As of 15:09 CDT

Weather in Chesterfield, IL

57°

Chesterfield, Saturday, 17 October, 15:09

Clear. Feels like 54°. High 57°, low 39°.

Pressure30.50 inHg

Wind1.3 mph NW

Humidity44%

Visibility6.2 mi

Dew point34°

See detailed hourly forecast

Sun, 1863° / 43°

63 °

Chesterfield, Sunday, 18 October

Clear. High 63°, low 43°.

Pressure30.47 inHg

Wind8.9 mph S

Humidity47%

Visibility6.2 mi

Dew point38°

Mon, 1966° / 42°

66 °

Chesterfield, Monday, 19 October

Clear. High 66°, low 42°.

Pressure30.39 inHg

Wind2.5 mph S

Humidity50%

Visibility6.2 mi

Dew point44°

Tue, 2068° / 45°

68 °

Chesterfield, Tuesday, 20 October

Overcast. High 68°, low 45°.

Pressure30.36 inHg

Wind2.8 mph SE

Humidity49%

Visibility6.2 mi

Dew point47°

Wed, 2168° / 46°

0.04

68 °

Chesterfield, Wednesday, 21 October

Light rain. High 68°, low 46°.

Pressure30.27 inHg

Wind1.9 mph SW

Humidity57%

Visibility6.2 mi

Dew point49°

Thu, 2272° / 48°

72 °

Chesterfield, Thursday, 22 October

Clear. High 72°, low 48°.

Pressure30.24 inHg

Wind4.8 mph E

Humidity41%

Visibility—

Dew point43°

Fri, 2377° / 54°

77 °

Chesterfield, Friday, 23 October

Clear. High 77°, low 54°.

Pressure30.15 inHg

Wind9.7 mph SE

Humidity29%

Visibility—

Dew point38°

Sat, 2476° / 57°

76 °

Chesterfield, Saturday, 24 October

Overcast. High 76°, low 57°.

Pressure30.12 inHg

Wind14.2 mph S

Humidity30%

Visibility—

Dew point39°

Sun, 2574° / 60°

74 °

Chesterfield, Sunday, 25 October

Overcast. High 74°, low 60°.

Pressure30.09 inHg

Wind11.8 mph W

Humidity65%

Visibility—

Dew point57°

Mon, 2676° / 53°

76 °

Chesterfield, Monday, 26 October

Clear. High 76°, low 53°.

Pressure30.15 inHg

Wind8.4 mph SE

Humidity45%

Visibility—

Dew point48°

Tue, 2779° / 63°

79 °

Chesterfield, Tuesday, 27 October

Overcast. High 79°, low 63°.

Pressure30.03 inHg

Wind16.7 mph S

Humidity27%

Visibility—

Dew point40°

Wed, 2867° / 63°

0.43

67 °

Chesterfield, Wednesday, 28 October

Rain. High 67°, low 63°.

Pressure29.97 inHg

Wind15.5 mph S

Humidity73%

Visibility—

Dew point55°

Thu, 2967° / 54°

0.11

67 °

Chesterfield, Thursday, 29 October

Light rain. High 67°, low 54°.

Pressure30.09 inHg

Wind11.8 mph SW

Humidity33%

Visibility—

Dew point34°

Fri, 3078° / 62°

0.24

78 °

Chesterfield, Friday, 30 October

Light rain. High 78°, low 62°.

Pressure29.74 inHg

Wind22.7 mph S

Humidity66%

Visibility—

Dew point62°

Sat, 3173° / 51°

0.09

73 °

Chesterfield, Saturday, 31 October

Light rain. High 73°, low 51°.

Pressure29.83 inHg

Wind21.1 mph S

Humidity35%

Visibility—

Dew point37°

Sun, 0165° / 46°

65 °

Chesterfield, Sunday, 1 November

Clear. High 65°, low 46°.

Pressure30.15 inHg

Wind7.8 mph E

Humidity29%

Visibility—

Dew point28°

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.