Weather in Glen Carbon, IL
Glen Carbon, Friday, 6 November, 11:09
Overcast. Feels like 49°. High 53°, low 39°.
Monthly outlook for Glen Carbon, IL: average high 59.8°, average low 44.7°. That is 3° above the climate normal for November. Precipitation is expected on 1 day (about 0.9 inches), against a normal of 4 days and 1.6 inches. The warmest day looks like 20 November (69.9°), the coolest 13 November (32.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 6 November – 15 November | 57.3° | 55.2° | +1.2° |
| 16 November – 25 November | 63.8° | 51.9° | +6.6° |
| 26 November – 5 December | at normal | 46.9° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Edwardsville (2 mi).
0Glen Carbon, Saturday, 7 November
Overcast. High 52°, low 37°.
0
Glen Carbon, Sunday, 8 November
Clear. High 62°, low 40°.
0Glen Carbon, Monday, 9 November
Clear. High 64°, low 43°.
0Glen Carbon, Tuesday, 10 November
Clear. High 65°, low 48°.
0Glen Carbon, Wednesday, 11 November
Clear. High 64°, low 45°.
0Glen Carbon, Thursday, 12 November
Overcast. High 51°, low 42°.
0Glen Carbon, Friday, 13 November
Overcast. High 46°, low 33°.
0Glen Carbon, Saturday, 14 November
Clear. High 52°, low 33°.
0Glen Carbon, Sunday, 15 November
Clear. High 64°, low 39°.
0Glen Carbon, Monday, 16 November
Overcast. High 64°, low 44°.
0
Glen Carbon, Tuesday, 17 November
Light rain. High 55°, low 52°.
0.03Glen Carbon, Wednesday, 18 November
Light rain. High 65°, low 54°.
0Glen Carbon, Thursday, 19 November
Overcast. High 67°, low 57°.
0Glen Carbon, Friday, 20 November
Overcast. High 70°, low 53°.
0.86Glen Carbon, Saturday, 21 November
Heavy rain. High 63°, low 58°.
0.09
Glen Carbon, Sunday, 22 November
Climate normal for this date — 60-year average.
0.1Glen Carbon, Monday, 23 November
Climate normal for this date — 60-year average.
0.15Glen Carbon, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.17
Glen Carbon, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.17Glen Carbon, Thursday, 26 November
Climate normal for this date — 60-year average.
0.21Glen Carbon, Friday, 27 November
Climate normal for this date — 60-year average.
0.11Glen Carbon, Saturday, 28 November
Climate normal for this date — 60-year average.
0.08Glen Carbon, Sunday, 29 November
Climate normal for this date — 60-year average.
0.18Glen Carbon, Monday, 30 November
Climate normal for this date — 60-year average.
0.12Glen Carbon, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.09Glen Carbon, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.13Glen Carbon, Thursday, 3 December
Climate normal for this date — 60-year average.
0.08Glen Carbon, Friday, 4 December
Climate normal for this date — 60-year average.
0.09Glen Carbon, Saturday, 5 December
Climate normal for this date — 60-year average.
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 Glen Carbon, 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 Glen Carbon, 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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