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Ontario, California Weather:
Friday, January 23, 2026
Cloudy Weather
Day 64°
Night 52°
Precipitation 30 %
Wind 4 mph
UV Index (0 - 11+) 1
Weather Forecast History
Last Year's Weather on This Day (January 23, 2025)
Sunny Weather

Day

75°

Night

46°

Wind

19 mph

UV Index

3

Precipitation

0 %