Weather in Deer Park, IL
Deer Park, Saturday, 31 October, 08:13
Overcast. Feels like 51°. High 58°, low 51°.
Monthly outlook for Deer Park, IL: average high 59.2°, average low 49.2°. That is 5.5° above the climate normal for October. Precipitation is expected on 6 days (about 1.7 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 3 November (68.9°), the coolest 12 November (38.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 31 October – 9 November | 61.4° | 51.2° | +5.7° |
| 10 November – 19 November | 55.4° | 46° | +5.2° |
| 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).
0
Deer Park, Sunday, 1 November
Light rain. High 62°, low 49°.
0.08Deer Park, Monday, 2 November
Rain. High 59°, low 52°.
0Deer Park, Tuesday, 3 November
Overcast. High 69°, low 58°.
0.33Deer Park, Wednesday, 4 November
Rain. High 66°, low 60°.
0.81Deer Park, Thursday, 5 November
Rain. High 59°, low 51°.
0
Deer Park, Friday, 6 November
Partly cloudy. High 62°, low 47°.
0Deer Park, Saturday, 7 November
Overcast. High 61°, low 50°.
0.04Deer Park, Sunday, 8 November
Light rain. High 58°, low 54°.
0Deer Park, Monday, 9 November
Overcast. High 61°, low 54°.
0Deer Park, Tuesday, 10 November
Overcast. High 63°, low 50°.
0
Deer Park, Wednesday, 11 November
Clear. High 53°, low 41°.
0Deer Park, Thursday, 12 November
Overcast. High 52°, low 38°.
0.16Deer Park, Friday, 13 November
Rain. High 53°, low 44°.
0.03Deer Park, Saturday, 14 November
Light rain. High 52°, low 41°.
0Deer Park, Sunday, 15 November
Overcast. High 59°, low 47°.
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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