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As of 04:07 CDT

Weather in Chapin, IL

41°Current weather

Chapin, Sunday, 18 October, 04:07

Clear. Feels like 38°. High 64°, low 40°.

Pressure30.45 inHg
Wind4.6 mph S
Humidity75%
Visibility6.2 mi
Dew point34°
Mon, 1967° / 41°0Mostly clear
67 °Mostly clear

Chapin, Monday, 19 October

Mostly clear. High 67°, low 41°.

Pressure30.39 inHg
Wind3.8 mph S
Humidity52%
Visibility6.2 mi
Dew point45°
Tue, 2069° / 45°0Mostly clear
69 °Mostly clear

Chapin, Tuesday, 20 October

Mostly clear. High 69°, low 45°.

Pressure30.36 inHg
Wind2.6 mph SE
Humidity52%
Visibility6.2 mi
Dew point48°
Wed, 2171° / 47°0Partly cloudy
71 °Partly cloudy

Chapin, Wednesday, 21 October

Partly cloudy. High 71°, low 47°.

Pressure30.30 inHg
Wind3.3 mph S
Humidity51%
Visibility6.2 mi
Dew point49°
Thu, 2271° / 50°0Clear
71 °Clear

Chapin, Thursday, 22 October

Clear. High 71°, low 50°.

Pressure30.27 inHg
Wind4.7 mph E
Humidity46%
Visibility—
Dew point46°
Fri, 2370° / 53°0Clear
70 °Clear

Chapin, Friday, 23 October

Clear. High 70°, low 53°.

Pressure30.30 inHg
Wind9.7 mph SE
Humidity47%
Visibility—
Dew point45°
Sat, 2480° / 58°0Overcast
80 °Overcast

Chapin, Saturday, 24 October

Overcast. High 80°, low 58°.

Pressure30.21 inHg
Wind14.1 mph S
Humidity23%
Visibility—
Dew point35°
Sun, 2563° / 48°0.01Light rain
63 °Light rain

Chapin, Sunday, 25 October

Light rain. High 63°, low 48°.

Pressure30.45 inHg
Wind13.3 mph N
Humidity38%
Visibility—
Dew point34°
Mon, 2655° / 42°0.02Light rain
55 °Light rain

Chapin, Monday, 26 October

Light rain. High 55°, low 42°.

Pressure30.36 inHg
Wind7.7 mph SE
Humidity29%
Visibility—
Dew point22°
Tue, 2773° / 51°0Overcast
73 °Overcast

Chapin, Tuesday, 27 October

Overcast. High 73°, low 51°.

Pressure30.15 inHg
Wind8.5 mph S
Humidity42%
Visibility—
Dew point44°
Wed, 2871° / 57°0Overcast
71 °Overcast

Chapin, Wednesday, 28 October

Overcast. High 71°, low 57°.

Pressure29.97 inHg
Wind11.7 mph S
Humidity38%
Visibility—
Dew point42°
Thu, 2970° / 58°0Overcast
70 °Overcast

Chapin, Thursday, 29 October

Overcast. High 70°, low 58°.

Pressure29.80 inHg
Wind7.3 mph SW
Humidity73%
Visibility—
Dew point55°
Fri, 3076° / 54°0Clear
76 °Clear

Chapin, Friday, 30 October

Clear. High 76°, low 54°.

Pressure29.80 inHg
Wind13.4 mph SW
Humidity44%
Visibility—
Dew point48°
Sat, 3180° / 60°0.2Rain
80 °Rain

Chapin, Saturday, 31 October

Rain. High 80°, low 60°.

Pressure29.77 inHg
Wind15.3 mph SW
Humidity53%
Visibility—
Dew point56°
Sun, 0184° / 61°0Mostly clear
84 °Mostly clear

Chapin, Sunday, 1 November

Mostly clear. High 84°, low 61°.

Pressure29.97 inHg
Wind14.6 mph SW
Humidity43%
Visibility—
Dew point54°
Mon, 0276° / 61°0Overcast
76 °Overcast

Chapin, Monday, 2 November

Overcast. High 76°, low 61°.

Pressure30.15 inHg
Wind11.2 mph NE
Humidity46%
Visibility—
Dew point51°

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.