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Rancho Santa Margarita, California Weather Forecast
Rancho Santa Margarita, California Weather
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Weather Forecast for Rancho Santa Margarita, California : Orange County
Issued: 12:56 pm PST Dec 17, 2025 Latitude: 33.640855 Longitude: -117.603104 View on Google Maps

MouseOver for Detail Forecast
Overnight Thursday Friday Saturday Sunday Monday Tuesday Wednesday
Mostly Clear on Overnight Sunny on Thursday Sunny on Friday Mostly Sunny on Saturday Partly Sunny on Sunday Morning Fog on Monday 10% chance of rain on Tuesday Rain on Wednesday
Low: 55°F High: 79°F High: 76°F High: 71°F High: 72°F High: 71°F High: 68°F High: 67°F
Low: 56°F Low: 53°F Low: 54°F Low: 52°F Low: 52°F Low: 54°F  
Mostly Clear Sunny Sunny Mostly Sunny Partly Sunny Morning Fog Rain Rain
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Current Conditions at
SANTA ANA - (KSNA)
55°
Clear
Mist
as of 12:53 AM PST
Rel. Humidity: 93%
Dew Point: 54°F
Visibility: 3 Miles
Pressure: 29.94 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
CHINO - (KCNO)
50°
Clear
Mist
as of 1:03 AM PST
Rel. Humidity: 93%
Dew Point: 48°F
Visibility: 3 Miles
Pressure: 29.97 in.
Flight Rule: MVFR
Wind Data
3 MPH
090° East
Cloud Level(s): Clear
Current Conditions at
RIVERSIDE - (KRAL)
50°
Clear
Mist
as of 12:53 AM PST
Rel. Humidity: 87%
Dew Point: 46°F
Visibility: 6 Miles
Pressure: 29.96 in.
Flight Rule: VFR
Wind Data
3 MPH
100° East
Cloud Level(s): Clear
Current Conditions at
MARCH AFB - (KRIV)
48°
Clear
as of 12:55 AM PST
Rel. Humidity: 76%
Dew Point: 41°F
Visibility: 10 Miles
Pressure: 29.95 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Mostly Clear on Overnight Overnight... Mostly clear, with a low around 55. East wind around 5 mph.
Sunny on Thursday Thursday... Sunny, with a high near 79. Calm wind becoming west around 5 mph.
Mostly Clear on Thursday Night Thursday Night... Mostly clear, with a low around 56. Calm wind.
Sunny on Friday Friday... Sunny, with a high near 76. Calm wind becoming southwest around 5 mph.
Mostly Clear on Friday Night Friday Night... Mostly clear, with a low around 53. Calm wind.
Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 71.
Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 54.
Partly Sunny on Sunday Sunday... Partly sunny, with a high near 72.
Patchy Fog on Sunday Night Sunday Night... Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 52.
Morning Fog on Monday Monday... Patchy fog before 10am. Otherwise, partly sunny, with a high near 71.
Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 52.
10% chance of rain Tuesday Tuesday... A slight chance of showers. Mostly cloudy, with a high near 68.
20% chance of rain Tuesday Night Tuesday Night... A chance of showers. Mostly cloudy, with a low around 54.
Rain on Wednesday Wednesday... Showers likely. Cloudy, with a high near 67.
Current Radar Image


Sun Almanac for Rancho Santa Margarita, California
Sunrise: 06:50 AM
Sunset: 4:45 PM
Civil Sunrise:06:22 AM
Civil Sunset: 5:12 PM
Nautical Sunrise: 05:51 AM
Nautical Sunset: 5:44 PM
Astro Sunrise: 05:21 AM
Astro Sunset: 6:14 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.