Current Conditions

Rancho Santa Margarita, California

73°F23°C
Clear

Wind

WNW 4 mph7 km/h

Humidity

63%

Cloud Cover

41%

As of Tuesday, September 22, 2026 at 11:48 AM PDT

Today's Outlook

Day

Mostly clear and warm, with a high of 78°F26°C and morning low of 73°F23°C. Breezy from the W at 7 to 10 mph12 to 16 km/h.

Night

Mostly clear, with a low around 68°F20°C. Light wind from the W around 3 mph5 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
ClearHigh 78°F26°CLow 68°F20°CPrecip 0 in0 mmCloud 11%Wind W 6 mph9 km/hTuesday: Mostly clear and warm, with a high of 78°F26°C and morning low of 73°F23°C. Breezy from the W at 7 to 10 mph12 to 16 km/h. Tuesday Night: Mostly clear, with a low around 68°F20°C. Light wind from the W around 3 mph5 km/h.
ClearHigh 83°F28°CLow 65°F18°CPrecip 0 in0 mmCloud 13%Wind SW 4 mph6 km/hWednesday: Mostly clear and warm, with a high of 83°F28°C and morning low of 68°F20°C. Breezy from the WSW at 5 to 8 mph8 to 13 km/h. Wednesday Night: Mostly clear, with a low around 65°F18°C. Light wind from the S around 2 mph4 km/h.
ClearHigh 82°F28°CLow 67°F19°CPrecip 0 in0 mmCloud 20%Wind WSW 4 mph6 km/hThursday: Mostly clear and warm, with a high of 82°F28°C and morning low of 69°F20°C. Breezy from the WSW at 5 to 8 mph8 to 12 km/h. Thursday Night: Mostly clear, with a low around 67°F19°C. Light wind from the SW around 2 mph4 km/h.
Partly CloudyHigh 86°F30°CLow 67°F20°CPrecip 0 in0 mmCloud 48%Wind W 4 mph6 km/hFriday: Partly cloudy and warm, with a high of 86°F30°C and morning low of 70°F21°C. Breezy from the W at 5 to 7 mph8 to 12 km/h. Friday Night: Partly cloudy, with a low around 67°F20°C. Light wind from the W around 2 mph4 km/h.
Partly CloudyHigh 87°F30°CLow 68°F20°CPrecip 0 in0 mmCloud 74%Wind WSW 3 mph6 km/hSaturday: Mostly cloudy and hot, with a high of 87°F30°C and morning low of 70°F21°C. Breezy from the WSW at 4 to 7 mph7 to 11 km/h. Saturday Night: Mostly cloudy, with a low around 68°F20°C. Light wind from the SSW around 2 mph4 km/h.
DrizzleHigh 80°F27°CLow 69°F21°CPrecip 0.06 in1.5 mm19%Cloud 73%Wind WSW 4 mph6 km/hSunday: Mostly cloudy and warm, with a high of 80°F27°C and morning low of 71°F22°C. Light wind from the SW around 5 mph7 km/h. 19% chance of drizzle throughout the day. Sunday Night: Mostly cloudy, with a low around 69°F21°C. Light wind from the WSW around 3 mph5 km/h. 13% chance of drizzle throughout the night.
DrizzleHigh 80°F27°CLow 68°F20°CPrecip 0.1 in2.5 mm20%Cloud 45%Wind W 4 mph6 km/hMonday: Partly cloudy and warm, with a high of 80°F27°C and morning low of 69°F21°C. Breezy from the WSW at 5 to 7 mph8 to 11 km/h. 20% chance of drizzle throughout the day. Monday Night: Partly cloudy, with a low around 68°F20°C. Light wind from the WNW around 3 mph5 km/h. 16% chance of drizzle throughout the night.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
TuesdaySep 2278°F26°C68°F20°C0 in0 mm· —11%ClearW 6 mph9 km/h
WednesdaySep 2383°F28°C65°F18°C0 in0 mm· —13%ClearSW 4 mph6 km/h
ThursdaySep 2482°F28°C67°F19°C0 in0 mm· —20%ClearWSW 4 mph6 km/h
FridaySep 2586°F30°C67°F20°C0 in0 mm· —48%Partly CloudyW 4 mph6 km/h
SaturdaySep 2687°F30°C68°F20°C0 in0 mm· —74%Partly CloudyWSW 3 mph6 km/h
SundaySep 2780°F27°C69°F21°C0.06 in1.5 mm· 19%73%DrizzleWSW 4 mph6 km/h
MondaySep 2880°F27°C68°F20°C0.1 in2.5 mm· 20%45%DrizzleW 4 mph6 km/h
TuesdaySep 2984°F29°C66°F19°C0.08 in2.1 mm· 14%29%DrizzleW 4 mph6 km/h
WednesdaySep 3084°F29°C68°F20°C0.11 in2.8 mm· 12%33%DrizzleWSW 4 mph6 km/h
ThursdayOct 184°F29°C68°F20°C0.05 in1.2 mm· 11%31%DrizzleWSW 4 mph6 km/h
FridayOct 284°F29°C68°F20°C0.01 in0.3 mm· 4%28%ClearSW 4 mph7 km/h
SaturdayOct 385°F30°C68°F20°C0 in0.1 mm· 3%23%ClearSW 4 mph7 km/h
SundayOct 484°F29°C68°F20°C0.02 in0.6 mm· 5%27%ClearSW 4 mph6 km/h
MondayOct 585°F29°C68°F20°C0.02 in0.6 mm· 7%25%ClearW 4 mph6 km/h
TuesdayOct 686°F30°C68°F20°C0.02 in0.5 mm· 6%25%ClearW 4 mph7 km/h

Nearby Cities

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

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Coordinates: 33.6409°N, 117.6031°W·Elevation: 289m·Timezone: America/Los_Angeles·Population: 49,324