San Bernardino, California Weather:
Monday, May 18, 2026
Sunny Weather
Day 84°
Night 57°
Precipitation 5 %
Wind 1 mph
UV Index (0 - 11+) 11
Weather Forecast History
Last Year's Weather on This Day (May 18, 2025)
Cloudy Weather

Day

77°

Night

54°

Wind

6 mph

UV Index

11

Precipitation

4 %