As of 17:51 CDT

Weather in Allen, IL

81°

Allen, Sunday, 11 October, 17:51

Clear. Feels like 82°. High 82°, low 53°.

Pressure29.91 inHg

Wind5.1 mph S

Humidity52%

Visibility6.2 mi

Dew point62°

See detailed hourly forecast

Mon, 1286° / 62°

86 °

Allen, Monday, 12 October

Mostly clear. High 86°, low 62°.

Pressure29.88 inHg

Wind11.8 mph SW

Humidity51%

Visibility6.2 mi

Dew point62°

Tue, 1387° / 68°

87 °

Allen, Tuesday, 13 October

Light rain. High 87°, low 68°.

Pressure29.85 inHg

Wind8.9 mph W

Humidity60%

Visibility6.2 mi

Dew point68°

Wed, 1477° / 67°

0.06

77 °

Allen, Wednesday, 14 October

Light rain. High 77°, low 67°.

Pressure30.03 inHg

Wind6.8 mph NE

Humidity67%

Visibility6.2 mi

Dew point65°

Thu, 1579° / 63°

0.93

79 °

Allen, Thursday, 15 October

Rain. High 79°, low 63°.

Pressure29.94 inHg

Wind11.7 mph S

Humidity82%

Visibility6.2 mi

Dew point70°

Fri, 1661° / 50°

0.13

61 °

Allen, Friday, 16 October

Rain. High 61°, low 50°.

Pressure30.45 inHg

Wind17.1 mph N

Humidity45%

Visibility—

Dew point38°

Sat, 1751° / 39°

51 °

Allen, Saturday, 17 October

Clear. High 51°, low 39°.

Pressure30.62 inHg

Wind6.7 mph NE

Humidity35%

Visibility—

Dew point22°

Sun, 1859° / 36°

59 °

Allen, Sunday, 18 October

Clear. High 59°, low 36°.

Pressure30.47 inHg

Wind16.6 mph S

Humidity33%

Visibility—

Dew point25°

Mon, 1967° / 43°

67 °

Allen, Monday, 19 October

Clear. High 67°, low 43°.

Pressure30.39 inHg

Wind12.6 mph SW

Humidity30%

Visibility—

Dew point30°

Tue, 2070° / 51°

70 °

Allen, Tuesday, 20 October

Overcast. High 70°, low 51°.

Pressure30.30 inHg

Wind11.6 mph S

Humidity50%

Visibility—

Dew point45°

Wed, 2172° / 59°

0.03

72 °

Allen, Wednesday, 21 October

Light rain. High 72°, low 59°.

Pressure30.15 inHg

Wind17.8 mph S

Humidity52%

Visibility—

Dew point52°

Thu, 2269° / 63°

0.11

69 °

Allen, Thursday, 22 October

Light rain. High 69°, low 63°.

Pressure30.21 inHg

Wind13.6 mph S

Humidity77%

Visibility—

Dew point59°

Fri, 2366° / 61°

1.18

66 °

Allen, Friday, 23 October

Rain. High 66°, low 61°.

Pressure30.09 inHg

Wind16.4 mph S

Humidity82%

Visibility—

Dew point57°

Sat, 2465° / 47°

0.78

65 °

Allen, Saturday, 24 October

Heavy rain. High 65°, low 47°.

Pressure30.06 inHg

Wind15.2 mph S

Humidity85%

Visibility—

Dew point50°

Sun, 2553° / 42°

53 °

Allen, Sunday, 25 October

Overcast. High 53°, low 42°.

Pressure30.18 inHg

Wind9.4 mph NW

Humidity58%

Visibility—

Dew point36°

Mon, 2656° / 41°

56 °

Allen, Monday, 26 October

Overcast. High 56°, low 41°.

Pressure30.00 inHg

Wind17.5 mph NW

Humidity46%

Visibility—

Dew point34°

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.