Weather in McCook, IL
McCook, Sunday, 11 October, 03:36
Mostly clear. Feels like 59°. High 78°, low 59°.
Monthly outlook for McCook, IL: average high 63.6°, average low 50.1°. That is 1.9° above the climate normal for October. Precipitation is expected on 3 days (about 1.3 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 12 October (85.4°), the coolest 18 October (34.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 11 October – 20 October | 64.1° | 61.3° | +1.6° |
| 21 October – 30 October | 62.8° | 57.6° | +2.9° |
| 31 October – 9 November | at normal | 53.3° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Summit (1 mi).
0
McCook, Monday, 12 October
Partly cloudy. High 85°, low 66°.
0.01
McCook, Tuesday, 13 October
Light rain. High 79°, low 67°.
0.44McCook, Wednesday, 14 October
Heavy rain. High 67°, low 58°.
0.57McCook, Thursday, 15 October
Rain. High 57°, low 55°.
0.02McCook, Friday, 16 October
Light rain. High 59°, low 44°.
0.02
McCook, Saturday, 17 October
Light snow. High 45°, low 35°.
0
McCook, Sunday, 18 October
Clear. High 48°, low 35°.
0McCook, Monday, 19 October
Partly cloudy. High 58°, low 40°.
0McCook, Tuesday, 20 October
Clear. High 65°, low 46°.
0McCook, Wednesday, 21 October
Clear. High 69°, low 51°.
0McCook, Thursday, 22 October
Partly cloudy. High 71°, low 58°.
0
McCook, Friday, 23 October
Mostly clear. High 66°, low 53°.
0.21McCook, Saturday, 24 October
Rain. High 61°, low 49°.
0
McCook, Sunday, 25 October
Overcast. High 52°, low 43°.
0McCook, Monday, 26 October
Clear. High 58°, low 45°.
0.1
McCook, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.06McCook, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.06McCook, Thursday, 29 October
Climate normal for this date — 60-year average.
0.12McCook, Friday, 30 October
Climate normal for this date — 60-year average.
0.13McCook, Saturday, 31 October
Climate normal for this date — 60-year average.
0.18McCook, Sunday, 1 November
Climate normal for this date — 60-year average.
0.12McCook, Monday, 2 November
Climate normal for this date — 60-year average.
0.07McCook, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.09McCook, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.12McCook, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07McCook, Friday, 6 November
Climate normal for this date — 60-year average.
0.06McCook, Saturday, 7 November
Climate normal for this date — 60-year average.
0.06McCook, Sunday, 8 November
Climate normal for this date — 60-year average.
0.13McCook, Monday, 9 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 McCook, 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 McCook, 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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