Saturday
Patchy fog
High:
82°F
Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 82. Light southwest wind increasing to 5 to 10 mph in the afternoon.
Rancho Cucamonga, CA Weather - Extended Forecast
Saturday Night
Chance of showers
Overnight low:
63°F
A chance of showers, mainly after 11pm. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.
Sunday
Heavy rain
High:
75°F
Showers likely, mainly after 11am. The rain could be heavy at times. Mostly cloudy, with a high near 75. Chance of precipitation is 60%.
Sunday Night
Showers likely
Overnight low:
55°F
Showers likely. Mostly cloudy, with a low around 55.
Columbus Day
Showers likely
High:
67°F
Monday Night
Chance of showers
Overnight low:
51°F
Tuesday
Chance of showers
High:
70°F
Tuesday Night
Chance of showers
Overnight low:
52°F
Wednesday
Chance of showers and thunderstorms
High:
75°F