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Ontario, California Weather:
Saturday, December 20, 2025
Cloudy Weather
Day 73°
Night 48°
Precipitation 8 %
Wind 2 mph
UV Index (0 - 11+) 3
Weather Forecast History
Last Year's Weather on This Day (December 20, 2024)
Sunny Weather

Day

75°

Night

48°

Wind

4 mph

UV Index

3

Precipitation

0 %