Ontario, California Weather:
Tuesday, July 28, 2026
Sunny Weather
Day 93°
Night 66°
Precipitation 1 %
Wind 5 mph
UV Index (0 - 11+) 11
Weather Forecast History
Last Year's Weather on This Day (July 28, 2025)
Cloudy Weather

Day

86°

Night

59°

Wind

8 mph

UV Index

11

Precipitation

0 %