Ontario, California Weather:
Tuesday, June 9, 2026
Sunny Weather
Day 81°
Night 57°
Precipitation 1 %
Wind 7 mph
UV Index (0 - 11+) 11
Weather Forecast History
Last Year's Weather on This Day (June 9, 2025)
Partly Sunny with Showers

Day

82°

Night

59°

Wind

7 mph

UV Index

11

Precipitation

41 %