Weather in Highland Park, IL
Highland Park, Saturday, 8 August, 23:59
Clear. Feels like 67°. High 85°, low 64°.
Monthly outlook for Highland Park, IL: average high 77.9°, average low 65.3°. That is 0.1° above the climate normal for August. Precipitation is expected on 3 days (about 2.9 inches), against a normal of 6 days and 1.8 inches. The warmest day looks like 18 August (85.7°), the coolest 20 August (57.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 79.9° | 77.9° | +1.1° |
| 19 August – 28 August | 74.7° | 77.8° | -1.7° |
| 29 August – 7 September | at normal | 76.1° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Highwood (2 mi).
0.97
Highland Park, Monday, 10 August
Heavy rain. High 86°, low 71°.
0.54Highland Park, Tuesday, 11 August
Heavy rain. High 83°, low 70°.
0
Highland Park, Wednesday, 12 August
Overcast. High 81°, low 69°.
0Highland Park, Thursday, 13 August
Overcast. High 71°, low 66°.
0
Highland Park, Friday, 14 August
Clear. High 76°, low 62°.
0Highland Park, Saturday, 15 August
Overcast. High 76°, low 67°.
0Highland Park, Sunday, 16 August
Overcast. High 75°, low 65°.
0.01Highland Park, Monday, 17 August
Light rain. High 81°, low 66°.
0Highland Park, Tuesday, 18 August
Overcast. High 86°, low 69°.
0Highland Park, Wednesday, 19 August
Light rain. High 75°, low 64°.
0Highland Park, Thursday, 20 August
Overcast. High 69°, low 58°.
0Highland Park, Friday, 21 August
Clear. High 72°, low 58°.
0.02Highland Park, Saturday, 22 August
Light rain. High 69°, low 62°.
0
Highland Park, Sunday, 23 August
Mostly clear. High 82°, low 66°.
0Highland Park, Monday, 24 August
Overcast. High 81°, low 65°.
0.07
Highland Park, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.14
Highland Park, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.1Highland Park, Thursday, 27 August
Climate normal for this date — 60-year average.
0.12Highland Park, Friday, 28 August
Climate normal for this date — 60-year average.
0.13Highland Park, Saturday, 29 August
Climate normal for this date — 60-year average.
0.09Highland Park, Sunday, 30 August
Climate normal for this date — 60-year average.
0.06Highland Park, Monday, 31 August
Climate normal for this date — 60-year average.
0.1Highland Park, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.04Highland Park, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.09Highland Park, Thursday, 3 September
Climate normal for this date — 60-year average.
0.08Highland Park, Friday, 4 September
Climate normal for this date — 60-year average.
0.08Highland Park, Saturday, 5 September
Climate normal for this date — 60-year average.
0.09Highland Park, Sunday, 6 September
Climate normal for this date — 60-year average.
0.07Highland 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 Highland 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 Highland 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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