As of 01:53 CDT

Weather in Chesterfield, IL

49°

Chesterfield, Tuesday, 20 October, 01:53

Overcast. Feels like 49°. High 72°, low 45°.

Pressure30.33 inHg

Wind3.2 mph SE

Humidity79%

Visibility6.2 mi

Dew point43°

See detailed hourly forecast

Wed, 2171° / 45°

71 °

Chesterfield, Wednesday, 21 October

Partly cloudy. High 71°, low 45°.

Pressure30.27 inHg

Wind2.4 mph SW

Humidity46%

Visibility6.2 mi

Dew point47°

Thu, 2272° / 48°

72 °

Chesterfield, Thursday, 22 October

Clear. High 72°, low 48°.

Pressure30.30 inHg

Wind3.4 mph E

Humidity45%

Visibility6.2 mi

Dew point48°

Fri, 2371° / 51°

71 °

Chesterfield, Friday, 23 October

Clear. High 71°, low 51°.

Pressure30.30 inHg

Wind5.8 mph SE

Humidity52%

Visibility6.2 mi

Dew point49°

Sat, 2470° / 49°

70 °

Chesterfield, Saturday, 24 October

Partly cloudy. High 70°, low 49°.

Pressure30.36 inHg

Wind7.3 mph SE

Humidity42%

Visibility—

Dew point42°

Sun, 2576° / 52°

76 °

Chesterfield, Sunday, 25 October

Overcast. High 76°, low 52°.

Pressure30.39 inHg

Wind7.9 mph S

Humidity47%

Visibility—

Dew point47°

Mon, 2670° / 57°

70 °

Chesterfield, Monday, 26 October

Overcast. High 70°, low 57°.

Pressure30.24 inHg

Wind8.7 mph NE

Humidity73%

Visibility—

Dew point56°

Tue, 2756° / 39°

0.07

56 °

Chesterfield, Tuesday, 27 October

Light rain. High 56°, low 39°.

Pressure30.33 inHg

Wind16.7 mph N

Humidity81%

Visibility—

Dew point40°

Wed, 2844° / 29°

44 °

Chesterfield, Wednesday, 28 October

Clear. High 44°, low 29°.

Pressure30.53 inHg

Wind12.1 mph N

Humidity28%

Visibility—

Dew point10°

Thu, 2953° / 28°

53 °

Chesterfield, Thursday, 29 October

Clear. High 53°, low 28°.

Pressure30.30 inHg

Wind7.2 mph W

Humidity25%

Visibility—

Dew point13°

Fri, 3060° / 37°

60 °

Chesterfield, Friday, 30 October

Clear. High 60°, low 37°.

Pressure30.15 inHg

Wind10.2 mph SW

Humidity19%

Visibility—

Dew point15°

Sat, 3168° / 48°

68 °

Chesterfield, Saturday, 31 October

Overcast. High 68°, low 48°.

Pressure30.15 inHg

Wind11.9 mph S

Humidity18%

Visibility—

Dew point19°

Sun, 0157° / 49°

0.45

57 °

Chesterfield, Sunday, 1 November

Rain. High 57°, low 49°.

Pressure30.15 inHg

Wind12 mph SE

Humidity50%

Visibility—

Dew point38°

Mon, 0257° / 54°

0.38

57 °

Chesterfield, Monday, 2 November

Light rain. High 57°, low 54°.

Pressure29.88 inHg

Wind10.7 mph N

Humidity96%

Visibility—

Dew point55°

Tue, 0365° / 47°

65 °

Chesterfield, Tuesday, 3 November

Clear. High 65°, low 47°.

Pressure30.00 inHg

Wind12.1 mph W

Humidity57%

Visibility—

Dew point47°

Wed, 0462° / 46°

62 °

Chesterfield, Wednesday, 4 November

Clear. High 62°, low 46°.

Pressure30.09 inHg

Wind5 mph S

Humidity51%

Visibility—

Dew point42°

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.