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As of 23:30 CDT

Weather in Allerton, IL

68°Current weather

Allerton, Thursday, 15 October, 23:30

Light rain. Feels like 69°. High 71°, low 62°.

Pressure29.85 inHg
Wind16.7 mph W
Humidity89%
Visibility6.2 mi
Dew point65°
Fri, 1668° / 49°0.06Light rain
68 °Light rain

Allerton, Friday, 16 October

Light rain. High 68°, low 49°.

Pressure30.12 inHg
Wind17 mph NW
Humidity49%
Visibility6.2 mi
Dew point37°
Sat, 1757° / 40°0Clear
57 °Clear

Allerton, Saturday, 17 October

Clear. High 57°, low 40°.

Pressure30.56 inHg
Wind3.9 mph N
Humidity52%
Visibility6.2 mi
Dew point36°
Sun, 1863° / 40°0Clear
63 °Clear

Allerton, Sunday, 18 October

Clear. High 63°, low 40°.

Pressure30.53 inHg
Wind9.5 mph S
Humidity36%
Visibility6.2 mi
Dew point31°
Mon, 1967° / 42°0Clear
67 °Clear

Allerton, Monday, 19 October

Clear. High 67°, low 42°.

Pressure30.42 inHg
Wind5.2 mph S
Humidity43%
Visibility6.2 mi
Dew point39°
Tue, 2069° / 43°0.02Light rain
69 °Light rain

Allerton, Tuesday, 20 October

Light rain. High 69°, low 43°.

Pressure30.33 inHg
Wind4.2 mph E
Humidity38%
Visibility—
Dew point38°
Wed, 2171° / 46°0Clear
71 °Clear

Allerton, Wednesday, 21 October

Clear. High 71°, low 46°.

Pressure30.30 inHg
Wind5.3 mph SE
Humidity34%
Visibility—
Dew point37°
Thu, 2275° / 52°0Mostly clear
75 °Mostly clear

Allerton, Thursday, 22 October

Mostly clear. High 75°, low 52°.

Pressure30.27 inHg
Wind5.7 mph SE
Humidity25%
Visibility—
Dew point32°
Fri, 2376° / 53°0Clear
76 °Clear

Allerton, Friday, 23 October

Clear. High 76°, low 53°.

Pressure30.18 inHg
Wind8.5 mph SE
Humidity26%
Visibility—
Dew point34°
Sat, 2473° / 53°0Overcast
73 °Overcast

Allerton, Saturday, 24 October

Overcast. High 73°, low 53°.

Pressure30.21 inHg
Wind8.1 mph SE
Humidity31%
Visibility—
Dew point38°
Sun, 2574° / 55°0Overcast
74 °Overcast

Allerton, Sunday, 25 October

Overcast. High 74°, low 55°.

Pressure30.24 inHg
Wind7.3 mph E
Humidity27%
Visibility—
Dew point35°
Mon, 2671° / 55°0Overcast
71 °Overcast

Allerton, Monday, 26 October

Overcast. High 71°, low 55°.

Pressure30.06 inHg
Wind11.5 mph S
Humidity36%
Visibility—
Dew point39°
Tue, 2767° / 52°0Clear
67 °Clear

Allerton, Tuesday, 27 October

Clear. High 67°, low 52°.

Pressure30.03 inHg
Wind11.3 mph W
Humidity37%
Visibility—
Dew point36°
Wed, 2874° / 51°0.69Heavy rain
74 °Heavy rain

Allerton, Wednesday, 28 October

Heavy rain. High 74°, low 51°.

Pressure29.65 inHg
Wind23.8 mph S
Humidity49%
Visibility—
Dew point51°
Thu, 2957° / 48°0.16Light rain
57 °Light rain

Allerton, Thursday, 29 October

Light rain. High 57°, low 48°.

Pressure29.88 inHg
Wind21.5 mph W
Humidity76%
Visibility—
Dew point45°
Fri, 3064° / 46°0Partly cloudy
64 °Partly cloudy

Allerton, Friday, 30 October

Partly cloudy. High 64°, low 46°.

Pressure30.06 inHg
Wind10.4 mph W
Humidity39%
Visibility—
Dew point35°

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.