Flights to Belleville, IL, United States

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Weather in Belleville

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January3°C-3°C
February6°C-2°C
March13°C3°C
April18°C8°C
May23°C14°C
June29°C19°C
July30°C20°C
August29°C19°C
September26°C16°C
October19°C10°C
November12°C3°C
December7°C0°C
Hottest Month
30°C
July
Coldest month
-3°C
January
Sunny days
264
days per year
Snow days
9
days per year

14 day forecast

Saturday
5 Jul
36°C21°C
12 Jul
77%
29°C21°C
Sunday
6 Jul
83%
36°C23°C
13 Jul
29°C18°C
Monday
7 Jul
88%
29°C23°C
14 Jul
70%
30°C20°C
Tuesday
8 Jul
64%
35°C23°C
15 Jul
77%
28°C20°C
Wednesday
9 Jul
87%
33°C22°C
16 Jul
31°C21°C
Thursday
10 Jul
66%
32°C21°C
17 Jul
87%
33°C23°C
Friday
11 Jul
34°C23°C
18 Jul
65%
23°C17°C

Cheapest month to fly to Belleville

Explore price trends for trips to Belleville

Annual Avg. Price291 GBP
August 2025254 GBP
September 2025251 GBP
October 2025278 GBP
November 2025323 GBP
December 2025280 GBP
January 2026294 GBP
February 2026361 GBP

Direct flights to Belleville

Find direct flights from anywhere to Belleville

Frequently asked questions

Main airports in Belleville, Illinois
Getting from the airport to Belleville, Illinois
Best time of the year to fly to Belleville, Illinois
Things to do in Belleville, Illinois
When to book your flight to Belleville, Illinois
Ideal duration for a stay in Belleville, Illinois
Top tourist attractions in Belleville, Illinois
Safety walking at night in Belleville, Illinois
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