Rancho Cucamonga, California Weather:
Monday, October 12, 2026
Sunny Weather
Day 79°
Night 59°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 5
Weather Forecast History
Last Year's Weather on This Day (October 12, 2025)
Sunny Weather

Day

81°

Night

54°

Wind

6 mph

UV Index

50

Precipitation

0 %