Weather in Olympia Fields, IL
Olympia Fields, Sunday, 11 October, 05:59
Clear. Feels like 56°. High 77°, low 56°.
Monthly outlook for Olympia Fields, IL: average high 63°, average low 48.3°. That is 1.4° above the climate normal for October. Precipitation is expected on 3 days (about 1.6 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 12 October (84.9°), the coolest 18 October (33.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 11 October – 20 October | 63.8° | 61.5° | +1.3° |
| 21 October – 30 October | 61.5° | 57.9° | +2° |
| 31 October – 9 November | at normal | 53.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Arbury Hills (8 mi).
0
Olympia Fields, Monday, 12 October
Mostly clear. High 85°, low 65°.
0
Olympia Fields, Tuesday, 13 October
Clear. High 80°, low 69°.
0.59
Olympia Fields, Wednesday, 14 October
Heavy rain. High 68°, low 59°.
0.87Olympia Fields, Thursday, 15 October
Rain. High 58°, low 54°.
0
Olympia Fields, Friday, 16 October
Overcast. High 58°, low 45°.
0.02
Olympia Fields, Saturday, 17 October
Light snow. High 44°, low 34°.
0Olympia Fields, Sunday, 18 October
Mostly clear. High 47°, low 33°.
0
Olympia Fields, Monday, 19 October
Partly cloudy. High 57°, low 36°.
0Olympia Fields, Tuesday, 20 October
Clear. High 64°, low 42°.
0Olympia Fields, Wednesday, 21 October
Mostly clear. High 68°, low 48°.
0Olympia Fields, Thursday, 22 October
Overcast. High 69°, low 56°.
0Olympia Fields, Friday, 23 October
Mostly clear. High 64°, low 49°.
0.12Olympia Fields, Saturday, 24 October
Light rain. High 60°, low 47°.
0Olympia Fields, Sunday, 25 October
Overcast. High 51°, low 40°.
0Olympia Fields, Monday, 26 October
Mostly clear. High 57°, low 41°.
0.09Olympia Fields, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.06Olympia Fields, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.06Olympia Fields, Thursday, 29 October
Climate normal for this date — 60-year average.
0.11Olympia Fields, Friday, 30 October
Climate normal for this date — 60-year average.
0.15
Olympia Fields, Saturday, 31 October
Climate normal for this date — 60-year average.
0.17Olympia Fields, Sunday, 1 November
Climate normal for this date — 60-year average.
0.12Olympia Fields, Monday, 2 November
Climate normal for this date — 60-year average.
0.07Olympia Fields, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.09Olympia Fields, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.12Olympia Fields, Thursday, 5 November
Climate normal for this date — 60-year average.
0.08Olympia Fields, Friday, 6 November
Climate normal for this date — 60-year average.
0.06Olympia Fields, Saturday, 7 November
Climate normal for this date — 60-year average.
0.06Olympia Fields, Sunday, 8 November
Climate normal for this date — 60-year average.
0.14Olympia Fields, 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 Olympia Fields, 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 Olympia Fields, 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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