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As of 12:36 CDT

Weather in Grand Tower, IL

61°Current weather

Grand Tower, Sunday, 18 October, 12:36

Clear. Feels like 59°. High 63°, low 39°.

Pressure30.45 inHg
Wind4.7 mph SE
Humidity48%
Visibility6.2 mi
Dew point41°
Mon, 1968° / 43°0Clear
68 °Clear

Grand Tower, Monday, 19 October

Clear. High 68°, low 43°.

Pressure30.39 inHg
Wind2.6 mph S
Humidity55%
Visibility6.2 mi
Dew point48°
Tue, 2070° / 47°0Clear
70 °Clear

Grand Tower, Tuesday, 20 October

Clear. High 70°, low 47°.

Pressure30.36 inHg
Wind2.2 mph E
Humidity51%
Visibility6.2 mi
Dew point48°
Wed, 2170° / 47°0Clear
70 °Clear

Grand Tower, Wednesday, 21 October

Clear. High 70°, low 47°.

Pressure30.30 inHg
Wind1.6 mph N
Humidity50%
Visibility6.2 mi
Dew point49°
Thu, 2271° / 49°0Clear
71 °Clear

Grand Tower, Thursday, 22 October

Clear. High 71°, low 49°.

Pressure30.27 inHg
Wind3 mph N
Humidity54%
Visibility6.2 mi
Dew point50°
Fri, 2370° / 50°0Clear
70 °Clear

Grand Tower, Friday, 23 October

Clear. High 70°, low 50°.

Pressure30.27 inHg
Wind7.4 mph E
Humidity46%
Visibility—
Dew point45°
Sat, 2480° / 55°0Overcast
80 °Overcast

Grand Tower, Saturday, 24 October

Overcast. High 80°, low 55°.

Pressure30.33 inHg
Wind11.5 mph S
Humidity28%
Visibility—
Dew point40°
Sun, 2578° / 60°0Overcast
78 °Overcast

Grand Tower, Sunday, 25 October

Overcast. High 78°, low 60°.

Pressure30.36 inHg
Wind13.3 mph SW
Humidity33%
Visibility—
Dew point43°
Mon, 2674° / 57°0Overcast
74 °Overcast

Grand Tower, Monday, 26 October

Overcast. High 74°, low 57°.

Pressure30.27 inHg
Wind8.1 mph S
Humidity32%
Visibility—
Dew point39°
Tue, 2776° / 55°0Overcast
76 °Overcast

Grand Tower, Tuesday, 27 October

Overcast. High 76°, low 55°.

Pressure30.21 inHg
Wind9 mph SE
Humidity25%
Visibility—
Dew point35°
Wed, 2873° / 63°0.34Rain
73 °Rain

Grand Tower, Wednesday, 28 October

Rain. High 73°, low 63°.

Pressure30.00 inHg
Wind14.7 mph S
Humidity70%
Visibility—
Dew point60°
Thu, 2983° / 66°0.16Rain
83 °Rain

Grand Tower, Thursday, 29 October

Rain. High 83°, low 66°.

Pressure29.80 inHg
Wind13.6 mph S
Humidity60%
Visibility—
Dew point62°
Fri, 3087° / 66°0.03Light rain
87 °Light rain

Grand Tower, Friday, 30 October

Light rain. High 87°, low 66°.

Pressure29.74 inHg
Wind17.6 mph S
Humidity48%
Visibility—
Dew point60°
Sat, 3169° / 48°0.39Rain
69 °Rain

Grand Tower, Saturday, 31 October

Rain. High 69°, low 48°.

Pressure29.85 inHg
Wind17.6 mph SW
Humidity36%
Visibility—
Dew point37°
Sun, 0160° / 42°0Clear
60 °Clear

Grand Tower, Sunday, 1 November

Clear. High 60°, low 42°.

Pressure30.27 inHg
Wind10.3 mph NW
Humidity26%
Visibility—
Dew point21°
Mon, 0263° / 39°0Clear
63 °Clear

Grand Tower, Monday, 2 November

Clear. High 63°, low 39°.

Pressure30.39 inHg
Wind6.4 mph E
Humidity27%
Visibility—
Dew point24°

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.