Ontario, California Weather:
Monday, March 16, 2026
Sunny Weather
Day 68°
Night 45°
Precipitation 20 %
Wind 6 mph
UV Index (0 - 11+) 6
Weather Forecast History
Last Year's Weather on This Day (March 16, 2025)
Cloudy Weather

Day

72°

Night

48°

Wind

4 mph

UV Index

6

Precipitation

0 %