Weather in Glen Carbon, IL
Glen Carbon, Sunday, 1 November, 09:59
Overcast. Feels like 61°. High 67°, low 60°.
Monthly outlook for Glen Carbon, IL: average high 67.8°, average low 52.6°. That is 6.4° above the climate normal for November. Precipitation is expected on 3 days (about 1.6 inches), against a normal of 4 days and 1.7 inches. The warmest day looks like 16 November (78.3°), the coolest 13 November (42°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 1 November – 10 November | 66.3° | 58° | +4.7° |
| 11 November – 20 November | 70.2° | 53.3° | +9.4° |
| 21 November – 30 November | at normal | 49.2° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Edwardsville (2 mi).
0.02
Glen Carbon, Monday, 2 November
Light rain. High 75°, low 61°.
1.36Glen Carbon, Tuesday, 3 November
Heavy rain. High 74°, low 65°.
0Glen Carbon, Wednesday, 4 November
Light rain. High 64°, low 56°.
0
Glen Carbon, Thursday, 5 November
Partly cloudy. High 62°, low 52°.
0Glen Carbon, Friday, 6 November
Overcast. High 59°, low 51°.
0
Glen Carbon, Saturday, 7 November
Clear. High 65°, low 47°.
0
Glen Carbon, Sunday, 8 November
Mostly clear. High 64°, low 44°.
0Glen Carbon, Monday, 9 November
Clear. High 67°, low 46°.
0Glen Carbon, Tuesday, 10 November
Overcast. High 66°, low 47°.
0.02Glen Carbon, Wednesday, 11 November
Light rain. High 70°, low 53°.
0Glen Carbon, Thursday, 12 November
Partly cloudy. High 59°, low 47°.
0Glen Carbon, Friday, 13 November
Clear. High 68°, low 42°.
0.11Glen Carbon, Saturday, 14 November
Light rain. High 70°, low 51°.
0.01Glen Carbon, Sunday, 15 November
Light rain. High 76°, low 58°.
0Glen Carbon, Monday, 16 November
Overcast. High 78°, low 63°.
0.12Glen Carbon, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.17Glen Carbon, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.07Glen Carbon, Thursday, 19 November
Climate normal for this date — 60-year average.
0.1
Glen Carbon, Friday, 20 November
Climate normal for this date — 60-year average.
0.1Glen Carbon, Saturday, 21 November
Climate normal for this date — 60-year average.
0.09Glen 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.
0.17Glen 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.
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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