As of 17:37 CDT

Weather in Allerton, IL

75°

Allerton, Wednesday, 14 October, 17:37

Overcast. Feels like 76°. High 75°, low 67°.

Pressure30.03 inHg

Wind9.4 mph NE

Humidity76%

Visibility6.2 mi

Dew point67°

See detailed hourly forecast

Thu, 1578° / 65°

0.57

78 °

Allerton, Thursday, 15 October

Rain. High 78°, low 65°.

Pressure30.00 inHg

Wind9.5 mph SE

Humidity68%

Visibility6.2 mi

Dew point64°

Fri, 1670° / 50°

0.25

70 °

Allerton, Friday, 16 October

Rain. High 70°, low 50°.

Pressure30.06 inHg

Wind16.8 mph NW

Humidity48%

Visibility6.2 mi

Dew point39°

Sat, 1757° / 43°

57 °

Allerton, Saturday, 17 October

Overcast. High 57°, low 43°.

Pressure30.53 inHg

Wind9 mph NE

Humidity53%

Visibility6.2 mi

Dew point37°

Sun, 1862° / 39°

62 °

Allerton, Sunday, 18 October

Clear. High 62°, low 39°.

Pressure30.50 inHg

Wind6.9 mph S

Humidity38%

Visibility6.2 mi

Dew point31°

Mon, 1965° / 39°

65 °

Allerton, Monday, 19 October

Clear. High 65°, low 39°.

Pressure30.42 inHg

Wind4.5 mph E

Humidity32%

Visibility—

Dew point30°

Tue, 2070° / 44°

70 °

Allerton, Tuesday, 20 October

Partly cloudy. High 70°, low 44°.

Pressure30.30 inHg

Wind5.5 mph SE

Humidity49%

Visibility—

Dew point46°

Wed, 2173° / 60°

73 °

Allerton, Wednesday, 21 October

Overcast. High 73°, low 60°.

Pressure30.27 inHg

Wind10.2 mph S

Humidity46%

Visibility—

Dew point47°

Thu, 2267° / 60°

0.19

67 °

Allerton, Thursday, 22 October

Light rain. High 67°, low 60°.

Pressure30.09 inHg

Wind15.3 mph S

Humidity80%

Visibility—

Dew point57°

Fri, 2375° / 58°

75 °

Allerton, Friday, 23 October

Clear. High 75°, low 58°.

Pressure30.09 inHg

Wind7.3 mph E

Humidity54%

Visibility—

Dew point53°

Sat, 2483° / 60°

83 °

Allerton, Saturday, 24 October

Overcast. High 83°, low 60°.

Pressure29.97 inHg

Wind20.9 mph SW

Humidity35%

Visibility—

Dew point50°

Sun, 2559° / 48°

59 °

Allerton, Sunday, 25 October

Overcast. High 59°, low 48°.

Pressure30.33 inHg

Wind13.2 mph NW

Humidity32%

Visibility—

Dew point28°

Mon, 2658° / 42°

58 °

Allerton, Monday, 26 October

Clear. High 58°, low 42°.

Pressure30.39 inHg

Wind7.9 mph NW

Humidity28%

Visibility—

Dew point22°

Tue, 2760° / 41°

60 °

Allerton, Tuesday, 27 October

Overcast. High 60°, low 41°.

Pressure30.30 inHg

Wind7.6 mph S

Humidity29%

Visibility—

Dew point24°

Wed, 2859° / 48°

0.07

59 °

Allerton, Wednesday, 28 October

Light rain. High 59°, low 48°.

Pressure30.12 inHg

Wind9.1 mph SW

Humidity35%

Visibility—

Dew point28°

Thu, 2961° / 47°

0.12

61 °

Allerton, Thursday, 29 October

Light rain. High 61°, low 47°.

Pressure30.06 inHg

Wind9.9 mph W

Humidity61%

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 Allerton, 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 Allerton, 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.