As of 00:36 CDT

Weather in Chapin, IL

70°

Chapin, Monday, 12 October, 00:36

Clear. Feels like 69°. High 90°, low 64°.

Pressure29.91 inHg

Wind5.7 mph S

Humidity64%

Visibility6.2 mi

Dew point57°

See detailed hourly forecast

Tue, 1391° / 67°

0.01

91 °

Chapin, Tuesday, 13 October

Light rain. High 91°, low 67°.

Pressure29.88 inHg

Wind8.8 mph W

Humidity49%

Visibility6.2 mi

Dew point66°

Wed, 1474° / 70°

0.71

74 °

Chapin, Wednesday, 14 October

Heavy rain. High 74°, low 70°.

Pressure30.03 inHg

Wind4.2 mph NE

Humidity95%

Visibility1.2 mi

Dew point71°

Thu, 1580° / 68°

0.86

80 °

Chapin, Thursday, 15 October

Rain. High 80°, low 68°.

Pressure30.00 inHg

Wind7.9 mph S

Humidity95%

Visibility5.7 mi

Dew point71°

Fri, 1662° / 51°

0.03

62 °

Chapin, Friday, 16 October

Light rain. High 62°, low 51°.

Pressure30.42 inHg

Wind19.6 mph N

Humidity41%

Visibility—

Dew point35°

Sat, 1759° / 42°

59 °

Chapin, Saturday, 17 October

Clear. High 59°, low 42°.

Pressure30.50 inHg

Wind8.5 mph SE

Humidity39%

Visibility—

Dew point31°

Sun, 1864° / 37°

64 °

Chapin, Sunday, 18 October

Clear. High 64°, low 37°.

Pressure30.39 inHg

Wind13.6 mph S

Humidity24%

Visibility—

Dew point21°

Mon, 1972° / 50°

72 °

Chapin, Monday, 19 October

Overcast. High 72°, low 50°.

Pressure30.30 inHg

Wind13.1 mph S

Humidity43%

Visibility—

Dew point43°

Tue, 2076° / 56°

76 °

Chapin, Tuesday, 20 October

Partly cloudy. High 76°, low 56°.

Pressure30.12 inHg

Wind13.2 mph S

Humidity44%

Visibility—

Dew point50°

Wed, 2178° / 63°

0.2

78 °

Chapin, Wednesday, 21 October

Light rain. High 78°, low 63°.

Pressure29.94 inHg

Wind21.8 mph S

Humidity57%

Visibility—

Dew point59°

Thu, 2268° / 52°

0.57

68 °

Chapin, Thursday, 22 October

Heavy rain. High 68°, low 52°.

Pressure29.88 inHg

Wind20.2 mph S

Humidity45%

Visibility—

Dew point40°

Fri, 2354° / 43°

54 °

Chapin, Friday, 23 October

Clear. High 54°, low 43°.

Pressure30.09 inHg

Wind17.8 mph NW

Humidity43%

Visibility—

Dew point31°

Sat, 2458° / 37°

58 °

Chapin, Saturday, 24 October

Partly cloudy. High 58°, low 37°.

Pressure30.12 inHg

Wind9.7 mph SE

Humidity40%

Visibility—

Dew point28°

Sun, 2554° / 46°

0.13

54 °

Chapin, Sunday, 25 October

Light rain. High 54°, low 46°.

Pressure29.71 inHg

Wind15.5 mph S

Humidity69%

Visibility—

Dew point42°

Mon, 2658° / 43°

58 °

Chapin, Monday, 26 October

Partly cloudy. High 58°, low 43°.

Pressure30.03 inHg

Wind10.4 mph N

Humidity57%

Visibility—

Dew point41°

Tue, 2757° / 43°

57 °

Chapin, Tuesday, 27 October

Clear. High 57°, low 43°.

Pressure30.06 inHg

Wind11.3 mph NW

Humidity42%

Visibility—

Dew point32°

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.