Weather in Glen Carbon, IL
Glen Carbon, Saturday, 31 October, 18:29
Clear. Feels like 64°. High 67°, low 58°.
Monthly outlook for Glen Carbon, IL: average high 61.4°, average low 50.6°. That is 2.6° above the climate normal for October. Precipitation is expected on 5 days (about 1.7 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 3 November (73.4°), the coolest 12 November (37.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 31 October – 9 November | 65.1° | 58.6° | +3.6° |
| 10 November – 19 November | 55.2° | 53.7° | +0.9° |
| 20 November – 29 November | at normal | 49.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Edwardsville (2 mi).
0.04
Glen Carbon, Sunday, 1 November
Light rain. High 71°, low 60°.
0Glen Carbon, Monday, 2 November
Light rain. High 68°, low 58°.
0.78Glen Carbon, Tuesday, 3 November
Heavy rain. High 73°, low 66°.
0.54Glen Carbon, Wednesday, 4 November
Rain. High 65°, low 59°.
0.03Glen Carbon, Thursday, 5 November
Light rain. High 66°, low 56°.
0.01Glen Carbon, Friday, 6 November
Light rain. High 59°, low 52°.
0
Glen Carbon, Saturday, 7 November
Overcast. High 60°, low 51°.
0Glen Carbon, Sunday, 8 November
Overcast. High 61°, low 53°.
0Glen Carbon, Monday, 9 November
Overcast. High 61°, low 46°.
0Glen Carbon, Tuesday, 10 November
Overcast. High 62°, low 42°.
0Glen Carbon, Wednesday, 11 November
Overcast. High 63°, low 47°.
0.02Glen Carbon, Thursday, 12 November
Light rain. High 56°, low 37°.
0.17Glen Carbon, Friday, 13 November
Light rain. High 59°, low 43°.
0.07Glen Carbon, Saturday, 14 November
Light rain. High 46°, low 41°.
0Glen Carbon, Sunday, 15 November
Overcast. High 45°, low 40°.
0.11
Glen Carbon, Monday, 16 November
Climate normal for this date — 60-year average.
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.
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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