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ZIP 92678 · Rancho Santa Margarita, California

Current conditions and the National Weather Service 7-day forecast for ZIP code 92678, Rancho Santa Margarita, California — temperature, rain chance, wind, radar and alerts.

Saturday Aug 29 night: a low around 72°F. Sunday Aug 30: a high near 86°F and a low around 66°F. Highs over the period run 81°F to 87°F.

National Weather Service forecast for ZIP 92678, Rancho Santa Margarita, California
DayHighLowPrecip
Saturday Aug 2972°
Sunday Aug 3086°66°
Monday Aug 3182°65°
Tuesday Sep 181°68°
Wednesday Sep 282°68°
Thursday Sep 383°68°
Friday Sep 485°70°
Saturday Sep 587°

NOAA NWS NDFD 2.5 km, run 2026-08-30 00:00 UTC · days are local time in America/Los Angeles. The live page updates continuously.

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