Weather in Deer Park, IL
Deer Park, Monday, 26 October, 06:03
Overcast. Feels like 53°. High 65°, low 50°.
Monthly outlook for Deer Park, IL: average high 62°, average low 51.3°. That is 5.6° above the climate normal for October. Precipitation is expected on 7 days (about 5.6 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 27 October (68.5°), the coolest 4 November (46.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 26 October – 4 November | 62.5° | 53.1° | +5.3° |
| 5 November – 14 November | 61° | 48.2° | +7.1° |
| 15 November – 24 November | at normal | 44.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Highwood (14 mi).
0.05
Deer Park, Tuesday, 27 October
Light rain. High 68°, low 51°.
0Deer Park, Wednesday, 28 October
Overcast. High 68°, low 53°.
0.06Deer Park, Thursday, 29 October
Light rain. High 68°, low 56°.
0.32Deer Park, Friday, 30 October
Rain. High 64°, low 47°.
0.31Deer Park, Saturday, 31 October
Rain. High 63°, low 53°.
0.18Deer Park, Sunday, 1 November
Light rain. High 59°, low 55°.
0Deer Park, Monday, 2 November
Overcast. High 60°, low 53°.
4.06Deer Park, Tuesday, 3 November
Heavy rain. High 59°, low 54°.
0.6Deer Park, Wednesday, 4 November
Rain. High 52°, low 47°.
0.01Deer Park, Thursday, 5 November
Light rain. High 55°, low 49°.
0
Deer Park, Friday, 6 November
Mostly clear. High 61°, low 47°.
0Deer Park, Saturday, 7 November
Overcast. High 63°, low 51°.
0Deer Park, Sunday, 8 November
Overcast. High 52°, low 48°.
0
Deer Park, Monday, 9 November
Clear. High 68°, low 51°.
0Deer Park, Tuesday, 10 November
Overcast. High 68°, low 56°.
0.08
Deer Park, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06
Deer Park, Thursday, 12 November
Climate normal for this date — 60-year average.
0.05Deer Park, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Deer Park, Saturday, 14 November
Climate normal for this date — 60-year average.
0.09Deer Park, Sunday, 15 November
Climate normal for this date — 60-year average.
0.05Deer 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.
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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