Ontario, California Weather:
Saturday, July 18, 2026
Cloudy Weather
Day 91°
Night 64°
Precipitation 2 %
Wind 6 mph
Weather Forecast History
Last Year's Weather on This Day (July 18, 2025)
Partly Sunny with Showers

Day

84°

Night

63°

Wind

7 mph

UV Index

11

Precipitation

49 %