Diamond Bar weather in September (California, United States of America)
How is September weather typically in Diamond Bar? Get all the weather information you need to plan your visit.
Temperatures
The weather in Diamond Bar during September is usually perfect, offering very high temperatures and almost no rainfall. September is known for being in the summer season. Anticipate daytime highs near 32°C, and cooler nights with temperatures around 17°C. Typical temperatures can be misleading; some days will be hotter. Prepare with light clothing and plenty of hydration to stay cool.
Precipitation
Diamond Bar in September usually receives almost no rainfall, averaging around 4.9 mm for the month. You can typically expect a single day days of rain this month, based on climate records.Average sunshine
Enjoy a sunny month with about 290 hours of sunshine, providing a cheerful and lively atmosphere.If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit. January, February, March, April, May, June, July, August, September, October and November generally stand out with the best circumstances. While December tends to showcase less optimal conditions.
For an in-depth look at the yearly conditions, visit our specialized Diamond Bar climate page with graphs.
Diamond Bar, monthly averages in September
Min Temperature
17°C
Max Temperature
32°C
Chance of Rain
3%
Precipitation
4.9 mm
Rainy days
a single day
Sunshine
290 hours *
Percentage Sunshine
*
Where to go 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.
perfect weather
pleasant
tolerable
unpleasant
poor
So, what should you wear in this month?
It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool.What To Do
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Interested in more climate information?
This site provides you with all the information you need about the climate in Diamond Bar.
Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.
