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Ontario, California Weather:
Tuesday, January 27, 2026
Cloudy Weather
Day 79°
Night 48°
Precipitation 0 %
Wind 1 mph
UV Index (0 - 11+) 2
Weather Forecast History
Last Year's Weather on This Day (January 27, 2025)
Partly Sunny with Showers

Day

57°

Night

39°

Wind

6 mph

UV Index

3

Precipitation

49 %