San Marcos, California Weather:
Thursday, September 24, 2026
Cloudy Weather
Day 88°
Night 70°
Precipitation 2 %
Wind 5 mph
UV Index (0 - 11+) 5
Weather Forecast History
Last Year's Weather on This Day (September 24, 2025)
Cloudy Night

Day

79°

Night

64°

Wind

4 mph

Precipitation

1 %