Rancho Cucamonga Weather Forecast for Tomorrow

Friday

High:
70°F
(21°C)

A 20 percent chance of rain before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 70. Light southwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

Friday Night

Mostly clear

Mostly clear

Low:
55°F
(13°C)

Mostly clear, with a low around 55. Southwest wind around 5 mph becoming calm after midnight.