Weather in Deer Park, IL
Deer Park, Saturday, 31 October, 21:18
Overcast. Feels like 53°. High 60°, low 51°.
Monthly outlook for Deer Park, IL: average high 54.4°, average low 45.2°. That is 2.8° above the climate normal for October. Precipitation is expected on 5 days (about 0.8 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 3 November (69.9°), the coolest 11 November (35°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 31 October – 9 November | 57.6° | 51.2° | +3.6° |
| 10 November – 19 November | 49° | 46° | +1.7° |
| 20 November – 29 November | at normal | 42.3° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Highwood (14 mi).
0Deer Park, Sunday, 1 November
Overcast. High 68°, low 53°.
0.16
Deer Park, Monday, 2 November
Light rain. High 62°, low 55°.
0.11Deer Park, Tuesday, 3 November
Light rain. High 70°, low 61°.
0.39Deer Park, Wednesday, 4 November
Rain. High 63°, low 56°.
0.04Deer Park, Thursday, 5 November
Light rain. High 55°, low 50°.
0.11Deer Park, Friday, 6 November
Light rain. High 50°, low 45°.
0
Deer Park, Saturday, 7 November
Partly cloudy. High 53°, low 42°.
0.01Deer Park, Sunday, 8 November
Light rain. High 48°, low 40°.
0
Deer Park, Monday, 9 November
Clear. High 48°, low 38°.
0Deer Park, Tuesday, 10 November
Clear. High 47°, low 37°.
0Deer Park, Wednesday, 11 November
Clear. High 47°, low 35°.
0.01Deer Park, Thursday, 12 November
Light rain. High 47°, low 38°.
0.03Deer Park, Friday, 13 November
Light rain. High 57°, low 45°.
0Deer Park, Saturday, 14 November
Overcast. High 48°, low 40°.
0Deer Park, Sunday, 15 November
Partly cloudy. High 48°, low 35°.
0.05
Deer Park, Monday, 16 November
Climate normal for this date — 60-year average.
0.09Deer Park, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.11Deer Park, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.07Deer Park, Thursday, 19 November
Climate normal for this date — 60-year average.
0.08Deer Park, Friday, 20 November
Climate normal for this date — 60-year average.
0.11Deer Park, Saturday, 21 November
Climate normal for this date — 60-year average.
0.04Deer Park, Sunday, 22 November
Climate normal for this date — 60-year average.
0.08Deer Park, Monday, 23 November
Climate normal for this date — 60-year average.
0.08Deer Park, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.09
Deer Park, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.12Deer Park, Thursday, 26 November
Climate normal for this date — 60-year average.
0.21Deer Park, Friday, 27 November
Climate normal for this date — 60-year average.
0.12Deer 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.
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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