Weather in Collinsville, IL
Collinsville, Friday, 13 November, 12:25
Overcast. Feels like 41°. High 44°, low 36°.
Monthly outlook for Collinsville, IL: average high 50.5°, average low 35.1°. That is 0.6° below the climate normal for November. Precipitation is expected on 2 days (about 0.2 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 21 November (69.7°), the coolest 26 November (19.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 13 November – 22 November | 56° | 52.9° | +1.7° |
| 23 November – 2 December | 41.3° | 48.3° | -3.9° |
| 3 December – 12 December | at normal | 43.8° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Edwardsville (8 mi).
0
Collinsville, Saturday, 14 November
Clear. High 48°, low 34°.
0Collinsville, Sunday, 15 November
Overcast. High 49°, low 32°.
0Collinsville, Monday, 16 November
Clear. High 52°, low 34°.
0
Collinsville, Tuesday, 17 November
Partly cloudy. High 54°, low 35°.
0Collinsville, Wednesday, 18 November
Overcast. High 60°, low 38°.
0.06
Collinsville, Thursday, 19 November
Light rain. High 58°, low 49°.
0Collinsville, Friday, 20 November
Overcast. High 65°, low 54°.
0.02Collinsville, Saturday, 21 November
Light rain. High 70°, low 53°.
0.12Collinsville, Sunday, 22 November
Light rain. High 60°, low 42°.
0Collinsville, Monday, 23 November
Clear. High 47°, low 32°.
0.01
Collinsville, Tuesday, 24 November
Light snow. High 30°, low 23°.
0Collinsville, Wednesday, 25 November
Clear. High 35°, low 20°.
0Collinsville, Thursday, 26 November
Clear. High 42°, low 19°.
0Collinsville, Friday, 27 November
Clear. High 47°, low 32°.
0Collinsville, Saturday, 28 November
Clear. High 48°, low 27°.
0.08Collinsville, Sunday, 29 November
Climate normal for this date — 60-year average.
0.18
Collinsville, Monday, 30 November
Climate normal for this date — 60-year average.
0.12Collinsville, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.09Collinsville, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.13Collinsville, Thursday, 3 December
Climate normal for this date — 60-year average.
0.08Collinsville, Friday, 4 December
Climate normal for this date — 60-year average.
0.09Collinsville, Saturday, 5 December
Climate normal for this date — 60-year average.
0.06Collinsville, Sunday, 6 December
Climate normal for this date — 60-year average.
0.09Collinsville, Monday, 7 December
Climate normal for this date — 60-year average.
0.08Collinsville, Tuesday, 8 December
Climate normal for this date — 60-year average.
0.07Collinsville, Wednesday, 9 December
Climate normal for this date — 60-year average.
0.11Collinsville, Thursday, 10 December
Climate normal for this date — 60-year average.
0.1Collinsville, Friday, 11 December
Climate normal for this date — 60-year average.
0.07Collinsville, Saturday, 12 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 Collinsville, 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 Collinsville, 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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