Ontario, California Weather:
Friday, March 20, 2026
Sunny Weather
Day 66°
Night 45°
Precipitation 20 %
Wind 6 mph
UV Index (0 - 11+) 6
Weather Forecast History
Last Year's Weather on This Day (March 20, 2025)
Cloudy Weather

Day

73°

Night

50°

Wind

6 mph

UV Index

6

Precipitation

0 %