Weather in Glen Carbon, IL
Glen Carbon, Sunday, 8 November, 19:54
Clear. Feels like 49°. High 66°, low 34°.
Monthly outlook for Glen Carbon, IL: average high 59.1°, average low 42.7°. That is 3.1° above the climate normal for November. Precipitation is expected on 3 days (about 0.7 inches), against a normal of 4 days and 1.6 inches. The warmest day looks like 17 November (67.9°), the coolest 14 November (32.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 November – 17 November | 59.7° | 54.5° | +2.8° |
| 18 November – 27 November | 58.2° | 51° | +4° |
| 28 November – 7 December | at normal | 45.6° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Edwardsville (2 mi).
0
Glen Carbon, Monday, 9 November
Clear. High 67°, low 39°.
0Glen Carbon, Tuesday, 10 November
Clear. High 66°, low 44°.
0.02
Glen Carbon, Wednesday, 11 November
Light rain. High 65°, low 47°.
0
Glen Carbon, Thursday, 12 November
Partly cloudy. High 53°, low 42°.
0
Glen Carbon, Friday, 13 November
Overcast. High 42°, low 37°.
0Glen Carbon, Saturday, 14 November
Clear. High 49°, low 33°.
0Glen Carbon, Sunday, 15 November
Clear. High 59°, low 36°.
0Glen Carbon, Monday, 16 November
Overcast. High 62°, low 41°.
0Glen Carbon, Tuesday, 17 November
Overcast. High 68°, low 51°.
0.06Glen Carbon, Wednesday, 18 November
Light rain. High 61°, low 52°.
0Glen Carbon, Thursday, 19 November
Partly cloudy. High 62°, low 47°.
0Glen Carbon, Friday, 20 November
Overcast. High 55°, low 43°.
0.24Glen Carbon, Saturday, 21 November
Light rain. High 56°, low 46°.
0Glen Carbon, Sunday, 22 November
Overcast. High 51°, low 42°.
0.37Glen Carbon, Monday, 23 November
Rain. High 65°, low 50°.
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.
0.06Glen Carbon, Sunday, 6 December
Climate normal for this date — 60-year average.
0.09Glen Carbon, Monday, 7 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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