This page presents a long range weather forecast for Rancho Cucamonga in May as well as other months. You can quickly get a brief overview of the weather to expect in May on a daily basis.
The Rancho Cucamonga extended forecast data provided is based on the average values of previous years.
Long range weather forecast
Select a month and click on a day for more information:
Wednesday
May 1
26° / 13°
Thursday
May 2
23° / 11°
Friday
May 3
25° / 11°
Saturday
May 4
24° / 12°
Sunday
May 5
18° / 11°
Monday
May 6
24° / 9°
Tuesday
May 7
24° / 11°
Wednesday
May 8
25° / 13°
Thursday
May 9
24° / 13°
Friday
May 10
24° / 13°
Saturday
May 11
25° / 14°
Sunday
May 12
26° / 15°
Monday
May 13
23° / 14°
Tuesday
May 14
24° / 13°
Wednesday
May 15
20° / 14°
Thursday
May 16
22° / 13°
Friday
May 17
25° / 11°
Saturday
May 18
28° / 12°
Sunday
May 19
29° / 15°
Monday
May 20
26° / 14°
Tuesday
May 21
26° / 12°
Wednesday
May 22
26° / 12°
Thursday
May 23
28° / 13°
Friday
May 24
29° / 15°
Saturday
May 25
29° / 15°
Sunday
May 26
28° / 14°
Monday
May 27
26° / 13°
Tuesday
May 28
27° / 15°
Wednesday
May 29
27° / 14°
Thursday
May 30
27° / 14°
Friday
May 31
27° / 15°
Rancho Cucamonga 30 days weather forecast
Check out our estimated 30 days weather forecast for Rancho Cucamonga, this data is based on the average weather in Rancho Cucamonga in the last few years.
For a more accurate and detailed forecast, check out the 14 day weather for Rancho Cucamonga next to the desired date.