Ontario, California Weather:
Saturday, November 28, 2026
Sunny Weather
Day 70°
Night 41°
Precipitation 10 %
Wind 5 mph
UV Index (0 - 11+) 3
Weather Forecast History
Last Year's Weather on This Day (November 28, 2025)
Cloudy Night

Day

72°

Night

46°

Wind

5 mph

Precipitation

0 %