Rancho Cucamonga, California Weather:
Sunday, May 10, 2026
Sunny Weather
Day 81°
Night 57°
Precipitation 5 %
Wind 1 mph
UV Index (0 - 11+) 11
Weather Forecast History
Last Year's Weather on This Day (May 10, 2025)
Hot Day

Day

100°

Night

70°

Wind

6 mph

UV Index

11

Precipitation

0 %