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As of 17:45 CDT

Weather in Allen, IL

57°Current weather

Allen, Saturday, 17 October, 17:45

Clear. Feels like 54°. High 57°, low 37°.

Pressure30.47 inHg
Wind2.4 mph SW
Humidity48%
Visibility6.2 mi
Dew point37°
Sun, 1863° / 41°0Clear
63 °Clear

Allen, Sunday, 18 October

Clear. High 63°, low 41°.

Pressure30.45 inHg
Wind10.5 mph S
Humidity43%
Visibility6.2 mi
Dew point36°
Mon, 1966° / 42°0Partly cloudy
66 °Partly cloudy

Allen, Monday, 19 October

Partly cloudy. High 66°, low 42°.

Pressure30.39 inHg
Wind3.7 mph S
Humidity51%
Visibility6.2 mi
Dew point44°
Tue, 2068° / 43°0Clear
68 °Clear

Allen, Tuesday, 20 October

Clear. High 68°, low 43°.

Pressure30.39 inHg
Wind2.9 mph SE
Humidity47%
Visibility6.2 mi
Dew point45°
Wed, 2171° / 47°0Clear
71 °Clear

Allen, Wednesday, 21 October

Clear. High 71°, low 47°.

Pressure30.27 inHg
Wind1.8 mph SW
Humidity50%
Visibility6.2 mi
Dew point47°
Thu, 2271° / 48°0Clear
71 °Clear

Allen, Thursday, 22 October

Clear. High 71°, low 48°.

Pressure30.27 inHg
Wind6 mph E
Humidity46%
Visibility—
Dew point46°
Fri, 2375° / 51°0Overcast
75 °Overcast

Allen, Friday, 23 October

Overcast. High 75°, low 51°.

Pressure30.24 inHg
Wind8.8 mph SE
Humidity40%
Visibility—
Dew point43°
Sat, 2476° / 56°0Overcast
76 °Overcast

Allen, Saturday, 24 October

Overcast. High 76°, low 56°.

Pressure30.24 inHg
Wind10.6 mph S
Humidity26%
Visibility—
Dew point33°
Sun, 2580° / 60°0Overcast
80 °Overcast

Allen, Sunday, 25 October

Overcast. High 80°, low 60°.

Pressure30.18 inHg
Wind12.5 mph SW
Humidity27%
Visibility—
Dew point38°
Mon, 2674° / 60°0.07Light rain
74 °Light rain

Allen, Monday, 26 October

Light rain. High 74°, low 60°.

Pressure30.12 inHg
Wind11.5 mph N
Humidity47%
Visibility—
Dew point51°
Tue, 2761° / 48°0.08Light rain
61 °Light rain

Allen, Tuesday, 27 October

Light rain. High 61°, low 48°.

Pressure30.30 inHg
Wind14.9 mph NE
Humidity50%
Visibility—
Dew point42°
Wed, 2863° / 42°0Overcast
63 °Overcast

Allen, Wednesday, 28 October

Overcast. High 63°, low 42°.

Pressure30.27 inHg
Wind13.1 mph SE
Humidity38%
Visibility—
Dew point32°
Thu, 2970° / 48°0.39Rain
70 °Rain

Allen, Thursday, 29 October

Rain. High 70°, low 48°.

Pressure29.94 inHg
Wind14.4 mph SE
Humidity76%
Visibility—
Dew point53°
Fri, 3069° / 60°0.67Rain
69 °Rain

Allen, Friday, 30 October

Rain. High 69°, low 60°.

Pressure29.85 inHg
Wind17.6 mph S
Humidity89%
Visibility—
Dew point57°
Sat, 3171° / 56°0.72Rain
71 °Rain

Allen, Saturday, 31 October

Rain. High 71°, low 56°.

Pressure29.85 inHg
Wind20 mph SW
Humidity64%
Visibility—
Dew point57°
Sun, 0177° / 53°0.03Light rain
77 °Light rain

Allen, Sunday, 1 November

Light rain. High 77°, low 53°.

Pressure30.09 inHg
Wind11.7 mph S
Humidity69%
Visibility—
Dew point60°

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 Allen, 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 Allen, 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.