As of 18:39 CDT

Weather in Chapin, IL

74°

Chapin, Wednesday, 14 October, 18:39

Overcast. Feels like 75°. High 74°, low 67°.

Pressure30.00 inHg

Wind0 mph N

Humidity78%

Visibility6.2 mi

Dew point67°

See detailed hourly forecast

Thu, 1574° / 62°

0.38

74 °

Chapin, Thursday, 15 October

Rain. High 74°, low 62°.

Pressure29.94 inHg

Wind8.9 mph S

Humidity96%

Visibility3.7 mi

Dew point70°

Fri, 1660° / 50°

0.06

60 °

Chapin, Friday, 16 October

Rain. High 60°, low 50°.

Pressure30.18 inHg

Wind18.1 mph NW

Humidity50%

Visibility6.2 mi

Dew point37°

Sat, 1757° / 41°

57 °

Chapin, Saturday, 17 October

Clear. High 57°, low 41°.

Pressure30.56 inHg

Wind2.5 mph N

Humidity46%

Visibility6.2 mi

Dew point33°

Sun, 1862° / 43°

62 °

Chapin, Sunday, 18 October

Clear. High 62°, low 43°.

Pressure30.47 inHg

Wind7.7 mph S

Humidity44%

Visibility6.2 mi

Dew point36°

Mon, 1966° / 41°

66 °

Chapin, Monday, 19 October

Clear. High 66°, low 41°.

Pressure30.42 inHg

Wind5.4 mph S

Humidity39%

Visibility—

Dew point36°

Tue, 2073° / 44°

73 °

Chapin, Tuesday, 20 October

Partly cloudy. High 73°, low 44°.

Pressure30.30 inHg

Wind5.7 mph SE

Humidity49%

Visibility—

Dew point45°

Wed, 2177° / 56°

77 °

Chapin, Wednesday, 21 October

Clear. High 77°, low 56°.

Pressure30.18 inHg

Wind11.9 mph S

Humidity42%

Visibility—

Dew point49°

Thu, 2270° / 65°

0.11

70 °

Chapin, Thursday, 22 October

Light rain. High 70°, low 65°.

Pressure30.03 inHg

Wind14.2 mph S

Humidity79%

Visibility—

Dew point60°

Fri, 2380° / 60°

80 °

Chapin, Friday, 23 October

Partly cloudy. High 80°, low 60°.

Pressure30.03 inHg

Wind9.8 mph SE

Humidity63%

Visibility—

Dew point61°

Sat, 2475° / 54°

0.02

75 °

Chapin, Saturday, 24 October

Light rain. High 75°, low 54°.

Pressure29.97 inHg

Wind20 mph SW

Humidity70%

Visibility—

Dew point62°

Sun, 2560° / 44°

60 °

Chapin, Sunday, 25 October

Partly cloudy. High 60°, low 44°.

Pressure30.39 inHg

Wind12.5 mph NW

Humidity31%

Visibility—

Dew point27°

Mon, 2659° / 41°

59 °

Chapin, Monday, 26 October

Mostly clear. High 59°, low 41°.

Pressure30.42 inHg

Wind8.4 mph NW

Humidity30%

Visibility—

Dew point24°

Tue, 2761° / 44°

61 °

Chapin, Tuesday, 27 October

Overcast. High 61°, low 44°.

Pressure30.27 inHg

Wind9.1 mph S

Humidity26%

Visibility—

Dew point23°

Wed, 2853° / 48°

0.07

53 °

Chapin, Wednesday, 28 October

Light rain. High 53°, low 48°.

Pressure30.09 inHg

Wind9.4 mph SW

Humidity66%

Visibility—

Dew point42°

Thu, 2965° / 47°

65 °

Chapin, Thursday, 29 October

Partly cloudy. High 65°, low 47°.

Pressure30.06 inHg

Wind9.2 mph W

Humidity54%

Visibility—

Dew point44°

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 Chapin, 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 Chapin, 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.