Ontario, California Weather:
Wednesday, January 28, 2026
Cloudy Weather
Day 73°
Night 48°
Precipitation 0 %
Wind 1 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 %