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: 970.0ft.

NA

75°F

24°C

Humidity 56%
Wind Speed WNW 0 MPH
Barometer 29.76 in (1007.79 mb)
Dewpoint 58°F (14°C)
Visibility NA
Last update 22 Aug 08:55 PM PDT
Extended Forecast for

Rancho Santa Margarita CA

Heat Advisory August 22, 09:05pm until August 23, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 22, 09:05pm until August 23, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • Tonight

    Low: 69 °F

    Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 93. Calm wind becoming west around 5 mph in the afternoon.

    High: 93 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 69. Southwest wind around 5 mph becoming calm.

    Low: 69 °F

    Clear

  • Sunday

    Sunday: Patchy fog before 11am. Otherwise, sunny, with a high near 92. Calm wind becoming west around 5 mph in the afternoon.

    High: 92 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 68. West wind around 5 mph becoming calm.

    Low: 68 °F

    Clear

  • Monday

    Monday: Patchy fog before 11am. Otherwise, sunny, with a high near 89.

    High: 89 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Clear, with a low around 65.

    Low: 65 °F

    Clear

  • Tuesday

    Tuesday: Patchy fog before 11am. Otherwise, sunny, with a high near 86.

    High: 86 °F

    Patchy Fog
    then Sunny

Detailed Forecast

Tonight
Clear, with a low around 69. Calm wind.
Saturday
Mostly sunny, with a high near 93. Calm wind becoming west around 5 mph in the afternoon.
Saturday Night
Clear, with a low around 69. Southwest wind around 5 mph becoming calm.
Sunday
Patchy fog before 11am. Otherwise, sunny, with a high near 92. Calm wind becoming west around 5 mph in the afternoon.
Sunday Night
Clear, with a low around 68. West wind around 5 mph becoming calm.
Monday
Patchy fog before 11am. Otherwise, sunny, with a high near 89.
Monday Night
Clear, with a low around 65.
Tuesday
Patchy fog before 11am. Otherwise, sunny, with a high near 86.
Tuesday Night
Clear, with a low around 63.
Wednesday
A slight chance of showers and thunderstorms after 11am. Patchy fog before 11am. Otherwise, sunny, with a high near 85.
Wednesday Night
Clear, with a low around 63.
Thursday
Patchy fog. Otherwise, sunny, with a high near 85.
Thursday Night
Clear, with a low around 62.
Friday
Patchy fog. Otherwise, sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Rancho Santa Margarita CA
 33.66°N 117.61°W (Elev. 1198 ft)
Last Update:
1:10 pm PDT Aug 22, 2025
Forecast Valid:
9pm PDT Aug 22, 2025-6pm PDT Aug 29, 2025
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

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Chance of Precipitation