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As of 08:50 CDT

Weather in Belleville, IL

53°Current weather

Belleville, Thursday, 8 October, 08:50

Clear. Feels like 53°. High 83°, low 53°.

Pressure30.09 inHg
Wind0 mph N
Humidity100%
Visibility6.2 mi
Dew point53°
Fri, 0987° / 55°0Clear
87 °Clear

Belleville, Friday, 9 October

Clear. High 87°, low 55°.

Pressure30.12 inHg
Wind6.3 mph S
Humidity28%
Visibility6.2 mi
Dew point46°
Sat, 1082° / 55°0Overcast
82 °Overcast

Belleville, Saturday, 10 October

Overcast. High 82°, low 55°.

Pressure30.09 inHg
Wind3.7 mph E
Humidity48%
Visibility6.2 mi
Dew point57°
Sun, 1181° / 61°0Clear
81 °Clear

Belleville, Sunday, 11 October

Clear. High 81°, low 61°.

Pressure29.94 inHg
Wind7.4 mph NW
Humidity53%
Visibility6.2 mi
Dew point57°
Mon, 1293° / 64°0Clear
93 °Clear

Belleville, Monday, 12 October

Clear. High 93°, low 64°.

Pressure29.91 inHg
Wind10.5 mph SW
Humidity32%
Visibility—
Dew point53°
Tue, 1393° / 71°0Clear
93 °Clear

Belleville, Tuesday, 13 October

Clear. High 93°, low 71°.

Pressure29.85 inHg
Wind9.2 mph SW
Humidity42%
Visibility—
Dew point62°
Wed, 1491° / 64°0Mostly clear
91 °Mostly clear

Belleville, Wednesday, 14 October

Mostly clear. High 91°, low 64°.

Pressure29.88 inHg
Wind12 mph S
Humidity41%
Visibility—
Dew point59°
Thu, 1595° / 76°0Clear
95 °Clear

Belleville, Thursday, 15 October

Clear. High 95°, low 76°.

Pressure29.91 inHg
Wind17.4 mph SW
Humidity35%
Visibility—
Dew point60°
Fri, 1683° / 55°0.48Rain
83 °Rain

Belleville, Friday, 16 October

Rain. High 83°, low 55°.

Pressure30.24 inHg
Wind14.1 mph N
Humidity78%
Visibility—
Dew point58°
Sat, 1766° / 50°0Overcast
66 °Overcast

Belleville, Saturday, 17 October

Overcast. High 66°, low 50°.

Pressure30.50 inHg
Wind14.2 mph NE
Humidity42%
Visibility—
Dew point38°
Sun, 1868° / 43°0Partly cloudy
68 °Partly cloudy

Belleville, Sunday, 18 October

Partly cloudy. High 68°, low 43°.

Pressure30.39 inHg
Wind9.4 mph NE
Humidity29%
Visibility—
Dew point29°
Mon, 1977° / 55°0.03Light rain
77 °Light rain

Belleville, Monday, 19 October

Light rain. High 77°, low 55°.

Pressure30.24 inHg
Wind13.1 mph S
Humidity68%
Visibility—
Dew point55°
Tue, 2075° / 61°0.15Light rain
75 °Light rain

Belleville, Tuesday, 20 October

Light rain. High 75°, low 61°.

Pressure30.18 inHg
Wind10.5 mph S
Humidity57%
Visibility—
Dew point57°
Wed, 2177° / 58°0.02Light rain
77 °Light rain

Belleville, Wednesday, 21 October

Light rain. High 77°, low 58°.

Pressure30.09 inHg
Wind7.4 mph SW
Humidity58%
Visibility—
Dew point57°
Thu, 2275° / 57°0.04Light rain
75 °Light rain

Belleville, Thursday, 22 October

Light rain. High 75°, low 57°.

Pressure29.97 inHg
Wind15.5 mph W
Humidity54%
Visibility—
Dew point55°
Fri, 2367° / 47°0Clear
67 °Clear

Belleville, Friday, 23 October

Clear. High 67°, low 47°.

Pressure30.18 inHg
Wind9.1 mph NW
Humidity31%
Visibility—
Dew point30°

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Belleville, IL are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Belleville, IL since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.