Riverside, California Weather:
Friday, September 18, 2026
Sunny Weather
Day 99°
Night 64°
Precipitation 1 %
Wind 7 mph
UV Index (0 - 11+) 7
Weather Forecast History
Last Year's Weather on This Day (September 18, 2025)
Stormy Weather

Day

88°

Night

70°

Wind

5 mph

Precipitation

55 %