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Lake San Marcos, California

Current conditions and the National Weather Service 7-day forecast for Lake San Marcos, California — temperature, rain chance, wind, radar and active alerts.

Wednesday Sep 16: a high near 76°F and a low around 62°F. Highs over the period run 76°F to 79°F.

National Weather Service forecast for Lake San Marcos, California
DayHighLowPrecip
Wednesday Sep 1676°62°
Thursday Sep 1776°60°
Friday Sep 1877°61°
Saturday Sep 1979°62°
Sunday Sep 2078°62°
Monday Sep 2177°61°
Tuesday Sep 2279°

NOAA NWS NDFD 2.5 km, run 2026-09-16 16:00 UTC · days are local time in America/Los Angeles. The live page updates continuously.

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