Ontario, California Weather:
Saturday, May 2, 2026
Cloudy Weather
Day 79°
Night 54°
Precipitation 4 %
Wind 6 mph
UV Index (0 - 11+) 8
Weather Forecast History
Last Year's Weather on This Day (May 2, 2025)
Cloudy Weather

Day

73°

Night

54°

Wind

7 mph

UV Index

11

Precipitation

25 %