Tustin, California Weather:
Thursday, October 1, 2026
Cloudy Weather
Day 81°
Night 63°
Precipitation 25 %
Wind 1 mph
UV Index (0 - 11+) 4
Weather Forecast History
Last Year's Weather on This Day (October 1, 2025)
Cloudy Weather

Day

79°

Night

59°

Wind

6 mph

UV Index

50

Precipitation

1 %