Weather in Williams Park, IL
Williams Park, Tuesday, 20 October, 11:04
Clear. Feels like 61°. High 66°, low 42°.
Monthly outlook for Williams Park, IL: average high 57°, average low 40.6°. That is 1.2° above the climate normal for October. Precipitation is expected on 2 days (about 0.8 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 21 October (71.5°), the coolest 28 October (28.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 60.6° | 56° | +2.6° |
| 30 October – 8 November | 51° | 51.9° | -0.5° |
| 9 November – 18 November | at normal | 46.4° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Round Lake Beach (10 mi).
0Williams Park, Wednesday, 21 October
Clear. High 72°, low 43°.
0
Williams Park, Thursday, 22 October
Mostly clear. High 67°, low 47°.
0Williams Park, Friday, 23 October
Clear. High 64°, low 48°.
0Williams Park, Saturday, 24 October
Clear. High 66°, low 48°.
0
Williams Park, Sunday, 25 October
Overcast. High 68°, low 53°.
0.3
Williams Park, Monday, 26 October
Rain. High 66°, low 38°.
0.03
Williams Park, Tuesday, 27 October
Light snow. High 45°, low 34°.
0Williams Park, Wednesday, 28 October
Clear. High 45°, low 28°.
0Williams Park, Thursday, 29 October
Clear. High 47°, low 36°.
0Williams Park, Friday, 30 October
Clear. High 42°, low 31°.
0
Williams Park, Saturday, 31 October
Partly cloudy. High 47°, low 29°.
0Williams Park, Sunday, 1 November
Light rain. High 49°, low 41°.
0Williams Park, Monday, 2 November
Clear. High 57°, low 38°.
0Williams Park, Tuesday, 3 November
Overcast. High 58°, low 45°.
0.44Williams Park, Wednesday, 4 November
Rain. High 53°, low 50°.
0.12Williams Park, Thursday, 5 November
Climate normal for this date — 60-year average.
0.09Williams Park, Friday, 6 November
Climate normal for this date — 60-year average.
0.05Williams Park, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Williams Park, Sunday, 8 November
Climate normal for this date — 60-year average.
0.11
Williams Park, Monday, 9 November
Climate normal for this date — 60-year average.
0.11Williams Park, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.08Williams Park, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Williams Park, Thursday, 12 November
Climate normal for this date — 60-year average.
0.05Williams Park, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Williams Park, Saturday, 14 November
Climate normal for this date — 60-year average.
0.08Williams Park, Sunday, 15 November
Climate normal for this date — 60-year average.
0.05Williams Park, Monday, 16 November
Climate normal for this date — 60-year average.
0.1Williams Park, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.1Williams Park, Wednesday, 18 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 Williams 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 Williams 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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