Current Conditions

Belleville, Illinois

67°F19°C
Cloudy

Wind

NE 7 mph12 km/h

Humidity

66%

Cloud Cover

76%

As of Tuesday, September 22, 2026 at 9:35 PM CDT

Today's Outlook

Night

Mostly cloudy, with a low around 62°F17°C. Light wind from the NNE around 6 mph10 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
CloudyHigh 69°F20°CLow 60°F16°CPrecip 0.01 in0.2 mm5%Cloud 80%Wind NNE 7 mph11 km/hWednesday: Overcast and warm, with a high of 69°F20°C and morning low of 60°F16°C. Breezy from the NNE at 7 to 8 mph12 to 13 km/h. Wednesday Night: Mostly cloudy, with a low around 62°F17°C. Light wind from the NNE around 6 mph10 km/h.
CloudyHigh 71°F22°CLow 61°F16°CPrecip 0 in0 mmCloud 85%Wind NE 5 mph7 km/hThursday: Overcast and warm, with a high of 71°F22°C and morning low of 61°F16°C. Light wind from the NNE around 5 mph7 km/h. Thursday Night: Overcast, with a low around 61°F16°C. Light wind from the NE around 4 mph7 km/h.
CloudyHigh 76°F25°CLow 62°F17°CPrecip 0.01 in0.2 mm3%Cloud 86%Wind ENE 4 mph7 km/hFriday: Overcast and warm, with a high of 76°F25°C and morning low of 62°F17°C. Light wind from the ENE around 4 mph7 km/h. Friday Night: Overcast, with a low around 63°F17°C. Light wind from the ENE around 4 mph7 km/h.
DrizzleHigh 72°F22°CLow 62°F17°CPrecip 0.07 in1.9 mm32%Cloud 87%Wind E 5 mph7 km/hSaturday: Overcast and warm, with a high of 72°F22°C and morning low of 62°F17°C. Light wind from the ESE around 4 mph7 km/h. 32% chance of drizzle throughout the day. Saturday Night: Overcast, with a low around 64°F18°C. Light wind from the E around 5 mph8 km/h. 27% chance of drizzle in the evening.
ShowersHigh 75°F24°CLow 62°F17°CPrecip 0.09 in2.4 mm34%Cloud 67%Wind E 4 mph7 km/hSunday: Mostly cloudy and warm, with a high of 75°F24°C and morning low of 62°F17°C. Light wind from the E around 4 mph6 km/h. 34% chance of light rain throughout the day. Sunday Night: Mostly cloudy, with a low around 63°F17°C. Light wind from the ENE around 4 mph7 km/h. 34% chance of showers overnight.
ClearHigh 80°F27°CLow 60°F15°CPrecip 0 in0.1 mm3%Cloud 34%Wind ENE 4 mph6 km/hMonday: Partly cloudy and warm, with a high of 80°F27°C and morning low of 60°F15°C. Light wind from the ENE around 4 mph6 km/h. Monday Night: Partly cloudy, with a low around 62°F17°C. Light wind from the ENE around 4 mph7 km/h.
Light RainHigh 81°F27°CLow 60°F15°CPrecip 0.15 in3.8 mm32%Cloud 71%Wind SSE 6 mph10 km/hTuesday: Mostly cloudy and warm, with a high of 81°F27°C and morning low of 60°F15°C. Breezy from the SSE at 7 to 8 mph11 to 13 km/h. 21% chance of light rain throughout the day. Tuesday Night: Mostly cloudy, with a low around 62°F16°C. Breezy from the SE at 6 to 8 mph10 to 12 km/h. 32% chance of showers in the evening.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
WednesdaySep 2369°F20°C60°F16°C0.01 in0.2 mm· 5%80%CloudyNNE 7 mph11 km/h
ThursdaySep 2471°F22°C61°F16°C0 in0 mm· —85%CloudyNE 5 mph7 km/h
FridaySep 2576°F25°C62°F17°C0.01 in0.2 mm· 3%86%CloudyENE 4 mph7 km/h
SaturdaySep 2672°F22°C62°F17°C0.07 in1.9 mm· 32%87%DrizzleE 5 mph7 km/h
SundaySep 2775°F24°C62°F17°C0.09 in2.4 mm· 34%67%ShowersE 4 mph7 km/h
MondaySep 2880°F27°C60°F15°C0 in0.1 mm· 3%34%ClearENE 4 mph6 km/h
TuesdaySep 2981°F27°C60°F15°C0.15 in3.8 mm· 32%71%Light RainSSE 6 mph10 km/h
WednesdaySep 3075°F24°C65°F18°C0.41 in10.3 mm· 45%79%Light RainSSW 8 mph12 km/h
ThursdayOct 174°F24°C61°F16°C0.26 in6.5 mm· 27%60%ShowersW 7 mph12 km/h
FridayOct 275°F24°C58°F15°C0.11 in2.7 mm· 19%54%DrizzleW 7 mph11 km/h
SaturdayOct 375°F24°C59°F15°C0.14 in3.6 mm· 23%56%ShowersSW 7 mph11 km/h
SundayOct 474°F23°C58°F14°C0.12 in3.1 mm· 16%46%ShowersW 7 mph12 km/h
MondayOct 573°F23°C55°F13°C0.07 in1.9 mm· 10%39%DrizzleW 7 mph11 km/h
TuesdayOct 674°F23°C54°F12°C0.08 in2.1 mm· 9%37%ClearWNW 6 mph10 km/h
WednesdayOct 774°F23°C53°F12°C0.08 in2 mm· 9%32%ClearWNW 6 mph10 km/h

Nearby Cities

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

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Coordinates: 38.5200°N, 89.9840°W·Elevation: 157m·Timezone: America/Chicago·Population: 42,034