Rancho Cucamonga Weather in September
September is one of the perfect months to visit Rancho Cucamonga, with daytime temperatures of 33°C (91°F) and lows of 17°C (63°F) at night. Rainfall is minimal, averaging just 4.8 mm (0.2 in) for the month.
Rainfall in Rancho Cucamonga in September
On average, there are about a single day with rain during this month, averaging 4.8 mm (0.2 in). On the rare occasion it rains, expect a brief, moderate shower rather than a heavy downpour.
Temperature in Rancho Cucamonga in September
Rancho Cucamonga in September has perfect weather. Days reach 33°C (91°F) and nights cool to 17°C (63°F). The hottest part of the day is usually in the afternoon, so lighter clothing can help you stay comfortable. Nights drop to around 17°C (63°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.
Sunshine in Rancho Cucamonga in September
Expect a lot of sunshine this month, with about 290 hours of sun. These sunny conditions add to the overall experience.Our weather planner can help you find worldwide destinations with pleasant weather during this period. January, February, March, April, May, October and November typically offer the best weather for Rancho Cucamonga.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Rancho Cucamonga's climate page.
Rancho Cucamonga Temperature in September
Min Temperature
17°C (63°F)
Max Temperature
33°C (91°F)
Chance of Rain
3%
Precipitation
4.8 mm (0.2 in)
Rainy days
a single day
Sunshine
290 hours *
Percentage Sunshine
*
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
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What to Wear in Rancho Cucamonga in September
Warm but pleasant conditions in Rancho Cucamonga in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Dry conditions mean you won't need to worry about rain protection. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Rancho Cucamonga in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Rancho Cucamonga's climate page.
See the full Rancho Cucamonga climate overview or explore weather in the United States of America.
