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As of 17:22 CDT

Weather in Chesterfield, IL

89°Current weather

Chesterfield, Saturday, 8 August, 17:22

Overcast. Feels like 97°. High 89°, low 70°.

Pressure30.00 inHg
Wind3.6 mph S
Humidity62%
Visibility6.2 mi
Dew point74°
Sun, 0994° / 73°0Partly cloudy
94 °Partly cloudy

Chesterfield, Sunday, 9 August

Partly cloudy. High 94°, low 73°.

Pressure29.94 inHg
Wind14.1 mph S
Humidity64%
Visibility6.2 mi
Dew point74°
Mon, 1095° / 74°0Clear
95 °Clear

Chesterfield, Monday, 10 August

Clear. High 95°, low 74°.

Pressure29.94 inHg
Wind12.9 mph SW
Humidity60%
Visibility6.2 mi
Dew point74°
Tue, 1189° / 76°0.04Light rain
89 °Light rain

Chesterfield, Tuesday, 11 August

Light rain. High 89°, low 76°.

Pressure29.83 inHg
Wind14.5 mph S
Humidity61%
Visibility6.2 mi
Dew point67°
Wed, 1286° / 73°0.01Light rain
86 °Light rain

Chesterfield, Wednesday, 12 August

Light rain. High 86°, low 73°.

Pressure29.85 inHg
Wind2.3 mph NE
Humidity68%
Visibility6.2 mi
Dew point74°
Thu, 1377° / 70°0.51Rain
77 °Rain

Chesterfield, Thursday, 13 August

Rain. High 77°, low 70°.

Pressure29.91 inHg
Wind7.2 mph N
Humidity90%
Visibility—
Dew point71°
Fri, 1476° / 61°0Clear
76 °Clear

Chesterfield, Friday, 14 August

Clear. High 76°, low 61°.

Pressure30.15 inHg
Wind10.2 mph NE
Humidity50%
Visibility—
Dew point53°
Sat, 1575° / 57°0Partly cloudy
75 °Partly cloudy

Chesterfield, Saturday, 15 August

Partly cloudy. High 75°, low 57°.

Pressure30.30 inHg
Wind8.8 mph E
Humidity54%
Visibility—
Dew point54°
Sun, 1673° / 60°0.01Light rain
73 °Light rain

Chesterfield, Sunday, 16 August

Light rain. High 73°, low 60°.

Pressure30.18 inHg
Wind11 mph S
Humidity75%
Visibility—
Dew point62°
Mon, 1790° / 69°0.19Light rain
90 °Light rain

Chesterfield, Monday, 17 August

Light rain. High 90°, low 69°.

Pressure29.91 inHg
Wind15.1 mph S
Humidity64%
Visibility—
Dew point72°
Tue, 1886° / 72°0Overcast
86 °Overcast

Chesterfield, Tuesday, 18 August

Overcast. High 86°, low 72°.

Pressure30.00 inHg
Wind9.9 mph NE
Humidity63%
Visibility—
Dew point70°
Wed, 1989° / 70°0Overcast
89 °Overcast

Chesterfield, Wednesday, 19 August

Overcast. High 89°, low 70°.

Pressure29.91 inHg
Wind8 mph S
Humidity65%
Visibility—
Dew point71°
Thu, 2084° / 71°1.66Heavy rain
84 °Heavy rain

Chesterfield, Thursday, 20 August

Heavy rain. High 84°, low 71°.

Pressure29.88 inHg
Wind8.4 mph SE
Humidity74%
Visibility—
Dew point72°
Fri, 2183° / 68°0Overcast
83 °Overcast

Chesterfield, Friday, 21 August

Overcast. High 83°, low 68°.

Pressure29.94 inHg
Wind7.4 mph E
Humidity63%
Visibility—
Dew point65°
Sat, 2284° / 65°0Mostly clear
84 °Mostly clear

Chesterfield, Saturday, 22 August

Mostly clear. High 84°, low 65°.

Pressure29.94 inHg
Wind16.8 mph NE
Humidity57%
Visibility—
Dew point63°
Sun, 2372° / 58°0.05Light rain
72 °Light rain

Chesterfield, Sunday, 23 August

Light rain. High 72°, low 58°.

Pressure30.18 inHg
Wind11.9 mph NE
Humidity74%
Visibility—
Dew point53°

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 Chesterfield, 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 Chesterfield, 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.