Weather in Grand Tower, IL
Grand Tower, Sunday, 18 October, 08:00
Clear. Feels like 39°. High 64°, low 40°.
0Grand Tower, Monday, 19 October
Clear. High 68°, low 43°.
0Grand Tower, Tuesday, 20 October
Clear. High 70°, low 47°.
0Grand Tower, Wednesday, 21 October
Clear. High 71°, low 48°.
0Grand Tower, Thursday, 22 October
Clear. High 71°, low 49°.
0Grand Tower, Friday, 23 October
Clear. High 70°, low 52°.
0
Grand Tower, Saturday, 24 October
Overcast. High 79°, low 55°.
0Grand Tower, Sunday, 25 October
Overcast. High 72°, low 56°.
0Grand Tower, Monday, 26 October
Overcast. High 68°, low 50°.
0Grand Tower, Tuesday, 27 October
Overcast. High 75°, low 55°.
0.17
Grand Tower, Wednesday, 28 October
Light rain. High 74°, low 58°.
0.4Grand Tower, Thursday, 29 October
Rain. High 64°, low 59°.
0
Grand Tower, Friday, 30 October
Partly cloudy. High 76°, low 60°.
0.12Grand Tower, Saturday, 31 October
Light rain. High 80°, low 63°.
0Grand Tower, Sunday, 1 November
Overcast. High 81°, low 66°.
0.02Grand Tower, Monday, 2 November
Light rain. High 79°, low 67°.
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.
Sun and moon today
Weather history
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