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Belleville IL Weather - Partly Cloudy - 83°F
Partly Cloudy
83°F
Updated 1:33 pm
Feels Like 85°F
Humidity 65%
Wind VRB 6 mph
Barometer  29.94 in
Dew Point 70°F
Belleville IL Weather - Partly Cloudy - 28°C
Partly Cloudy
28°C
Updated 1:33 pm
Feels Like 30°C
Humidity 65%
Wind VRB 10 km/h
Barometer  101.3 kPa
Dew Point 21°C
Belleville, IL Weather and Current Conditionsbelleville il weather forecast

Belleville, IL Weather Forecast

Belleville Illinois WeatherBelleville, Illinois Weather Weather Forecast
14 Day API Belleville, IL Weather Forecast. Note: Our 7 day Belleville, Illinois weather forecast is our most reliable, and specific forecast. This model should only be used as a probable scenario. Forecasting more than 7 days ahead is challenging.
Belleville, IL Weather Forecast Dated: 133 PM Fri Sep 11 2026
Expect a very warm period with plenty of sunshine and mostly dry weather over the coming period. moderate humidity and no major pressure swings will dominate.

Friday, September 11, 2026

Mid-Morning
Belleville Weather - 2026-09-11 - Morning - Scattered Showers
75°F 24°C
Scattered Showers
Mid-Afternoon
Belleville Weather - 2026-09-11 - Afternoon - Scattered Showers
83°F 28°C
Scattered Showers
Early-Evening
Belleville Weather - 2026-09-11 - Evening - Light Showers
78°F 26°C
Light Showers
Warm and summery around 83°F 28°C (feels like 87°F 31°C), periods of heavy rain and gusty conditions, with lower humidity and barometric pressure falling. Winds turning from the E to the SSW at 5 mph 9 km/h.

Saturday, September 12, 2026

Mid-Morning
Belleville Weather - 2026-09-12 - Morning - Sunny
74°F 23°C
Sunny
Mid-Afternoon
Belleville Weather - 2026-09-12 - Afternoon - Partly Cloudy
91°F 33°C
Partly Cloudy
Early-Evening
Belleville Weather - 2026-09-12 - Evening - Overcast
84°F 29°C
Overcast
Hot and sweltering around 91°F 33°C, sunny in the morning, becoming partly cloudy through the afternoon and evening, with lower humidity and steady pressure.

Sunday, September 13, 2026

Mid-Morning
Belleville Weather - 2026-09-13 - Morning - Sunny
79°F 26°C
Sunny
Mid-Afternoon
Belleville Weather - 2026-09-13 - Afternoon - Sunny
97°F 36°C
Sunny
Early-Evening
Belleville Weather - 2026-09-13 - Evening - Sunny
86°F 30°C
Sunny
Sizzling hot with 97°F 36°C, sunny throughout the day, with steady humidity and steady pressure. Winds switching from the SSW to the NE at 11 mph 18 km/h.

Monday, September 14, 2026

Mid-Morning
Belleville Weather - 2026-09-14 - Morning - Sunny
81°F 27°C
Sunny
Mid-Afternoon
Belleville Weather - 2026-09-14 - Afternoon - Partly Cloudy
100°F 38°C
Partly Cloudy
Early-Evening
Belleville Weather - 2026-09-14 - Evening - Sunny
93°F 34°C
Sunny
Dangerously hot with a high of 100°F 38°C, sunny in the morning, becoming partly cloudy through the afternoon and evening, with lower humidity and barometric pressure falling. Winds increasing from the WSW at 3 mph 4 km/h to SSE at 12 mph 19 km/h.

Tuesday, September 15, 2026

Mid-Morning
Belleville Weather - 2026-09-15 - Morning - Sunny
86°F 30°C
Sunny
Mid-Afternoon
Belleville Weather - 2026-09-15 - Afternoon - Partly Cloudy
101°F 38°C
Partly Cloudy
Early-Evening
Belleville Weather - 2026-09-15 - Evening - Cloudy
89°F 32°C
Cloudy
Scorching hot near 101°F 38°C, sunny in the morning, becoming cloudy through the afternoon and evening, with steady humidity and steady pressure. Winds swinging from the SW to the NE at 13 mph 20 km/h.

Wednesday, September 16, 2026

Mid-Morning
Belleville Weather - 2026-09-16 - Morning - Sunny
87°F 30°C
Sunny
Mid-Afternoon
Belleville Weather - 2026-09-16 - Afternoon - Overcast
88°F 31°C
Overcast
Early-Evening
Belleville Weather - 2026-09-16 - Evening - Light Showers
78°F 26°C
Light Showers
Very warm near 88°F 31°C, though humidity makes it feel like 92°F 33°C, dry most of the day, with showers developing late, with increasing humidity and steady pressure. Winds shifting from the SW to the W at 12 mph 18 km/h. Gusts up to 20 mph 32 km/h.

