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Ontario, California Weather:
Monday, January 12, 2026
Sunny Weather
Day 64°
Night 41°
Precipitation 20 %
Wind 7 mph
UV Index (0 - 11+) 3
Weather Forecast History
Last Year's Weather on This Day (January 12, 2025)
Sunny Weather

Day

64°

Night

48°

Wind

11 mph

UV Index

3

Precipitation

0 %