Rancho Cucamonga, California Weather:
Thursday, April 30, 2026
Sunny Weather
Day 81°
Night 55°
Precipitation 5 %
Wind 1 mph
UV Index (0 - 11+) 10
Weather Forecast History
Last Year's Weather on This Day (April 30, 2025)
Partly Sunny with Showers

Day

75°

Night

52°

Wind

7 mph

UV Index

9

Precipitation

49 %