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Weather in Riverside County for May 2025

Your guide to Riverside County weather in May - trends and predictions
  • In general, the average temperature in Riverside County at the beginning of May is 20.1 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 23.9 °F by the end of May.

  • With an average of 3 rainy days, Riverside County experiences minimal rainfall in May.

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Average dry days
28
Dry days
Average rainy days
3
Rainy days
Average snowy days
0
Snow days
Average temperatures
25°/12°
Temperatures
Average wind speed
18 km/h
Avg max wind
Average humidity
55 %
Avg humidity

Riverside County in May average weather

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Temperatures trend during May in Riverside County

See the weather trend as well as the moving average line

May weather day by day

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Date Weather Temperatures Rain UV More
May 1 Patchy rain possible
Patchy rain possible
21° /13° 0.2 mm 5
May 2 Patchy rain possible
Patchy rain possible
22° /12° 0.3 mm 6
May 3 Patchy rain possible
Patchy rain possible
22° /12° 0.4 mm 5
May 4 Moderate or heavy rain shower
Moderate or heavy rain shower
18° /12° 5.7 mm 5
May 5 Patchy rain possible
Patchy rain possible
16° /11° 1.9 mm 4
May 6 Overcast
Overcast
20° /10° 0 mm 5
May 7 Cloudy
Cloudy
22° /12° 0 mm 6
May 8 Sunny
Sunny
24° /12° 0 mm 6
May 9 Partly cloudy
Partly cloudy
24° /13° 0.1 mm 7
May 10 Overcast
Overcast
24° /13° 0 mm 6
May 11 Sunny
Sunny
25° /13° 0 mm 7
May 12 Sunny
Sunny
28° /14° 0 mm 7
May 13 Sunny
Sunny
30° /16° 0 mm 8
May 14 Sunny
Sunny
28° /15° 0 mm 7
May 15 Partly cloudy
Partly cloudy
27° /15° 0 mm 7
May 16 Sunny
Sunny
27° /15° 0 mm 7
May 17 Sunny
Sunny
28° /15° 0 mm 7
May 18 Sunny
Sunny
26° /15° 0 mm 7
May 19 Cloudy
Cloudy
25° /14° 0 mm 6
May 20 Overcast
Overcast
25° /13° 0 mm 6
May 21 Cloudy
Cloudy
26° /14° 0 mm 6
May 22 Sunny
Sunny
26° /15° 0 mm 7
May 23 Partly cloudy
Partly cloudy
23° /13° 0 mm 6
May 24 Cloudy
Cloudy
21° /13° 0.1 mm 5
May 25 Cloudy
Cloudy
22° /13° 0.1 mm 5
May 26 Partly cloudy
Partly cloudy
23° /12° 0.1 mm 6
May 27 Partly cloudy
Partly cloudy
25° /13° 0 mm 7
May 28 Overcast
Overcast
25° /14° 0 mm 6
May 29 Cloudy
Cloudy
24° /15° 0 mm 6
May 30 Patchy rain possible
Patchy rain possible
25° /15° 0.4 mm 6
May 31 Patchy rain possible
Patchy rain possible
23° /15° 0.6 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.

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 25° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Riverside County during May?
Expect minimal rainfall in Riverside County during May, with a total of 19.3 mm over approximately 3 days. This minimal precipitation is unlikely to significantly impact plans.
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 ☀️
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Location coordinates 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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