The weather in Rancho Cucamonga in July is hot. The average temperatures are between 69°F and 87°F.
There shouldn't be any rainy days in in Rancho Cucamonga during July. Having said that, the days are very hot in July so hanging out outside is more recomanded during the after noons and evening time.
Our weather forecast can give you a great sense of what weather to expect in Rancho Cucamonga in July 2025.
If you’re planning to visit Rancho Cucamonga in the near future, we highly recommend that you review the 14 day weather forecast for Rancho Cucamonga before you arrive.
Temperatures
87° / 69°
Rainy Days
0
Snowy Days
0
Dry Days
31
Rainfall
0.39
in
Sun Hours
12.0
Hrs
