San Marcos, California Weather:
Sunday, September 27, 2026
Cloudy Weather
Day 90°
Night 66°
Precipitation 1 %
Wind 5 mph
UV Index (0 - 11+) 6
Weather Forecast History
Last Year's Weather on This Day (September 27, 2025)
Cloudy Night

Day

73°

Night

63°

Wind

4 mph

Precipitation

25 %