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As of 10:35 CDT

Weather in Allerton, IL

79°Current weather

Allerton, Tuesday, 13 October, 10:35

Mostly clear. Feels like 79°. High 88°, low 67°.

Pressure29.91 inHg
Wind9.5 mph SW
Humidity53%
Visibility6.2 mi
Dew point61°
Wed, 1480° / 67°0.06Light rain
80 °Light rain

Allerton, Wednesday, 14 October

Light rain. High 80°, low 67°.

Pressure30.03 inHg
Wind4.7 mph NE
Humidity62%
Visibility6.2 mi
Dew point66°
Thu, 1580° / 65°0.71Heavy rain
80 °Heavy rain

Allerton, Thursday, 15 October

Heavy rain. High 80°, low 65°.

Pressure29.97 inHg
Wind12.5 mph S
Humidity78%
Visibility6.2 mi
Dew point70°
Fri, 1671° / 50°0.14Rain
71 °Rain

Allerton, Friday, 16 October

Rain. High 71°, low 50°.

Pressure30.12 inHg
Wind22.7 mph NW
Humidity45%
Visibility6.2 mi
Dew point35°
Sat, 1759° / 41°0Clear
59 °Clear

Allerton, Saturday, 17 October

Clear. High 59°, low 41°.

Pressure30.50 inHg
Wind11.7 mph N
Humidity41%
Visibility—
Dew point31°
Sun, 1864° / 44°0Clear
64 °Clear

Allerton, Sunday, 18 October

Clear. High 64°, low 44°.

Pressure30.36 inHg
Wind10.7 mph SW
Humidity38%
Visibility—
Dew point34°
Mon, 1962° / 52°0.01Light rain
62 °Light rain

Allerton, Monday, 19 October

Light rain. High 62°, low 52°.

Pressure30.21 inHg
Wind9 mph SW
Humidity46%
Visibility—
Dew point40°
Tue, 2063° / 55°0.24Rain
63 °Rain

Allerton, Tuesday, 20 October

Rain. High 63°, low 55°.

Pressure30.27 inHg
Wind7 mph SE
Humidity80%
Visibility—
Dew point55°
Wed, 2171° / 59°0Overcast
71 °Overcast

Allerton, Wednesday, 21 October

Overcast. High 71°, low 59°.

Pressure30.24 inHg
Wind11 mph S
Humidity64%
Visibility—
Dew point57°
Thu, 2279° / 63°0Overcast
79 °Overcast

Allerton, Thursday, 22 October

Overcast. High 79°, low 63°.

Pressure30.06 inHg
Wind18.5 mph S
Humidity53%
Visibility—
Dew point57°
Fri, 2378° / 65°0Partly cloudy
78 °Partly cloudy

Allerton, Friday, 23 October

Partly cloudy. High 78°, low 65°.

Pressure30.00 inHg
Wind24 mph SW
Humidity45%
Visibility—
Dew point53°
Sat, 2464° / 51°0Overcast
64 °Overcast

Allerton, Saturday, 24 October

Overcast. High 64°, low 51°.

Pressure30.33 inHg
Wind9.4 mph NW
Humidity31%
Visibility—
Dew point31°
Sun, 2563° / 51°0Partly cloudy
63 °Partly cloudy

Allerton, Sunday, 25 October

Partly cloudy. High 63°, low 51°.

Pressure30.24 inHg
Wind8.8 mph NW
Humidity37%
Visibility—
Dew point34°
Mon, 2655° / 45°0Overcast
55 °Overcast

Allerton, Monday, 26 October

Overcast. High 55°, low 45°.

Pressure30.21 inHg
Wind12.9 mph NW
Humidity41%
Visibility—
Dew point31°
Tue, 2757° / 40°0Overcast
57 °Overcast

Allerton, Tuesday, 27 October

Overcast. High 57°, low 40°.

Pressure30.27 inHg
Wind7.7 mph SE
Humidity40%
Visibility—
Dew point30°
Wed, 2862° / 46°0Overcast
62 °Overcast

Allerton, Wednesday, 28 October

Overcast. High 62°, low 46°.

Pressure30.09 inHg
Wind13.5 mph S
Humidity30%
Visibility—
Dew point29°

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.