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Ontario, California Weather:
Wednesday, January 28, 2026
Sunny Weather
Day 61°
Night 39°
Precipitation 5 %
Wind 5 mph
UV Index (0 - 11+) 4
Weather Forecast History
Last Year's Weather on This Day (January 28, 2025)
Cloudy Weather

Day

57°

Night

45°

Wind

6 mph

UV Index

4

Precipitation

1 %