As of 07:56 CDT

Weather in Allen, IL

66°

Allen, Wednesday, 14 October, 07:56

Overcast. Feels like 67°. High 80°, low 66°.

Pressure30.00 inHg

Wind4.3 mph N

Humidity100%

Visibility6.2 mi

Dew point66°

See detailed hourly forecast

Thu, 1577° / 65°

0.95

77 °

Allen, Thursday, 15 October

Rain. High 77°, low 65°.

Pressure29.94 inHg

Wind9.9 mph S

Humidity92%

Visibility1.9 mi

Dew point70°

Fri, 1663° / 49°

0.05

63 °

Allen, Friday, 16 October

Light rain. High 63°, low 49°.

Pressure30.15 inHg

Wind19.2 mph NW

Humidity55%

Visibility6.2 mi

Dew point38°

Sat, 1757° / 41°

57 °

Allen, Saturday, 17 October

Clear. High 57°, low 41°.

Pressure30.56 inHg

Wind1.8 mph NE

Humidity47%

Visibility6.2 mi

Dew point33°

Sun, 1863° / 43°

63 °

Allen, Sunday, 18 October

Clear. High 63°, low 43°.

Pressure30.45 inHg

Wind10.1 mph S

Humidity37%

Visibility—

Dew point33°

Mon, 1967° / 43°

67 °

Allen, Monday, 19 October

Overcast. High 67°, low 43°.

Pressure30.36 inHg

Wind7.8 mph S

Humidity44%

Visibility—

Dew point40°

Tue, 2071° / 53°

71 °

Allen, Tuesday, 20 October

Mostly clear. High 71°, low 53°.

Pressure30.27 inHg

Wind6 mph S

Humidity43%

Visibility—

Dew point43°

Wed, 2171° / 52°

71 °

Allen, Wednesday, 21 October

Clear. High 71°, low 52°.

Pressure30.12 inHg

Wind9.4 mph SW

Humidity47%

Visibility—

Dew point46°

Thu, 2262° / 49°

62 °

Allen, Thursday, 22 October

Partly cloudy. High 62°, low 49°.

Pressure30.21 inHg

Wind13.9 mph NE

Humidity52%

Visibility—

Dew point44°

Fri, 2356° / 41°

56 °

Allen, Friday, 23 October

Clear. High 56°, low 41°.

Pressure30.42 inHg

Wind11.6 mph E

Humidity35%

Visibility—

Dew point26°

Sat, 2459° / 39°

59 °

Allen, Saturday, 24 October

Overcast. High 59°, low 39°.

Pressure30.24 inHg

Wind8.9 mph NW

Humidity29%

Visibility—

Dew point22°

Sun, 2553° / 44°

0.06

53 °

Allen, Sunday, 25 October

Light rain. High 53°, low 44°.

Pressure30.06 inHg

Wind16.5 mph NW

Humidity64%

Visibility—

Dew point39°

Mon, 2655° / 35°

55 °

Allen, Monday, 26 October

Clear. High 55°, low 35°.

Pressure30.12 inHg

Wind7.2 mph W

Humidity37%

Visibility—

Dew point24°

Tue, 2759° / 42°

59 °

Allen, Tuesday, 27 October

Overcast. High 59°, low 42°.

Pressure30.00 inHg

Wind6.3 mph SW

Humidity47%

Visibility—

Dew point34°

Wed, 2860° / 52°

0.02

60 °

Allen, Wednesday, 28 October

Light rain. High 60°, low 52°.

Pressure29.94 inHg

Wind9.8 mph E

Humidity43%

Visibility—

Dew point37°

Thu, 2953° / 48°

0.07

53 °

Allen, Thursday, 29 October

Light rain. High 53°, low 48°.

Pressure29.94 inHg

Wind8.8 mph E

Humidity75%

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 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.