Mount Vernon weather in September (Illinois, United States of America)
Curious about the climate in Mount Vernon this September? Discover if this is the best time for your journey with our detailed monthly weather breakdown.
Temperatures
Expect perfect weather in Mount Vernon during September, which means high temperatures and moderate rainfall. The daytime often sees temperatures reaching 26°C, but nighttime brings a cool-down to 14°C.
Precipitation
Mount Vernon in September usually receives moderate rainfall, averaging around 86 mm for the month. Analyzing past climate data, one can expect approximately 9 days of rain.So this is a great month to visit if you prefer dry days with pleasant temperatures. September and October typically offer the most optimal weather. In contrast, January, February, March and December tend to have less optimal conditions.
For an in-depth look at the yearly conditions, visit our specialized Mount Vernon climate page with graphs.
Mount Vernon, monthly averages in September
Min Temperature
14°C
Max Temperature
26°C
Chance of Rain
30%
Precipitation
86 mm
Rainy days
9 days
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. However, there's a good chance of rain, so bring a raincoat just in case.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 Mount Vernon.
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.
