Weather in Deer Park, IL
Deer Park, Wednesday, 11 November, 21:16
Overcast. Feels like 44°. High 53°, low 40°.
Monthly outlook for Deer Park, IL: average high 46.6°, average low 35.2°. That is 1.1° above the climate normal for November. Precipitation is expected on 3 days (about 1.0 inches), against a normal of 4 days and 1.3 inches. The warmest day looks like 22 November (56.3°), the coolest 26 November (24.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 11 November – 20 November | 48.8° | 45.6° | +1.8° |
| 21 November – 30 November | 42.9° | 41.9° | +0.6° |
| 1 December – 10 December | at normal | 37.2° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Highwood (14 mi).
0Deer Park, Thursday, 12 November
Overcast. High 47°, low 31°.
0Deer Park, Friday, 13 November
Overcast. High 44°, low 31°.
0
Deer Park, Saturday, 14 November
Clear. High 43°, low 29°.
0Deer Park, Sunday, 15 November
Clear. High 45°, low 29°.
0
Deer Park, Monday, 16 November
Partly cloudy. High 49°, low 31°.
0Deer Park, Tuesday, 17 November
Partly cloudy. High 50°, low 34°.
0Deer Park, Wednesday, 18 November
Clear. High 51°, low 36°.
0Deer Park, Thursday, 19 November
Overcast. High 53°, low 40°.
0Deer Park, Friday, 20 November
Overcast. High 55°, low 46°.
0Deer Park, Saturday, 21 November
Overcast. High 48°, low 43°.
0.16
Deer Park, Sunday, 22 November
Light rain. High 56°, low 45°.
0Deer Park, Monday, 23 November
Overcast. High 45°, low 42°.
0.79
Deer Park, Tuesday, 24 November
Snow. High 42°, low 32°.
0.01Deer Park, Wednesday, 25 November
Light snow. High 36°, low 30°.
0
Deer Park, Thursday, 26 November
Mostly clear. High 31°, low 24°.
0.21Deer Park, Friday, 27 November
Climate normal for this date — 60-year average.
0.12
Deer Park, Saturday, 28 November
Climate normal for this date — 60-year average.
0.07Deer Park, Sunday, 29 November
Climate normal for this date — 60-year average.
0.07Deer Park, Monday, 30 November
Climate normal for this date — 60-year average.
0.15Deer Park, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.07Deer Park, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.09Deer Park, Thursday, 3 December
Climate normal for this date — 60-year average.
0.06Deer Park, Friday, 4 December
Climate normal for this date — 60-year average.
0.08Deer Park, Saturday, 5 December
Climate normal for this date — 60-year average.
0.06Deer Park, Sunday, 6 December
Climate normal for this date — 60-year average.
0.12Deer Park, Monday, 7 December
Climate normal for this date — 60-year average.
0.08Deer Park, Tuesday, 8 December
Climate normal for this date — 60-year average.
0.09Deer Park, Wednesday, 9 December
Climate normal for this date — 60-year average.
0.09Deer Park, Thursday, 10 December
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 Deer 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 Deer 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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