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As of 19:21 CDT

Weather in Allerton, IL

69°Current weather

Allerton, Sunday, 11 October, 19:21

Clear. Feels like 68°. High 76°, low 56°.

Pressure29.94 inHg
Wind2.8 mph SW
Humidity70%
Visibility6.2 mi
Dew point58°
Mon, 1285° / 62°0Overcast
85 °Overcast

Allerton, Monday, 12 October

Overcast. High 85°, low 62°.

Pressure29.91 inHg
Wind11.2 mph SW
Humidity51%
Visibility6.2 mi
Dew point61°
Tue, 1386° / 70°0Mostly clear
86 °Mostly clear

Allerton, Tuesday, 13 October

Mostly clear. High 86°, low 70°.

Pressure29.88 inHg
Wind11.9 mph SW
Humidity51%
Visibility6.2 mi
Dew point62°
Wed, 1479° / 69°0.54Heavy rain
79 °Heavy rain

Allerton, Wednesday, 14 October

Heavy rain. High 79°, low 69°.

Pressure30.00 inHg
Wind0 mph E
Humidity68%
Visibility1.3 mi
Dew point67°
Thu, 1577° / 66°0.62Rain
77 °Rain

Allerton, Thursday, 15 October

Rain. High 77°, low 66°.

Pressure30.00 inHg
Wind10.4 mph S
Humidity81%
Visibility6.2 mi
Dew point69°
Fri, 1665° / 50°0.02Light rain
65 °Light rain

Allerton, Friday, 16 October

Light rain. High 65°, low 50°.

Pressure30.36 inHg
Wind19.6 mph N
Humidity42%
Visibility—
Dew point38°
Sat, 1749° / 40°0Clear
49 °Clear

Allerton, Saturday, 17 October

Clear. High 49°, low 40°.

Pressure30.62 inHg
Wind9.1 mph N
Humidity47%
Visibility—
Dew point29°
Sun, 1858° / 35°0Clear
58 °Clear

Allerton, Sunday, 18 October

Clear. High 58°, low 35°.

Pressure30.53 inHg
Wind14.3 mph S
Humidity31%
Visibility—
Dew point22°
Mon, 1966° / 42°0Clear
66 °Clear

Allerton, Monday, 19 October

Clear. High 66°, low 42°.

Pressure30.42 inHg
Wind13.5 mph SW
Humidity28%
Visibility—
Dew point28°
Tue, 2067° / 49°0Overcast
67 °Overcast

Allerton, Tuesday, 20 October

Overcast. High 67°, low 49°.

Pressure30.36 inHg
Wind9.5 mph SE
Humidity44%
Visibility—
Dew point40°
Wed, 2170° / 56°0Overcast
70 °Overcast

Allerton, Wednesday, 21 October

Overcast. High 70°, low 56°.

Pressure30.24 inHg
Wind12.6 mph S
Humidity52%
Visibility—
Dew point47°
Thu, 2269° / 64°0Overcast
69 °Overcast

Allerton, Thursday, 22 October

Overcast. High 69°, low 64°.

Pressure30.27 inHg
Wind13.8 mph S
Humidity65%
Visibility—
Dew point56°
Fri, 2374° / 64°0Overcast
74 °Overcast

Allerton, Friday, 23 October

Overcast. High 74°, low 64°.

Pressure30.15 inHg
Wind13.4 mph S
Humidity52%
Visibility—
Dew point51°
Sat, 2469° / 52°0.12Light rain
69 °Light rain

Allerton, Saturday, 24 October

Light rain. High 69°, low 52°.

Pressure30.00 inHg
Wind16.2 mph S
Humidity91%
Visibility—
Dew point58°
Sun, 2554° / 48°0Overcast
54 °Overcast

Allerton, Sunday, 25 October

Overcast. High 54°, low 48°.

Pressure30.15 inHg
Wind12.4 mph NW
Humidity55%
Visibility—
Dew point37°
Mon, 2657° / 44°0Overcast
57 °Overcast

Allerton, Monday, 26 October

Overcast. High 57°, low 44°.

Pressure29.97 inHg
Wind15.2 mph W
Humidity47%
Visibility—
Dew point34°

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.