Weather in Collinsville, IL
Collinsville, Saturday, 14 November, 14:37
Clear. Feels like 48°. High 48°, low 28°.
Monthly outlook for Collinsville, IL: average high 58.2°, average low 41.9°. That is 3.9° above the climate normal for November. Precipitation is expected on 3 days (about 0.6 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 20 November (70.1°), the coolest 15 November (26.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 14 November – 23 November | 57.3° | 52.7° | +2.5° |
| 24 November – 3 December | 59.8° | 47.8° | +6.7° |
| 4 December – 13 December | at normal | 43.5° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Edwardsville (8 mi).
0
Collinsville, Sunday, 15 November
Partly cloudy. High 52°, low 27°.
0Collinsville, Monday, 16 November
Clear. High 52°, low 32°.
0Collinsville, Tuesday, 17 November
Clear. High 55°, low 35°.
0
Collinsville, Wednesday, 18 November
Overcast. High 59°, low 40°.
0.02
Collinsville, Thursday, 19 November
Light rain. High 64°, low 46°.
0Collinsville, Friday, 20 November
Overcast. High 70°, low 51°.
0.05Collinsville, Saturday, 21 November
Light rain. High 67°, low 55°.
0
Collinsville, Sunday, 22 November
Mostly clear. High 55°, low 43°.
0Collinsville, Monday, 23 November
Clear. High 51°, low 36°.
0Collinsville, Tuesday, 24 November
Overcast. High 50°, low 33°.
0Collinsville, Wednesday, 25 November
Overcast. High 58°, low 44°.
0Collinsville, Thursday, 26 November
Overcast. High 63°, low 45°.
0.47Collinsville, Friday, 27 November
Rain. High 55°, low 50°.
0.06Collinsville, Saturday, 28 November
Light rain. High 65°, low 54°.
0Collinsville, Sunday, 29 November
Overcast. High 68°, low 54°.
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.
0.09Collinsville, Sunday, 13 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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