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As of 10:29 CDT

Weather in Grand Tower, IL

73°Current weather

Grand Tower, Thursday, 15 October, 10:29

Overcast. Feels like 75°. High 85°, low 70°.

Pressure30.00 inHg
Wind8 mph S
Humidity95%
Visibility6.2 mi
Dew point72°
Fri, 1671° / 53°0.04Light rain
71 °Light rain

Grand Tower, Friday, 16 October

Light rain. High 71°, low 53°.

Pressure30.21 inHg
Wind16.6 mph NW
Humidity47%
Visibility6.2 mi
Dew point40°
Sat, 1759° / 46°0Clear
59 °Clear

Grand Tower, Saturday, 17 October

Clear. High 59°, low 46°.

Pressure30.56 inHg
Wind6 mph NE
Humidity52%
Visibility6.2 mi
Dew point39°
Sun, 1864° / 44°0Clear
64 °Clear

Grand Tower, Sunday, 18 October

Clear. High 64°, low 44°.

Pressure30.47 inHg
Wind5.5 mph SE
Humidity46%
Visibility6.2 mi
Dew point39°
Mon, 1968° / 48°0Mostly clear
68 °Mostly clear

Grand Tower, Monday, 19 October

Mostly clear. High 68°, low 48°.

Pressure30.39 inHg
Wind6.7 mph S
Humidity48%
Visibility—
Dew point44°
Tue, 2072° / 49°0Clear
72 °Clear

Grand Tower, Tuesday, 20 October

Clear. High 72°, low 49°.

Pressure30.33 inHg
Wind3.8 mph SE
Humidity54%
Visibility—
Dew point51°
Wed, 2176° / 54°0Clear
76 °Clear

Grand Tower, Wednesday, 21 October

Clear. High 76°, low 54°.

Pressure30.30 inHg
Wind5.7 mph E
Humidity32%
Visibility—
Dew point40°
Thu, 2277° / 54°0Mostly clear
77 °Mostly clear

Grand Tower, Thursday, 22 October

Mostly clear. High 77°, low 54°.

Pressure30.21 inHg
Wind5.2 mph SE
Humidity32%
Visibility—
Dew point41°
Fri, 2378° / 55°0Overcast
78 °Overcast

Grand Tower, Friday, 23 October

Overcast. High 78°, low 55°.

Pressure30.18 inHg
Wind8.8 mph SE
Humidity36%
Visibility—
Dew point45°
Sat, 2474° / 56°0Overcast
74 °Overcast

Grand Tower, Saturday, 24 October

Overcast. High 74°, low 56°.

Pressure30.18 inHg
Wind14.2 mph S
Humidity37%
Visibility—
Dew point44°
Sun, 2575° / 54°0Mostly clear
75 °Mostly clear

Grand Tower, Sunday, 25 October

Mostly clear. High 75°, low 54°.

Pressure30.42 inHg
Wind9.1 mph N
Humidity46%
Visibility—
Dew point48°
Mon, 2678° / 53°0Partly cloudy
78 °Partly cloudy

Grand Tower, Monday, 26 October

Partly cloudy. High 78°, low 53°.

Pressure30.39 inHg
Wind7 mph NE
Humidity40%
Visibility—
Dew point48°
Tue, 2778° / 59°0Overcast
78 °Overcast

Grand Tower, Tuesday, 27 October

Overcast. High 78°, low 59°.

Pressure30.21 inHg
Wind15.1 mph SW
Humidity36%
Visibility—
Dew point46°
Wed, 2877° / 58°0Overcast
77 °Overcast

Grand Tower, Wednesday, 28 October

Overcast. High 77°, low 58°.

Pressure30.12 inHg
Wind16.6 mph SW
Humidity38%
Visibility—
Dew point46°
Thu, 2982° / 66°0.02Light rain
82 °Light rain

Grand Tower, Thursday, 29 October

Light rain. High 82°, low 66°.

Pressure30.03 inHg
Wind18.3 mph SW
Humidity53%
Visibility—
Dew point57°
Fri, 3078° / 67°0.37Light rain
78 °Light rain

Grand Tower, Friday, 30 October

Light rain. High 78°, low 67°.

Pressure29.88 inHg
Wind17.2 mph SW
Humidity77%
Visibility—
Dew point65°

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.