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As of 11:31 CDT

Weather in Grand Tower, IL

54°Current weather

Grand Tower, Saturday, 17 October, 11:31

Clear. Feels like 51°. High 56°, low 44°.

Pressure30.53 inHg
Wind6.4 mph N
Humidity60%
Visibility6.2 mi
Dew point40°
Sun, 1864° / 43°0Clear
64 °Clear

Grand Tower, Sunday, 18 October

Clear. High 64°, low 43°.

Pressure30.50 inHg
Wind5.5 mph SE
Humidity48%
Visibility6.2 mi
Dew point40°
Mon, 1968° / 46°0Clear
68 °Clear

Grand Tower, Monday, 19 October

Clear. High 68°, low 46°.

Pressure30.39 inHg
Wind1.3 mph S
Humidity49%
Visibility6.2 mi
Dew point46°
Tue, 2070° / 47°0Mostly clear
70 °Mostly clear

Grand Tower, Tuesday, 20 October

Mostly clear. High 70°, low 47°.

Pressure30.36 inHg
Wind3.1 mph E
Humidity47%
Visibility6.2 mi
Dew point47°
Wed, 2172° / 48°0Clear
72 °Clear

Grand Tower, Wednesday, 21 October

Clear. High 72°, low 48°.

Pressure30.27 inHg
Wind3.7 mph NE
Humidity42%
Visibility—
Dew point44°
Thu, 2272° / 51°0Clear
72 °Clear

Grand Tower, Thursday, 22 October

Clear. High 72°, low 51°.

Pressure30.24 inHg
Wind3.7 mph NE
Humidity38%
Visibility—
Dew point42°
Fri, 2380° / 54°0Mostly clear
80 °Mostly clear

Grand Tower, Friday, 23 October

Mostly clear. High 80°, low 54°.

Pressure30.15 inHg
Wind6.4 mph SE
Humidity25%
Visibility—
Dew point36°
Sat, 2477° / 56°0Overcast
77 °Overcast

Grand Tower, Saturday, 24 October

Overcast. High 77°, low 56°.

Pressure30.15 inHg
Wind10.5 mph S
Humidity28%
Visibility—
Dew point38°
Sun, 2582° / 62°0Overcast
82 °Overcast

Grand Tower, Sunday, 25 October

Overcast. High 82°, low 62°.

Pressure30.12 inHg
Wind13.8 mph SW
Humidity32%
Visibility—
Dew point45°
Mon, 2681° / 60°0Partly cloudy
81 °Partly cloudy

Grand Tower, Monday, 26 October

Partly cloudy. High 81°, low 60°.

Pressure30.15 inHg
Wind8 mph S
Humidity46%
Visibility—
Dew point55°
Tue, 2778° / 62°0Overcast
78 °Overcast

Grand Tower, Tuesday, 27 October

Overcast. High 78°, low 62°.

Pressure30.12 inHg
Wind14.3 mph S
Humidity30%
Visibility—
Dew point40°
Wed, 2870° / 61°0.11Light rain
70 °Light rain

Grand Tower, Wednesday, 28 October

Light rain. High 70°, low 61°.

Pressure30.03 inHg
Wind17.4 mph S
Humidity56%
Visibility—
Dew point53°
Thu, 2963° / 61°0.08Light rain
63 °Light rain

Grand Tower, Thursday, 29 October

Light rain. High 63°, low 61°.

Pressure30.06 inHg
Wind13.2 mph S
Humidity93%
Visibility—
Dew point60°
Fri, 3078° / 64°0.02Light rain
78 °Light rain

Grand Tower, Friday, 30 October

Light rain. High 78°, low 64°.

Pressure29.83 inHg
Wind20.4 mph S
Humidity61%
Visibility—
Dew point62°
Sat, 3173° / 54°0.21Rain
73 °Rain

Grand Tower, Saturday, 31 October

Rain. High 73°, low 54°.

Pressure29.85 inHg
Wind22.5 mph S
Humidity68%
Visibility—
Dew point60°
Sun, 0171° / 47°0Clear
71 °Clear

Grand Tower, Sunday, 1 November

Clear. High 71°, low 47°.

Pressure30.15 inHg
Wind7.4 mph E
Humidity30%
Visibility—
Dew point33°

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 Grand Tower, 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 Grand Tower, 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.