Flights to Decatur, IL, United States

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Cheap flights to Decatur

Weather in Decatur

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January1°C-6°C
February3°C-4°C
March11°C2°C
April16°C7°C
May22°C13°C
June27°C17°C
July28°C19°C
August28°C18°C
September25°C15°C
October18°C9°C
November10°C2°C
December4°C-1°C
Hottest Month
28°C
July
Coldest month
-6°C
January
Sunny days
265
days per year
Snow days
11
days per year

14 day forecast

Saturday
21 Jun
36°C23°C
28 Jun
69%
32°C23°C
Sunday
22 Jun
37°C23°C
29 Jun
87%
31°C21°C
Monday
23 Jun
36°C23°C
30 Jun
28°C21°C
Tuesday
24 Jun
72%
33°C23°C
1 Jul
84%
26°C17°C
Wednesday
25 Jun
76%
30°C22°C
2 Jul
27°C15°C
Thursday
26 Jun
83%
31°C21°C
3 Jul
29°C18°C
Friday
27 Jun
30°C21°C
4 Jul
31°C20°C

Cheapest month to fly to Decatur

Explore price trends for trips to Decatur

Showing prices in USD

Annual Avg. Price101 USD
July 2025101 USD
August 2025101 USD
September 2025101 USD
October 2025101 USD
November 2025101 USD
December 2025101 USD
January 2026101 USD
February 2026101 USD
March 2026101 USD
April 2026101 USD
May 2026101 USD

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