Mattoon Weather in September
September in Mattoon brings high temperatures, with daytime highs of 26°C (79°F) and nights around 14°C (57°F). Quite a bit of rainfall is expected, around 82 mm (3.2 in), so pack an umbrella.
Rainfall in Mattoon in September
Looking at the last 30 years, the data shows about 9 days with rain, averaging 82 mm (3.2 in) for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Mattoon in September
Weather in Mattoon is at its perfect in September. Highs reach 26°C (79°F), while nights settle around 14°C (57°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights cool down to 14°C (57°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.Our weather planner can help you find worldwide destinations with pleasant weather during this period. September typically offers the best weather for Mattoon.
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 Mattoon's climate page.
Mattoon Temperature in September
Min Temperature
14°C (57°F)
Max Temperature
26°C (79°F)
Chance of Rain
30%
Precipitation
82 mm (3.2 in)
Rainy days
9 days
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 →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Mattoon in September
Warm but pleasant conditions in Mattoon 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. Expect heavy rainfall, so bring good rain protection and waterproof bags.What To Do in Mattoon 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 Mattoon's climate page.
See the full Mattoon climate overview or explore weather in the United States of America.
