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

70°F

21°C

Humidity 65%
Wind Speed WNW 0 MPH
Barometer 29.77 in (1008.13 mb)
Dewpoint 58°F (14°C)
Visibility NA
Last update 23 Aug 12:55 AM PDT
Extended Forecast for

Rancho Santa Margarita CA

Heat Advisory August 23, 01:14am until August 23, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 23, 01:14am until August 23, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • Overnight

    Low: 69 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of showers and thunderstorms. Sunny, with a high near 94. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 94 °F

    Slight Chance
    T-storms

  • 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 93. Calm wind becoming west around 5 mph in the afternoon.

    High: 93 °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 90.

    High: 90 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Clear, with a low around 66.

    Low: 66 °F

    Clear

  • Tuesday

    Tuesday: Patchy fog before 11am. Otherwise, sunny, with a high near 87.

    High: 87 °F

    Patchy Fog
    then Mostly
    Sunny

Detailed Forecast

Overnight
Mostly clear, with a low around 69. Calm wind.
Saturday
A slight chance of showers and thunderstorms. Sunny, with a high near 94. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 20%.
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 93. 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 90.
Monday Night
Clear, with a low around 66.
Tuesday
Patchy fog before 11am. Otherwise, sunny, with a high near 87.
Tuesday Night
Clear, with a low around 64.
Wednesday
A slight chance of showers and thunderstorms after 11am. Patchy fog before 11am. Otherwise, sunny, with a high near 86.
Wednesday Night
Clear, with a low around 64.
Thursday
Patchy fog. Otherwise, sunny, with a high near 86.
Thursday Night
Patchy fog. Otherwise, clear, with a low around 63.
Friday
Patchy fog. Otherwise, sunny, with a high near 84.
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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:
9:09 pm PDT Aug 22, 2025
Forecast Valid:
1am PDT Aug 23, 2025-6pm PDT Aug 29, 2025
 
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