Thursday, September 17, 2026

Mid-Morning
Belleville Weather - 2026-09-17 - Morning - Scattered Showers
72°F 22°C
Scattered Showers
Mid-Afternoon
Belleville Weather - 2026-09-17 - Afternoon - Light Showers
66°F 19°C
Light Showers
Early-Evening
Belleville Weather - 2026-09-17 - Evening - Scattered Showers
67°F 20°C
Scattered Showers
Comfortable at 66°F 19°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure. Winds turning from the NW to the NNE at 10 mph 16 km/h. Gusts up to 21 mph 35 km/h.

Friday, September 18, 2026

Mid-Morning
Belleville Weather - 2026-09-18 - Morning - Sunny
60°F 16°C
Sunny
Mid-Afternoon
Belleville Weather - 2026-09-18 - Afternoon - Sunny
73°F 23°C
Sunny
Early-Evening
Belleville Weather - 2026-09-18 - Evening - Sunny
66°F 19°C
Sunny
Enjoyable around 73°F 23°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds out of the NE at 8 mph 13 km/h.

Saturday, September 19, 2026

Mid-Morning
Belleville Weather - 2026-09-19 - Morning - Sunny
60°F 16°C
Sunny
Mid-Afternoon
Belleville Weather - 2026-09-19 - Afternoon - Sunny
75°F 24°C
Sunny
Early-Evening
Belleville Weather - 2026-09-19 - Evening - Sunny
68°F 20°C
Sunny
Mild temperatures up to 75°F 24°C, sunny throughout the day, with lower humidity and steady pressure. Winds blowing from the NNE at 8 mph 13 km/h.

Sunday, September 20, 2026

Mid-Morning
Belleville Weather - 2026-09-20 - Morning - Sunny
62°F 17°C
Sunny
Mid-Afternoon
Belleville Weather - 2026-09-20 - Afternoon - Sunny
77°F 25°C
Sunny
Early-Evening
Belleville Weather - 2026-09-20 - Evening - Sunny
69°F 21°C
Sunny
Mild with a high of 77°F 25°C, sunny throughout the day, with lower humidity and steady pressure.

Monday, September 21, 2026

Mid-Morning
Belleville Weather - 2026-09-21 - Morning - Sunny
63°F 17°C
Sunny
Mid-Afternoon
Belleville Weather - 2026-09-21 - Afternoon - Sunny
80°F 27°C
Sunny
Early-Evening
Belleville Weather - 2026-09-21 - Evening - Sunny
72°F 22°C
Sunny
Warm and summery near 80°F 27°C, sunny throughout the day, with lower humidity and barometric pressure falling.

Tuesday, September 22, 2026

Mid-Morning
Belleville Weather - 2026-09-22 - Morning - Sunny
68°F 20°C
Sunny
Mid-Afternoon
Belleville Weather - 2026-09-22 - Afternoon - Sunny
84°F 29°C
Sunny
Early-Evening
Belleville Weather - 2026-09-22 - Evening - Overcast
77°F 25°C
Overcast
Balmy with temperatures reaching 84°F 29°C, cloudy throughout the day, with lower humidity and steady pressure.

Wednesday, September 23, 2026

Mid-Morning
Belleville Weather - 2026-09-23 - Morning - Overcast
76°F 25°C
Overcast
Mid-Afternoon
Belleville Weather - 2026-09-23 - Afternoon - Sunny
92°F 34°C
Sunny
Early-Evening
Belleville Weather - 2026-09-23 - Evening - Sunny
84°F 29°C
Sunny
Sizzling hot with 92°F 34°C, partly cloudy in the morning, sunny in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure.

Thursday, September 24, 2026

Mid-Morning
Belleville Weather - 2026-09-24 - Morning - Overcast
77°F 25°C
Overcast
Mid-Afternoon
Belleville Weather - 2026-09-24 - Afternoon - Sunny
95°F 35°C
Sunny
Early-Evening
Belleville Weather - 2026-09-24 - Evening - Sunny
87°F 30°C
Sunny
Hot temperatures near 95°F 35°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure. Winds SSE at 7 mph 12 km/h. Gusts up to 23 mph 36 km/h.

