Weather in Oak Forest, IL
Oak Forest, Monday, 19 October, 16:26
Clear. Feels like 68°. High 69°, low 39°.
Monthly outlook for Oak Forest, IL: average high 59.5°, average low 43.4°. That is 1.4° above the climate normal for October. Precipitation is expected on 1 day (about 0.4 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 25 October (69.5°), the coolest 29 October (33.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 19 October – 28 October | 62.2° | 58° | +2.3° |
| 29 October – 7 November | 55.1° | 54.3° | +0.5° |
| 8 November – 17 November | at normal | 48.7° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Orland Hills (5 mi).
0Oak Forest, Tuesday, 20 October
Clear. High 67°, low 43°.
0Oak Forest, Wednesday, 21 October
Clear. High 66°, low 43°.
0.02
Oak Forest, Thursday, 22 October
Light rain. High 67°, low 49°.
0Oak Forest, Friday, 23 October
Clear. High 60°, low 44°.
0
Oak Forest, Saturday, 24 October
Overcast. High 60°, low 42°.
0Oak Forest, Sunday, 25 October
Overcast. High 70°, low 47°.
0.02Oak Forest, Monday, 26 October
Light rain. High 63°, low 53°.
0Oak Forest, Tuesday, 27 October
Overcast. High 54°, low 43°.
0Oak Forest, Wednesday, 28 October
Clear. High 45°, low 36°.
0Oak Forest, Thursday, 29 October
Clear. High 49°, low 33°.
0Oak Forest, Friday, 30 October
Overcast. High 55°, low 36°.
0Oak Forest, Saturday, 31 October
Overcast. High 61°, low 44°.
0Oak Forest, Sunday, 1 November
Overcast. High 61°, low 50°.
0.34Oak Forest, Monday, 2 November
Rain. High 52°, low 47°.
0.01Oak Forest, Tuesday, 3 November
Light rain. High 53°, low 47°.
0.09
Oak Forest, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.12Oak Forest, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07
Oak Forest, Friday, 6 November
Climate normal for this date — 60-year average.
0.06Oak Forest, Saturday, 7 November
Climate normal for this date — 60-year average.
0.06Oak Forest, Sunday, 8 November
Climate normal for this date — 60-year average.
0.13Oak Forest, Monday, 9 November
Climate normal for this date — 60-year average.
0.14Oak Forest, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.07Oak Forest, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Oak Forest, Thursday, 12 November
Climate normal for this date — 60-year average.
0.06Oak Forest, Friday, 13 November
Climate normal for this date — 60-year average.
0.08Oak Forest, Saturday, 14 November
Climate normal for this date — 60-year average.
0.09Oak Forest, Sunday, 15 November
Climate normal for this date — 60-year average.
0.05Oak Forest, Monday, 16 November
Climate normal for this date — 60-year average.
0.09Oak Forest, Tuesday, 17 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 Oak Forest, 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 Oak Forest, 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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