Weather in Deer Park, IL
Deer Park, Friday, 23 October, 15:24
Clear. Feels like 70°. High 71°, low 46°.
Monthly outlook for Deer Park, IL: average high 63°, average low 50.3°. That is 5.5° above the climate normal for October. Precipitation is expected on 5 days (about 1.1 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 23 October (71°), the coolest 30 October (41.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 23 October – 1 November | 62.7° | 54.4° | +4.6° |
| 2 November – 11 November | 63.4° | 50° | +7.5° |
| 12 November – 21 November | at normal | 45.3° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Highwood (14 mi).
0
Deer Park, Saturday, 24 October
Overcast. High 68°, low 47°.
0Deer Park, Sunday, 25 October
Overcast. High 69°, low 47°.
0Deer Park, Monday, 26 October
Overcast. High 62°, low 50°.
0Deer Park, Tuesday, 27 October
Overcast. High 61°, low 50°.
0.02
Deer Park, Wednesday, 28 October
Light rain. High 65°, low 54°.
0.06Deer Park, Thursday, 29 October
Light rain. High 65°, low 46°.
0.01Deer Park, Friday, 30 October
Light rain. High 50°, low 41°.
0.17Deer Park, Saturday, 31 October
Light rain. High 56°, low 46°.
0Deer Park, Sunday, 1 November
Overcast. High 62°, low 52°.
0.03Deer Park, Monday, 2 November
Light rain. High 63°, low 51°.
0.45Deer Park, Tuesday, 3 November
Light rain. High 58°, low 56°.
0.04Deer Park, Wednesday, 4 November
Light rain. High 63°, low 58°.
0.26Deer Park, Thursday, 5 November
Rain. High 66°, low 55°.
0.04Deer Park, Friday, 6 November
Light rain. High 63°, low 54°.
0Deer Park, Saturday, 7 November
Clear. High 67°, low 52°.
0.06
Deer Park, Sunday, 8 November
Climate normal for this date — 60-year average.
0.12
Deer Park, Monday, 9 November
Climate normal for this date — 60-year average.
0.11Deer Park, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.08Deer 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.
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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