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As of 12:17 CDT

Weather in Chapin, IL

70°Current weather

Chapin, Thursday, 15 October, 12:17

Overcast. Feels like 71°. High 73°, low 59°.

Pressure29.94 inHg
Wind6.9 mph SE
Humidity96%
Visibility2.4 mi
Dew point69°
Fri, 1657° / 49°0.01Light rain
57 °Light rain

Chapin, Friday, 16 October

Light rain. High 57°, low 49°.

Pressure30.21 inHg
Wind17.6 mph NW
Humidity56%
Visibility6.2 mi
Dew point40°
Sat, 1758° / 40°0Clear
58 °Clear

Chapin, Saturday, 17 October

Clear. High 58°, low 40°.

Pressure30.59 inHg
Wind0.7 mph SE
Humidity43%
Visibility6.2 mi
Dew point31°
Sun, 1863° / 43°0Clear
63 °Clear

Chapin, Sunday, 18 October

Clear. High 63°, low 43°.

Pressure30.45 inHg
Wind10.3 mph S
Humidity46%
Visibility6.2 mi
Dew point39°
Mon, 1968° / 45°0Overcast
68 °Overcast

Chapin, Monday, 19 October

Overcast. High 68°, low 45°.

Pressure30.36 inHg
Wind7.5 mph S
Humidity48%
Visibility6.2 mi
Dew point43°
Tue, 2070° / 48°0Overcast
70 °Overcast

Chapin, Tuesday, 20 October

Overcast. High 70°, low 48°.

Pressure30.30 inHg
Wind7.4 mph S
Humidity44%
Visibility—
Dew point44°
Wed, 2173° / 55°0Overcast
73 °Overcast

Chapin, Wednesday, 21 October

Overcast. High 73°, low 55°.

Pressure30.33 inHg
Wind7.7 mph SE
Humidity45%
Visibility—
Dew point44°
Thu, 2271° / 55°0Overcast
71 °Overcast

Chapin, Thursday, 22 October

Overcast. High 71°, low 55°.

Pressure30.21 inHg
Wind10 mph S
Humidity42%
Visibility—
Dew point43°
Fri, 2376° / 56°0Overcast
76 °Overcast

Chapin, Friday, 23 October

Overcast. High 76°, low 56°.

Pressure30.18 inHg
Wind14.5 mph SE
Humidity30%
Visibility—
Dew point39°
Sat, 2475° / 58°0Overcast
75 °Overcast

Chapin, Saturday, 24 October

Overcast. High 75°, low 58°.

Pressure30.12 inHg
Wind17.4 mph S
Humidity43%
Visibility—
Dew point47°
Sun, 2568° / 49°0Clear
68 °Clear

Chapin, Sunday, 25 October

Clear. High 68°, low 49°.

Pressure30.50 inHg
Wind12.7 mph NE
Humidity30%
Visibility—
Dew point32°
Mon, 2672° / 47°0Overcast
72 °Overcast

Chapin, Monday, 26 October

Overcast. High 72°, low 47°.

Pressure30.39 inHg
Wind10 mph S
Humidity47%
Visibility—
Dew point45°
Tue, 2779° / 58°0Overcast
79 °Overcast

Chapin, Tuesday, 27 October

Overcast. High 79°, low 58°.

Pressure30.12 inHg
Wind16.2 mph SW
Humidity30%
Visibility—
Dew point42°
Wed, 2868° / 59°0.53Rain
68 °Rain

Chapin, Wednesday, 28 October

Rain. High 68°, low 59°.

Pressure30.00 inHg
Wind12.1 mph S
Humidity86%
Visibility—
Dew point56°
Thu, 2971° / 61°0.48Rain
71 °Rain

Chapin, Thursday, 29 October

Rain. High 71°, low 61°.

Pressure29.94 inHg
Wind16.1 mph S
Humidity72%
Visibility—
Dew point60°
Fri, 3076° / 56°1.25Heavy rain
76 °Heavy rain

Chapin, Friday, 30 October

Heavy rain. High 76°, low 56°.

Pressure29.74 inHg
Wind23 mph W
Humidity71%
Visibility—
Dew point65°

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.