Ontario, California Weather:
Friday, June 19, 2026
Cloudy Weather
Day 84°
Night 61°
Precipitation 10 %
Wind 2 mph
UV Index (0 - 11+) 11
Weather Forecast History
Last Year's Weather on This Day (June 19, 2025)
Sunny Weather

Day

86°

Night

59°

Wind

8 mph

UV Index

12

Precipitation

1 %