Ontario, California Weather:
Friday, August 14, 2026
Sunny Weather
Day 88°
Night 64°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 10
Weather Forecast History
Last Year's Weather on This Day (August 14, 2025)
Cloudy Night

Day

88°

Night

61°

Wind

6 mph

Precipitation

0 %