Weather in La Grange Park, IL
La Grange Park, Sunday, 9 August, 09:21
Clear. Feels like 78°. High 87°, low 63°.
Monthly outlook for La Grange Park, IL: average high 82.3°, average low 65.6°. That is 1.2° above the climate normal for August. Precipitation is expected on 10 days (about 3.0 inches), against a normal of 6 days and 1.9 inches. The warmest day looks like 10 August (91.3°), the coolest 18 August (62.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 82.8° | 80.2° | +1.4° |
| 19 August – 28 August | 81.4° | 80.3° | +0.6° |
| 29 August – 7 September | at normal | 78.5° | — |
August records over 66 years
0.82
La Grange Park, Monday, 10 August
Heavy rain. High 91°, low 73°.
1.02La Grange Park, Tuesday, 11 August
Heavy rain. High 89°, low 67°.
0.04La Grange Park, Wednesday, 12 August
Light rain. High 88°, low 67°.
0.12La Grange Park, Thursday, 13 August
Light rain. High 77°, low 65°.
0
La Grange Park, Friday, 14 August
Overcast. High 76°, low 64°.
0.04La Grange Park, Saturday, 15 August
Light rain. High 78°, low 67°.
0.24La Grange Park, Sunday, 16 August
Rain. High 80°, low 65°.
0La Grange Park, Monday, 17 August
Light rain. High 80°, low 67°.
0La Grange Park, Tuesday, 18 August
Overcast. High 82°, low 62°.
0.03La Grange Park, Wednesday, 19 August
Light rain. High 82°, low 69°.
0.12La Grange Park, Thursday, 20 August
Light rain. High 76°, low 66°.
0.22La Grange Park, Friday, 21 August
Rain. High 84°, low 63°.
0.04La Grange Park, Saturday, 22 August
Light rain. High 85°, low 66°.
0La Grange Park, Sunday, 23 August
Clear. High 80°, low 63°.
0La Grange Park, Monday, 24 August
Clear. High 82°, low 64°.
0.08
La Grange Park, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.16
La Grange Park, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.14La Grange Park, Thursday, 27 August
Climate normal for this date — 60-year average.
0.14La Grange Park, Friday, 28 August
Climate normal for this date — 60-year average.
0.11La Grange Park, Saturday, 29 August
Climate normal for this date — 60-year average.
0.09La Grange Park, Sunday, 30 August
Climate normal for this date — 60-year average.
0.07La Grange Park, Monday, 31 August
Climate normal for this date — 60-year average.
0.14La Grange Park, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.06La Grange Park, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.08La Grange Park, Thursday, 3 September
Climate normal for this date — 60-year average.
0.09La Grange Park, Friday, 4 September
Climate normal for this date — 60-year average.
0.07La Grange Park, Saturday, 5 September
Climate normal for this date — 60-year average.
0.1La Grange Park, Sunday, 6 September
Climate normal for this date — 60-year average.
0.09La Grange Park, Monday, 7 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 La Grange 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 La Grange 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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