As of 07:32 CDT

Weather in Allerton, IL

64°

Allerton, Thursday, 15 October, 07:32

Overcast. Feels like 64°. High 77°, low 63°.

Pressure30.06 inHg

Wind7.8 mph E

Humidity86%

Visibility6.2 mi

Dew point60°

See detailed hourly forecast

Fri, 1668° / 49°

0.16

68 °

Allerton, Friday, 16 October

Rain. High 68°, low 49°.

Pressure30.06 inHg

Wind17.9 mph NW

Humidity49%

Visibility6.2 mi

Dew point38°

Sat, 1756° / 41°

56 °

Allerton, Saturday, 17 October

Mostly clear. High 56°, low 41°.

Pressure30.56 inHg

Wind5.2 mph N

Humidity52%

Visibility6.2 mi

Dew point36°

Sun, 1863° / 40°

63 °

Allerton, Sunday, 18 October

Clear. High 63°, low 40°.

Pressure30.53 inHg

Wind9.4 mph S

Humidity36%

Visibility6.2 mi

Dew point31°

Mon, 1966° / 41°

66 °

Allerton, Monday, 19 October

Clear. High 66°, low 41°.

Pressure30.39 inHg

Wind5.8 mph SE

Humidity35%

Visibility—

Dew point34°

Tue, 2069° / 43°

69 °

Allerton, Tuesday, 20 October

Clear. High 69°, low 43°.

Pressure30.30 inHg

Wind5.4 mph SE

Humidity38%

Visibility—

Dew point38°

Wed, 2170° / 51°

70 °

Allerton, Wednesday, 21 October

Clear. High 70°, low 51°.

Pressure30.33 inHg

Wind7 mph NE

Humidity33%

Visibility—

Dew point36°

Thu, 2271° / 50°

71 °

Allerton, Thursday, 22 October

Overcast. High 71°, low 50°.

Pressure30.30 inHg

Wind7.3 mph SE

Humidity35%

Visibility—

Dew point38°

Fri, 2374° / 51°

74 °

Allerton, Friday, 23 October

Overcast. High 74°, low 51°.

Pressure30.18 inHg

Wind12.5 mph S

Humidity36%

Visibility—

Dew point41°

Sat, 2469° / 54°

0.17

69 °

Allerton, Saturday, 24 October

Light rain. High 69°, low 54°.

Pressure30.18 inHg

Wind12.9 mph S

Humidity41%

Visibility—

Dew point43°

Sun, 2563° / 47°

0.26

63 °

Allerton, Sunday, 25 October

Rain. High 63°, low 47°.

Pressure30.15 inHg

Wind15.6 mph W

Humidity66%

Visibility—

Dew point47°

Mon, 2654° / 40°

54 °

Allerton, Monday, 26 October

Clear. High 54°, low 40°.

Pressure30.36 inHg

Wind11.1 mph NW

Humidity33%

Visibility—

Dew point23°

Tue, 2749° / 40°

49 °

Allerton, Tuesday, 27 October

Overcast. High 49°, low 40°.

Pressure30.27 inHg

Wind9.3 mph NW

Humidity57%

Visibility—

Dew point33°

Wed, 2858° / 35°

58 °

Allerton, Wednesday, 28 October

Clear. High 58°, low 35°.

Pressure30.15 inHg

Wind14.1 mph SW

Humidity40%

Visibility—

Dew point29°

Thu, 2964° / 47°

64 °

Allerton, Thursday, 29 October

Partly cloudy. High 64°, low 47°.

Pressure30.03 inHg

Wind11.7 mph SW

Humidity42%

Visibility—

Dew point38°

Fri, 3044° / 37°

44 °

Allerton, Friday, 30 October

Clear. High 44°, low 37°.

Pressure30.45 inHg

Wind18.4 mph N

Humidity30%

Visibility—

Dew point14°

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.