Weather in Oak Park, IL
Oak Park, Saturday, 8 August, 20:14
Clear. Feels like 78°. High 83°, low 69°.
Monthly outlook for Oak Park, IL: average high 81.2°, average low 66.4°. That is 0.6° above the climate normal for August. Precipitation is expected on 3 days (about 1.6 inches), against a normal of 6 days and 1.9 inches. The warmest day looks like 11 August (87.8°), the coolest 21 August (59°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 August – 17 August | 82.6° | 80.3° | +1.3° |
| 18 August – 27 August | 78.7° | 80.1° | -0.8° |
| 28 August – 6 September | at normal | 78.5° | — |
August records over 66 years
0.59
Oak Park, Sunday, 9 August
Rain. High 87°, low 65°.
0.72Oak Park, Monday, 10 August
Heavy rain. High 87°, low 72°.
0.26Oak Park, Tuesday, 11 August
Heavy rain. High 88°, low 72°.
0
Oak Park, Wednesday, 12 August
Overcast. High 84°, low 70°.
0Oak Park, Thursday, 13 August
Overcast. High 74°, low 66°.
0
Oak Park, Friday, 14 August
Clear. High 81°, low 64°.
0Oak Park, Saturday, 15 August
Overcast. High 77°, low 67°.
0Oak Park, Sunday, 16 August
Overcast. High 80°, low 67°.
0Oak Park, Monday, 17 August
Overcast. High 85°, low 68°.
0Oak Park, Tuesday, 18 August
Overcast. High 88°, low 70°.
0.02Oak Park, Wednesday, 19 August
Light rain. High 79°, low 67°.
0Oak Park, Thursday, 20 August
Overcast. High 69°, low 60°.
0Oak Park, Friday, 21 August
Clear. High 77°, low 59°.
0.01Oak Park, Saturday, 22 August
Light rain. High 72°, low 61°.
0Oak Park, Sunday, 23 August
Clear. High 86°, low 65°.
0.13
Oak Park, Monday, 24 August
Climate normal for this date — 60-year average.
0.07Oak Park, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.15
Oak Park, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.11Oak Park, Thursday, 27 August
Climate normal for this date — 60-year average.
0.13Oak Park, Friday, 28 August
Climate normal for this date — 60-year average.
0.11Oak Park, Saturday, 29 August
Climate normal for this date — 60-year average.
0.13Oak Park, Sunday, 30 August
Climate normal for this date — 60-year average.
0.07Oak Park, Monday, 31 August
Climate normal for this date — 60-year average.
0.12Oak Park, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.05Oak Park, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.09Oak Park, Thursday, 3 September
Climate normal for this date — 60-year average.
0.09Oak Park, Friday, 4 September
Climate normal for this date — 60-year average.
0.09Oak Park, Saturday, 5 September
Climate normal for this date — 60-year average.
0.1Oak Park, Sunday, 6 September
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 Park, 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 Park, 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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