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As of 15:11 CDT

Weather in Belleville, IL

90°Current weather

Belleville, Saturday, 8 August, 15:11

Clear. Feels like 103°. High 90°, low 70°.

Pressure30.00 inHg
Wind4.8 mph S
Humidity67%
Visibility6.2 mi
Dew point77°
Sun, 0995° / 73°0Partly cloudy
95 °Partly cloudy

Belleville, Sunday, 9 August

Partly cloudy. High 95°, low 73°.

Pressure29.97 inHg
Wind12 mph S
Humidity57%
Visibility6.2 mi
Dew point72°
Mon, 1099° / 74°0Clear
99 °Clear

Belleville, Monday, 10 August

Clear. High 99°, low 74°.

Pressure29.97 inHg
Wind12.1 mph SW
Humidity47%
Visibility6.2 mi
Dew point70°
Tue, 11101° / 75°0.02Light rain
101 °Light rain

Belleville, Tuesday, 11 August

Light rain. High 101°, low 75°.

Pressure29.88 inHg
Wind8.4 mph W
Humidity43%
Visibility6.2 mi
Dew point69°
Wed, 1287° / 75°0.09Light rain
87 °Light rain

Belleville, Wednesday, 12 August

Light rain. High 87°, low 75°.

Pressure29.85 inHg
Wind14.7 mph W
Humidity49%
Visibility6.2 mi
Dew point69°
Thu, 1385° / 71°0.38Rain
85 °Rain

Belleville, Thursday, 13 August

Rain. High 85°, low 71°.

Pressure29.85 inHg
Wind11.5 mph SE
Humidity66%
Visibility—
Dew point70°
Fri, 1477° / 63°0.03Light rain
77 °Light rain

Belleville, Friday, 14 August

Light rain. High 77°, low 63°.

Pressure30.15 inHg
Wind11.3 mph NE
Humidity50%
Visibility—
Dew point55°
Sat, 1579° / 56°0Partly cloudy
79 °Partly cloudy

Belleville, Saturday, 15 August

Partly cloudy. High 79°, low 56°.

Pressure30.27 inHg
Wind8.5 mph E
Humidity45%
Visibility—
Dew point51°
Sun, 1680° / 61°0.06Light rain
80 °Light rain

Belleville, Sunday, 16 August

Light rain. High 80°, low 61°.

Pressure30.18 inHg
Wind12.7 mph S
Humidity66%
Visibility—
Dew point62°
Mon, 1797° / 72°0.31Rain
97 °Rain

Belleville, Monday, 17 August

Rain. High 97°, low 72°.

Pressure29.91 inHg
Wind17.8 mph S
Humidity51%
Visibility—
Dew point69°
Tue, 1887° / 73°0Overcast
87 °Overcast

Belleville, Tuesday, 18 August

Overcast. High 87°, low 73°.

Pressure29.97 inHg
Wind10.2 mph NE
Humidity60%
Visibility—
Dew point70°
Wed, 1995° / 71°0Partly cloudy
95 °Partly cloudy

Belleville, Wednesday, 19 August

Partly cloudy. High 95°, low 71°.

Pressure29.91 inHg
Wind6.8 mph SE
Humidity55%
Visibility—
Dew point69°
Thu, 2086° / 73°0.54Rain
86 °Rain

Belleville, Thursday, 20 August

Rain. High 86°, low 73°.

Pressure29.88 inHg
Wind7.4 mph S
Humidity63%
Visibility—
Dew point70°
Fri, 2181° / 70°0.07Light rain
81 °Light rain

Belleville, Friday, 21 August

Light rain. High 81°, low 70°.

Pressure29.91 inHg
Wind9.5 mph NE
Humidity72%
Visibility—
Dew point69°
Sat, 2283° / 65°0Overcast
83 °Overcast

Belleville, Saturday, 22 August

Overcast. High 83°, low 65°.

Pressure29.94 inHg
Wind6 mph NE
Humidity49%
Visibility—
Dew point60°
Sun, 2372° / 61°0.02Light rain
72 °Light rain

Belleville, Sunday, 23 August

Light rain. High 72°, low 61°.

Pressure30.12 inHg
Wind12.8 mph NE
Humidity61%
Visibility—
Dew point56°

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.