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Weather by the Numbers

Fri, 11th
Belleville IL Weather - Friday, Sep 11, 2026 - Patchy Rain Nearby
Hi: 84°F 29°C
Lo: 71°F 22°C
Sunrise 06:38 AM
Sunset 07:14 PM
Wind SE 7 mph12 km/h
Dew Point 70°F21°C
uv Index 5
Barometric Pressure 29.94 in1014 mb
POP 20% *
Humidity 70%
Sat, 12th
Belleville IL Weather - Saturday, Sep 12, 2026 - Sunny
Hi: 92°F 33°C
Lo: 68°F 20°C
Sunrise 06:39 AM
Sunset 07:13 PM
Wind WSW 7 mph11 km/h
Dew Point 64°F18°C
uv Index 7
Barometric Pressure 29.91 in1013 mb
POP 2% *
Humidity 50%
Sun, 13th
Belleville IL Weather - Sunday, Sep 13, 2026 - Sunny
Hi: 97°F 36°C
Lo: 71°F 22°C
Sunrise 06:40 AM
Sunset 07:11 PM
Wind WSW 6 mph10 km/h
Dew Point 60°F16°C
uv Index 7
Barometric Pressure 29.97 in1015 mb
POP 1% *
Humidity 34%
Mon, 14th
Belleville IL Weather - Monday, Sep 14, 2026 - Sunny
Hi: 100°F 38°C
Lo: 73°F 23°C
Sunrise 06:41 AM
Sunset 07:10 PM
Wind SSW 7 mph11 km/h
Dew Point 61°F16°C
uv Index 6
Barometric Pressure 29.97 in1015 mb
POP 1% *
Humidity 33%
Tue, 15th
Belleville IL Weather - Tuesday, Sep 15, 2026 - Sunny
Hi: 101°F 38°C
Lo: 78°F 25°C
Sunrise 06:41 AM
Sunset 07:08 PM
Wind SW 15 mph23 km/h
Dew Point 61°F16°C
uv Index 9
Barometric Pressure 30.03 in1017 mb
POP 0% *
Humidity 30%
Wed, 16th
Belleville IL Weather - Wednesday, Sep 16, 2026 - Sunny
Hi: 100°F 38°C
Lo: 73°F 23°C
Sunrise 06:42 AM
Sunset 07:06 PM
Wind WSW 9 mph14 km/h
Dew Point 62°F17°C
uv Index 9
Barometric Pressure 30.09 in1019 mb
POP 5% *
Humidity 33%
Thu, 17th
Belleville IL Weather - Thursday, Sep 17, 2026 - Light Rain Shower
Hi: 73°F 23°C
Lo: 62°F 17°C
Sunrise 06:43 AM
Sunset 07:05 PM
Wind ESE 10 mph17 km/h
Dew Point 65°F19°C
uv Index 5
Barometric Pressure 30.21 in1023 mb
POP 60% *
Humidity 91%
Fri, 18th
Belleville IL Weather - Friday, Sep 18, 2026 - Sunny
Hi: 74°F 23°C
Lo: 54°F 12°C
Sunrise 06:44 AM
Sunset 07:03 PM
Wind NE 9 mph14 km/h
Dew Point 41°F5°C
uv Index 6
Barometric Pressure 30.24 in1024 mb
POP 1% *
Humidity 37%
Sat, 19th
Belleville IL Weather - Saturday, Sep 19, 2026 - Sunny
Hi: 76°F 25°C
Lo: 52°F 11°C
Sunrise 06:45 AM
Sunset 07:02 PM
Wind NNE 6 mph10 km/h
Dew Point 44°F7°C
uv Index 6
Barometric Pressure 30.15 in1021 mb
POP 1% *
Humidity 39%
Sun, 20th
Belleville IL Weather - Sunday, Sep 20, 2026 - Sunny
Hi: 78°F 26°C
Lo: 54°F 12°C
Sunrise 06:46 AM
Sunset 07:00 PM
Wind NE 6 mph10 km/h
Dew Point 44°F7°C
uv Index 6
Barometric Pressure 30.09 in1019 mb
POP 1% *
Humidity 38%
Mon, 21st
Belleville IL Weather - Monday, Sep 21, 2026 - Sunny
Hi: 81°F 27°C
Lo: 55°F 13°C
Sunrise 06:47 AM
Sunset 06:58 PM
Wind E 5 mph8 km/h
Dew Point 46°F8°C
uv Index 6
Barometric Pressure 30 in1016 mb
POP 1% *
Humidity 37%
Tue, 22nd
Belleville IL Weather - Tuesday, Sep 22, 2026 - Overcast
Hi: 85°F 29°C
Lo: 58°F 15°C
Sunrise 06:48 AM
Sunset 06:57 PM
Wind SSW 6 mph9 km/h
Dew Point 46°F8°C
uv Index 6
Barometric Pressure 29.88 in1012 mb
POP 3% *
Humidity 32%
Wed, 23rd
Belleville IL Weather - Wednesday, Sep 23, 2026 - Sunny
Hi: 93°F 34°C
Lo: 69°F 21°C
Sunrise 06:49 AM
Sunset 06:55 PM
Wind SSW 6 mph10 km/h
Dew Point 47°F8°C
uv Index 8
Barometric Pressure 29.91 in1013 mb
POP 0% *
Humidity 25%
Thu, 24th
Belleville IL Weather - Thursday, Sep 24, 2026 - Sunny
Hi: 96°F 36°C
Lo: 69°F 20°C
Sunrise 06:49 AM
Sunset 06:53 PM
Wind SSE 8 mph13 km/h
Dew Point 52°F11°C
uv Index 8
Barometric Pressure 30.06 in1018 mb
POP 1% *
Humidity 29%
* POP = Probability of Precipitation. Data for 12:00 PM.