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

CW5283 Foothill Ranch (C5283)

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

NA

70°F

21°C

Humidity 80%
Wind Speed NW 0 MPH
Barometer 29.8 in (1009.14 mb)
Dewpoint 64°F (18°C)
Visibility NA
Last update 10 Aug 01:25 AM PDT
Extended Forecast for

Rancho Santa Margarita CA

  • Overnight

    Overnight: Patchy dense fog after 2am. Otherwise, mostly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Patchy Dense
    Fog

  • Monday

    Monday: Patchy dense fog before 8am. Otherwise, mostly sunny, with a high near 88. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 88 °F

    Patchy Dense
    Fog then
    Sunny

  • Monday Night

    Monday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 63. Southwest wind around 5 mph becoming calm in the evening.

    Low: 63 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 11am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 86. Calm wind becoming west around 5 mph in the afternoon.

    High: 86 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 62. Southwest wind around 5 mph becoming calm in the evening.

    Low: 62 °F

    Patchy Fog

  • Wednesday

    Wednesday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 61.

    Low: 61 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Partly sunny, with a high near 82.

    High: 82 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

Detailed Forecast

Overnight
Patchy dense fog after 2am. Otherwise, mostly cloudy, with a low around 64. Calm wind.
Monday
Patchy dense fog before 8am. Otherwise, mostly sunny, with a high near 88. Calm wind becoming southwest around 5 mph in the afternoon.
Monday Night
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 63. Southwest wind around 5 mph becoming calm in the evening.
Tuesday
Patchy fog before 11am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 86. Calm wind becoming west around 5 mph in the afternoon.
Tuesday Night
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 62. Southwest wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 84.
Wednesday Night
Increasing clouds, with a low around 61.
Thursday
Partly sunny, with a high near 82.
Thursday Night
Partly cloudy, with a low around 60.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 81.
Friday Night
Partly cloudy, with a low around 60.
Saturday
Mostly sunny, with a high near 83.
Saturday Night
Partly cloudy, with a low around 61.
Sunday
Mostly sunny, with a high near 84.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Rancho Santa Margarita CA
 33.64°N 117.61°W (Elev. 896 ft)
Last Update:
12:20 pm PDT Aug 9, 2026
Forecast Valid:
1am PDT Aug 10, 2026-6pm PDT Aug 16, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation