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

83°F

28°C

Humidity 44%
Wind Speed NNE 3 MPH
Barometer NA
Dewpoint 59°F (15°C)
Visibility NA
Heat Index83°F (28°C)
Last update 09 Sep 01:16 AM PDT
Extended Forecast for

6 Miles SE Corona CA

Heat Advisory September 9, 08:00pm until September 10, 08:00pm
Extreme Heat Warning September 9, 02:21am until September 9, 08:00pm
Click here for hazard details and duration
Heat Advisory
Extreme Heat Warning
  •  
    Extreme Heat Warning September 9, 02:21am until September 9, 08:00pm

    NOW until 8:00pm Wed

    Extreme Heat Warning

  • Overnight

    Low: 75 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 109. Heat index values as high as 118. Light and variable wind becoming southeast 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 109 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 75. West wind 5 to 10 mph becoming light and variable in the evening.

    Low: 75 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 104. Heat index values as high as 113. Light north wind becoming northwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 104 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 71. North wind around 5 mph becoming calm in the evening.

    Low: 71 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 97.

    High: 97 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

Detailed Forecast

Overnight
Mostly clear, with a low around 75. Calm wind.
Wednesday
Sunny, with a high near 109. Heat index values as high as 118. Light and variable wind becoming southeast 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Wednesday Night
Partly cloudy, with a low around 75. West wind 5 to 10 mph becoming light and variable in the evening.
Thursday
Sunny, with a high near 104. Heat index values as high as 113. Light north wind becoming northwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Mostly clear, with a low around 71. North wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 97.
Friday Night
Mostly clear, with a low around 64.
Saturday
Sunny, with a high near 91.
Saturday Night
Mostly clear, with a low around 59.
Sunday
Sunny, with a high near 88.
Sunday Night
Mostly clear, with a low around 58.
Monday
Sunny, with a high near 89.
Monday Night
Clear, with a low around 56.
Tuesday
Sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SE Corona CA
 33.81°N 117.51°W (Elev. 965 ft)
Last Update:
1:36 am PDT Sep 9, 2026
Forecast Valid:
2am PDT Sep 9, 2026-6pm PDT Sep 15, 2026
 
Forecast Discussion
 
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Additional Resources

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