Belleville weather by month & the best time to visit
United States · small town · humid subtropical climate
The best time to visit Belleville is September — its sunniest month (Sunshine Score 78/100), with August and October close behind. Belleville averages about 2,312 hours of sunshine a year. Daytime highs around 27°C / 81°F and roughly 80 mm of rain in September.
When is the best time to visit Belleville?
For sunshine, the best time to visit Belleville is September, then August and October. The dullest month is January (0/100, 63 mm of rain). The full month-by-month picture is in the table below.
How sunny is Belleville?
Belleville gets a moderate 2,312 hours of sunshine a year. 78 Sunshine Score points separate September (78) from January (0), so the month you pick matters. It ranks #272 of 580 destinations in United States for annual sunshine, above the national median of 2,279 hours. The year's 1,106 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV |
|---|---|---|---|---|---|
| January | 0 | 4° / 39°F | -6° / 21°F | 63 mm | 2 |
| February | 0 | 6° / 43°F | -4° / 25°F | 64 mm | 2 |
| March | 31 | 13° / 55°F | 1° / 34°F | 93 mm | 4 |
| April | 70 | 20° / 68°F | 7° / 45°F | 121 mm | 6 |
| May | 69 | 24° / 75°F | 13° / 55°F | 130 mm | 6 |
| June | 73 | 29° / 84°F | 19° / 66°F | 107 mm | 8 |
| July | 74 | 31° / 88°F | 21° / 70°F | 101 mm | 8 |
| August | 75 | 31° / 88°F | 19° / 66°F | 93 mm | 7 |
| September | 78 | 27° / 81°F | 15° / 59°F | 80 mm | 6 |
| October | 75 | 20° / 68°F | 8° / 46°F | 94 mm | 4 |
| November | 32 | 13° / 55°F | 1° / 34°F | 86 mm | 2 |
| December | 0 | 6° / 43°F | -3° / 27°F | 74 mm | 1 |
Nearest destinations
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Head-to-head
How Belleville compares month by month: Belleville vs St Louis · Belleville vs Evansville · Belleville vs Bloomington/Normal · all comparisons
Belleville: questions and answers
What kind of destination is Belleville?
Belleville is a small town in United States with a humid subtropical climate.
How many hours of sunshine does Belleville get a year?
Belleville gets about 2,312 hours of sunshine a year, at its best around September.
When is the best time to visit Belleville?
The sunniest time to visit Belleville is September, when the Sunshine Score peaks at 78/100 (with August and October close behind). Expect daytime highs around 27°C / 81°F.
What is the least sunny month in Belleville?
January is the least sunny month in Belleville, scoring 0/100 with about 63 mm of rain.
How strong is the sun in Belleville?
The typical midday UV index in Belleville peaks around 8 (very high) in June, easing to about 1 (low) in December. Month-by-month midday UV values are in the UV column of the table on this page.
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