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As of 13:12 CDT

Weather in Chapin, IL

87°Current weather

Chapin, Saturday, 8 August, 13:12

Clear. Feels like 98°. High 87°, low 70°.

Pressure30.03 inHg
Wind5 mph NW
Humidity72%
Visibility6.2 mi
Dew point75°
Sun, 0994° / 70°0Clear
94 °Clear

Chapin, Sunday, 9 August

Clear. High 94°, low 70°.

Pressure29.94 inHg
Wind15.8 mph S
Humidity53%
Visibility6.2 mi
Dew point71°
Mon, 10101° / 75°0Overcast
101 °Overcast

Chapin, Monday, 10 August

Overcast. High 101°, low 75°.

Pressure29.91 inHg
Wind11.7 mph SW
Humidity42%
Visibility6.2 mi
Dew point68°
Tue, 11102° / 76°0.02Light rain
102 °Light rain

Chapin, Tuesday, 11 August

Light rain. High 102°, low 76°.

Pressure29.80 inHg
Wind18.5 mph SW
Humidity34%
Visibility6.2 mi
Dew point65°
Wed, 1287° / 73°0.26Rain
87 °Rain

Chapin, Wednesday, 12 August

Rain. High 87°, low 73°.

Pressure29.83 inHg
Wind13.2 mph E
Humidity53%
Visibility6.2 mi
Dew point67°
Thu, 1372° / 64°0.71Rain
72 °Rain

Chapin, Thursday, 13 August

Rain. High 72°, low 64°.

Pressure29.88 inHg
Wind13 mph NW
Humidity95%
Visibility—
Dew point69°
Fri, 1478° / 57°0Mostly clear
78 °Mostly clear

Chapin, Friday, 14 August

Mostly clear. High 78°, low 57°.

Pressure30.15 inHg
Wind6.4 mph SE
Humidity44%
Visibility—
Dew point51°
Sat, 1579° / 58°0Overcast
79 °Overcast

Chapin, Saturday, 15 August

Overcast. High 79°, low 58°.

Pressure30.18 inHg
Wind9.4 mph SE
Humidity54%
Visibility—
Dew point57°
Sun, 1672° / 65°0.35Rain
72 °Rain

Chapin, Sunday, 16 August

Rain. High 72°, low 65°.

Pressure30.06 inHg
Wind12.9 mph SE
Humidity97%
Visibility—
Dew point68°
Mon, 1778° / 69°0.03Light rain
78 °Light rain

Chapin, Monday, 17 August

Light rain. High 78°, low 69°.

Pressure29.97 inHg
Wind10.5 mph E
Humidity80%
Visibility—
Dew point69°
Tue, 1889° / 69°0.02Light rain
89 °Light rain

Chapin, Tuesday, 18 August

Light rain. High 89°, low 69°.

Pressure29.91 inHg
Wind10.6 mph W
Humidity54%
Visibility—
Dew point65°
Wed, 1981° / 64°0.04Light rain
81 °Light rain

Chapin, Wednesday, 19 August

Light rain. High 81°, low 64°.

Pressure29.97 inHg
Wind16.1 mph NW
Humidity63%
Visibility—
Dew point65°
Thu, 2073° / 52°0Clear
73 °Clear

Chapin, Thursday, 20 August

Clear. High 73°, low 52°.

Pressure30.24 inHg
Wind12.7 mph N
Humidity37%
Visibility—
Dew point42°
Fri, 2175° / 50°0Clear
75 °Clear

Chapin, Friday, 21 August

Clear. High 75°, low 50°.

Pressure30.24 inHg
Wind6.4 mph NE
Humidity36%
Visibility—
Dew point41°
Sat, 2278° / 52°0Clear
78 °Clear

Chapin, Saturday, 22 August

Clear. High 78°, low 52°.

Pressure30.15 inHg
Wind8.9 mph S
Humidity42%
Visibility—
Dew point48°
Sun, 2380° / 55°0Clear
80 °Clear

Chapin, Sunday, 23 August

Clear. High 80°, low 55°.

Pressure30.12 inHg
Wind9.6 mph S
Humidity39%
Visibility—
Dew point48°

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.