny	28° /14°	0.1 mm	7
May 10	Sunny	29° /15°	0 mm	7
May 11	Sunny	27° /16°	0 mm	7
May 12	Sunny	27° /14°	0 mm	7
May 13	Sunny	25° /14°	0 mm	6
May 14	Sunny	27° /13°	0 mm	7
May 15	Partly cloudy	27° /13°	0 mm	7
May 16	Sunny	26° /14°	0 mm	6
May 17	Sunny	24° /14°	0 mm	6
May 18	Sunny	25° /14°	0 mm	6
May 19	Partly cloudy	27° /13°	0 mm	7
May 20	Overcast	28° /14°	0 mm	6
May 21	Cloudy	29° /15°	0 mm	7
May 22	Sunny	28° /15°	0 mm	7
May 23	Partly cloudy	25° /14°	0 mm	6
May 24	Cloudy	22° /13°	0 mm	5
May 25	Cloudy	22° /13°	0 mm	5
May 26	Partly cloudy	24° /13°	0 mm	6
May 27	Partly cloudy	26° /13°	0 mm	6
May 28	Overcast	26° /13°	0 mm	6
May 29	Sunny	26° /14°	0 mm	7
May 30	Sunny	29° /16°	0.3 mm	7
May 31	Patchy rain possible	27° /16°	0.4 mm	6
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Important Notice

Our weather forecast for Riverside County in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Riverside County forecast closer to your planned date for the most up-to-date weather information.

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Riverside County in May - FAQ

What are the expected maximum and minimum temperatures in Riverside County during May?

Enjoy moderate daytime temperatures of up to 24° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Riverside County during May?

Rainfall in Riverside County during May is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 2 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.

What are the typical wind conditions in Riverside County during May?

The average wind speed in Riverside County during May is 18 km/h, suggesting breezy to windy conditions, depending on your activities.

May rainfall patterns in Riverside County

Explore the daily rainfall trends and prepare for Riverside Countys May weather 💧

UV exposure in Riverside County during May

Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️

Top locations in Riverside County

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Corona Moreno Valley Palm Springs Riverside

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Where is Riverside County?

Get accurate weather forecasts for Riverside County, located at latitude 33.953 and longitude -117.396. Stay updated with localized weather information tailored for Riverside County.

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Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
					1 22°	2 22°
3 21°	4 17°	5 16°	6 19°	7 23°	8 26°	9 28°
10 29°	11 27°	12 27°	13 25°	14 27°	15 27°	16 26°
17 24°	18 25°	19 27°	20 28°	21 29°	22 28°	23 25°
24 22°	25 22°	26 24°	27 26°	28 26°	29 26°	30 29°
31 27°

Weather in Riverside County, California for May 2026

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