Ontario, California Weather:
Sunday, March 15, 2026
Cloudy Weather
Day 66°
Night 43°
Precipitation 10 %
Wind 4 mph
UV Index (0 - 11+) 6
Weather Forecast History
Last Year's Weather on This Day (March 15, 2025)
Cloudy Weather

Day

63°

Night

43°

Wind

6 mph

UV Index

6

Precipitation

1 %