Weather in Oak Forest, IL
Oak Forest, Monday, 12 October, 00:31
Overcast. Feels like 62°. High 85°, low 62°.
Monthly outlook for Oak Forest, IL: average high 64°, average low 50.7°. That is 2.4° above the climate normal for October. Precipitation is expected on 4 days (about 3.7 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 13 October (85.3°), the coolest 18 October (38.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 12 October – 21 October | 69.8° | 60.8° | +5° |
| 22 October – 31 October | 54.3° | 57.2° | -1.6° |
| 1 November – 10 November | at normal | 52.7° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Orland Hills (5 mi).
0
Oak Forest, Tuesday, 13 October
Clear. High 85°, low 68°.
0.59
Oak Forest, Wednesday, 14 October
Heavy rain. High 71°, low 60°.
0.41Oak Forest, Thursday, 15 October
Rain. High 64°, low 59°.
0.03Oak Forest, Friday, 16 October
Light rain. High 59°, low 47°.
0Oak Forest, Saturday, 17 October
Clear. High 56°, low 41°.
0Oak Forest, Sunday, 18 October
Clear. High 60°, low 38°.
0Oak Forest, Monday, 19 October
Overcast. High 68°, low 47°.
0Oak Forest, Tuesday, 20 October
Overcast. High 72°, low 55°.
0.01Oak Forest, Wednesday, 21 October
Light rain. High 77°, low 60°.
2.07Oak Forest, Thursday, 22 October
Heavy rain. High 67°, low 52°.
0Oak Forest, Friday, 23 October
Overcast. High 50°, low 43°.
0Oak Forest, Saturday, 24 October
Clear. High 53°, low 39°.
0.47Oak Forest, Sunday, 25 October
Rain. High 49°, low 44°.
0.03Oak Forest, Monday, 26 October
Light rain. High 56°, low 48°.
0.03Oak Forest, Tuesday, 27 October
Light rain. High 51°, low 48°.
0.06
Oak Forest, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.06Oak Forest, Thursday, 29 October
Climate normal for this date — 60-year average.
0.11Oak Forest, Friday, 30 October
Climate normal for this date — 60-year average.
0.14
Oak Forest, Saturday, 31 October
Climate normal for this date — 60-year average.
0.17Oak Forest, Sunday, 1 November
Climate normal for this date — 60-year average.
0.12Oak Forest, Monday, 2 November
Climate normal for this date — 60-year average.
0.07Oak Forest, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.09Oak 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.
0.07Oak 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.
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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