Rancho Cucamonga, California Weather:
Wednesday, June 17, 2026
Sunny Weather
Day 88°
Night 61°
Precipitation 0 %
Wind 6 mph
Weather Forecast History
Last Year's Weather on This Day (June 17, 2025)
Sunny Weather

Day

95°

Night

64°

Wind

8 mph

UV Index

12

Precipitation

0 %