As of 12:34 CDT

Weather in Allen, IL

81°

Allen, Saturday, 10 October, 12:34

Overcast. Feels like 81°. High 81°, low 58°.

Pressure30.06 inHg

Wind10.4 mph S

Humidity48%

Visibility6.2 mi

Dew point59°

See detailed hourly forecast

Sun, 1182° / 51°

82 °

Allen, Sunday, 11 October

Clear. High 82°, low 51°.

Pressure30.00 inHg

Wind4.1 mph S

Humidity53%

Visibility6.2 mi

Dew point55°

Mon, 1287° / 60°

87 °

Allen, Monday, 12 October

Clear. High 87°, low 60°.

Pressure29.88 inHg

Wind11.5 mph SW

Humidity50%

Visibility6.2 mi

Dew point62°

Tue, 1383° / 71°

83 °

Allen, Tuesday, 13 October

Clear. High 83°, low 71°.

Pressure29.85 inHg

Wind8.1 mph W

Humidity58%

Visibility6.2 mi

Dew point65°

Wed, 1476° / 62°

0.02

76 °

Allen, Wednesday, 14 October

Light rain. High 76°, low 62°.

Pressure30.06 inHg

Wind8.7 mph NE

Humidity66%

Visibility6.2 mi

Dew point61°

Thu, 1559° / 56°

1.08

59 °

Allen, Thursday, 15 October

Rain. High 59°, low 56°.

Pressure30.24 inHg

Wind11.3 mph NE

Humidity88%

Visibility—

Dew point55°

Fri, 1661° / 42°

0.1

61 °

Allen, Friday, 16 October

Light rain. High 61°, low 42°.

Pressure29.97 inHg

Wind26.1 mph W

Humidity37%

Visibility—

Dew point30°

Sat, 1743° / 34°

43 °

Allen, Saturday, 17 October

Overcast. High 43°, low 34°.

Pressure30.36 inHg

Wind21.5 mph NW

Humidity44%

Visibility—

Dew point20°

Sun, 1849° / 29°

49 °

Allen, Sunday, 18 October

Clear. High 49°, low 29°.

Pressure30.53 inHg

Wind7.3 mph S

Humidity30%

Visibility—

Dew point15°

Mon, 1961° / 37°

61 °

Allen, Monday, 19 October

Overcast. High 61°, low 37°.

Pressure30.36 inHg

Wind14.2 mph S

Humidity27%

Visibility—

Dew point21°

Tue, 2066° / 42°

66 °

Allen, Tuesday, 20 October

Overcast. High 66°, low 42°.

Pressure30.27 inHg

Wind15.2 mph S

Humidity23%

Visibility—

Dew point23°

Wed, 2157° / 50°

0.18

57 °

Allen, Wednesday, 21 October

Rain. High 57°, low 50°.

Pressure30.03 inHg

Wind15.9 mph S

Humidity89%

Visibility—

Dew point48°

Thu, 2270° / 43°

70 °

Allen, Thursday, 22 October

Clear. High 70°, low 43°.

Pressure30.15 inHg

Wind13.7 mph SW

Humidity38%

Visibility—

Dew point37°

Fri, 2363° / 46°

63 °

Allen, Friday, 23 October

Mostly clear. High 63°, low 46°.

Pressure30.21 inHg

Wind9.4 mph N

Humidity34%

Visibility—

Dew point31°

Sat, 2466° / 46°

0.07

66 °

Allen, Saturday, 24 October

Light rain. High 66°, low 46°.

Pressure30.15 inHg

Wind8.5 mph SE

Humidity29%

Visibility—

Dew point29°

Sun, 2563° / 44°

0.64

63 °

Allen, Sunday, 25 October

Rain. High 63°, low 44°.

Pressure29.80 inHg

Wind20.4 mph S

Humidity75%

Visibility—

Dew point54°

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.