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

Hazardous Weather Conditions

Current conditions at

CW5283 Foothill Ranch (C5283)

Lat: 33.685°NLon: 117.65583°WElev: 986.91ft.

NA

75°F

24°C

Humidity 72%
Wind Speed ENE 0 MPH
Barometer 29.72 in (1006.44 mb)
Dewpoint 65°F (18°C)
Visibility NA
Last update 28 Aug 03:27 AM PDT
Extended Forecast for

Rancho Santa Margarita CA

Extreme Heat Warning August 28, 09:40am until August 28, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning August 28, 09:40am until August 28, 08:00pm

    NOW until 8:00pm Fri

    Extreme Heat Warning

  • Today

    High: 101 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 69. West wind around 5 mph becoming calm.

    Low: 69 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 96. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.

    High: 96 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 66. Calm wind becoming southeast around 5 mph.

    Low: 66 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 90. Southeast wind 5 to 10 mph becoming southwest in the afternoon.

    High: 90 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

Detailed Forecast

Today
Mostly sunny, with a high near 101. Heat index values as high as 106. Light west wind becoming southwest 5 to 10 mph in the afternoon.
Tonight
Mostly clear, with a low around 69. West wind around 5 mph becoming calm.
Saturday
Sunny, with a high near 96. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 66. Calm wind becoming southeast around 5 mph.
Sunday
Sunny, with a high near 90. Southeast wind 5 to 10 mph becoming southwest in the afternoon.
Sunday Night
Mostly clear, with a low around 63.
Monday
Sunny, with a high near 87.
Monday Night
Mostly clear, with a low around 62.
Tuesday
Sunny, with a high near 85.
Tuesday Night
A slight chance of showers after 11pm. Mostly cloudy, with a low around 64.
Wednesday
A slight chance of showers. Partly sunny, with a high near 88.
Wednesday Night
Mostly cloudy, with a low around 65.
Thursday
A slight chance of showers. Mostly sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Rancho Santa Margarita CA
 33.64°N 117.61°W (Elev. 896 ft)
Last Update:
1:07 am PDT Aug 28, 2026
Forecast Valid:
9am PDT Aug 28, 2026-6pm PDT Sep 3, 2026
 
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Additional Resources

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