National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

LAKE MATHEWS (MHEC1)

Lat: 33.81694°NLon: 117.46361°WElev: 1516.0ft.

NA

78°F

26°C

Humidity 42%
Wind Speed E 7 MPH
Barometer NA
Dewpoint 53°F (12°C)
Visibility NA
Heat Index79°F (26°C)
Last update 23 Aug 12:16 AM PDT
Extended Forecast for

6 Miles SSW Riverside Municipal CA

Extreme Heat Watch August 25, 10:00am until August 28, 08:00pm
Heat Advisory August 23, 12:48am until August 25, 10:00am
Click here for hazard details and duration
Extreme Heat Watch
Heat Advisory
  •  
    Heat Advisory August 23, 12:48am until August 25, 10:00am

    NOW until 10:00am Tue

    Heat Advisory

  • Overnight

    Low: 70 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 99. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 99 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 70. Northwest wind 5 to 10 mph becoming light and variable after midnight.

    Low: 70 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 99. Light and variable wind becoming northwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 99 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 69. Northwest wind around 5 mph becoming calm in the evening.

    Low: 69 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 100.

    High: 100 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 100.

    High: 100 °F

    Sunny

Detailed Forecast

Overnight
Clear, with a low around 70. East wind around 5 mph.
Sunday
Sunny, with a high near 99. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Sunday Night
Mostly clear, with a low around 70. Northwest wind 5 to 10 mph becoming light and variable after midnight.
Monday
Sunny, with a high near 99. Light and variable wind becoming northwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Monday Night
Mostly clear, with a low around 69. Northwest wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 100.
Tuesday Night
Mostly clear, with a low around 71.
Wednesday
Sunny, with a high near 100.
Wednesday Night
Mostly clear, with a low around 72.
Thursday
Sunny, with a high near 102.
Thursday Night
Mostly clear, with a low around 72.
Friday
Mostly sunny, with a high near 103.
Friday Night
Mostly clear, with a low around 72.
Saturday
Sunny, with a high near 101.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SSW Riverside Municipal CA
 33.87°N 117.46°W (Elev. 1581 ft)
Last Update:
12:28 am PDT Aug 23, 2026
Forecast Valid:
12am PDT Aug 23, 2026-6pm PDT Aug 29, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation