As of 14:14 CDT

Weather in Chapman, IL

90°

Chapman, Friday, 9 October, 14:14

Clear. Feels like 87°. High 90°, low 53°.

Pressure30.03 inHg

Wind11.3 mph S

Humidity28%

Visibility6.2 mi

Dew point53°

See detailed hourly forecast

Sat, 1077° / 56°

77 °

Chapman, Saturday, 10 October

Overcast. High 77°, low 56°.

Pressure30.06 inHg

Wind5.6 mph SE

Humidity51%

Visibility6.2 mi

Dew point52°

Sun, 1181° / 59°

81 °

Chapman, Sunday, 11 October

Clear. High 81°, low 59°.

Pressure29.94 inHg

Wind5.3 mph NW

Humidity56%

Visibility6.2 mi

Dew point58°

Mon, 1289° / 64°

89 °

Chapman, Monday, 12 October

Overcast. High 89°, low 64°.

Pressure29.91 inHg

Wind10.7 mph SW

Humidity44%

Visibility6.2 mi

Dew point60°

Tue, 1387° / 71°

87 °

Chapman, Tuesday, 13 October

Overcast. High 87°, low 71°.

Pressure29.85 inHg

Wind8.9 mph W

Humidity56%

Visibility6.2 mi

Dew point67°

Wed, 1472° / 65°

0.44

72 °

Chapman, Wednesday, 14 October

Rain. High 72°, low 65°.

Pressure29.97 inHg

Wind9.4 mph NE

Humidity86%

Visibility—

Dew point66°

Thu, 1573° / 56°

1.05

73 °

Chapman, Thursday, 15 October

Heavy rain. High 73°, low 56°.

Pressure29.97 inHg

Wind13.7 mph SE

Humidity72%

Visibility—

Dew point55°

Fri, 1674° / 48°

0.04

74 °

Chapman, Friday, 16 October

Light rain. High 74°, low 48°.

Pressure30.03 inHg

Wind23.4 mph NW

Humidity34%

Visibility—

Dew point32°

Sat, 1750° / 39°

50 °

Chapman, Saturday, 17 October

Clear. High 50°, low 39°.

Pressure30.42 inHg

Wind19.7 mph NW

Humidity40%

Visibility—

Dew point24°

Sun, 1858° / 34°

58 °

Chapman, Sunday, 18 October

Clear. High 58°, low 34°.

Pressure30.36 inHg

Wind9.5 mph S

Humidity30%

Visibility—

Dew point21°

Mon, 1966° / 41°

66 °

Chapman, Monday, 19 October

Overcast. High 66°, low 41°.

Pressure30.27 inHg

Wind10.9 mph SW

Humidity25%

Visibility—

Dew point24°

Tue, 2072° / 46°

72 °

Chapman, Tuesday, 20 October

Clear. High 72°, low 46°.

Pressure30.33 inHg

Wind7.9 mph S

Humidity23%

Visibility—

Dew point27°

Wed, 2175° / 53°

75 °

Chapman, Wednesday, 21 October

Overcast. High 75°, low 53°.

Pressure30.24 inHg

Wind12.1 mph S

Humidity29%

Visibility—

Dew point36°

Thu, 2272° / 53°

0.06

72 °

Chapman, Thursday, 22 October

Light rain. High 72°, low 53°.

Pressure30.03 inHg

Wind14.2 mph SW

Humidity38%

Visibility—

Dew point42°

Fri, 2360° / 44°

0.02

60 °

Chapman, Friday, 23 October

Light rain. High 60°, low 44°.

Pressure30.09 inHg

Wind17.9 mph NW

Humidity41%

Visibility—

Dew point32°

Sat, 2450° / 36°

50 °

Chapman, Saturday, 24 October

Clear. High 50°, low 36°.

Pressure30.21 inHg

Wind14 mph N

Humidity42%

Visibility—

Dew point25°

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 Chapman, 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 Chapman, 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.