Weather in Westchester, IL
Westchester, Monday, 9 November, 06:42
Mostly clear. Feels like 37°. High 59°, low 39°.
Monthly outlook for Westchester, IL: average high 53°, average low 42.7°. That is 3.3° above the climate normal for November. Precipitation is expected on 6 days (about 1.2 inches), against a normal of 5 days and 1.4 inches. The warmest day looks like 19 November (65.1°), the coolest 14 November (30.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 November – 18 November | 53° | 48.2° | +2.7° |
| 19 November – 28 November | 52.9° | 44.1° | +4.9° |
| 29 November – 8 December | at normal | 38.8° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — La Grange Park (2 mi).
0
Westchester, Tuesday, 10 November
Clear. High 61°, low 44°.
0.15
Westchester, Wednesday, 11 November
Light rain. High 57°, low 42°.
0.04Westchester, Thursday, 12 November
Light rain. High 46°, low 37°.
0.04Westchester, Friday, 13 November
Light rain. High 41°, low 34°.
0
Westchester, Saturday, 14 November
Overcast. High 43°, low 31°.
0Westchester, Sunday, 15 November
Mostly clear. High 48°, low 36°.
0Westchester, Monday, 16 November
Overcast. High 55°, low 47°.
0
Westchester, Tuesday, 17 November
Partly cloudy. High 61°, low 45°.
0Westchester, Wednesday, 18 November
Overcast. High 58°, low 52°.
0Westchester, Thursday, 19 November
Overcast. High 65°, low 53°.
0.31Westchester, Friday, 20 November
Rain. High 61°, low 52°.
0Westchester, Saturday, 21 November
Overcast. High 50°, low 46°.
0.21Westchester, Sunday, 22 November
Rain. High 48°, low 46°.
0.43Westchester, Monday, 23 November
Rain. High 48°, low 40°.
0Westchester, Tuesday, 24 November
Overcast. High 46°, low 40°.
0.09
Westchester, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.13Westchester, Thursday, 26 November
Climate normal for this date — 60-year average.
0.22Westchester, Friday, 27 November
Climate normal for this date — 60-year average.
0.13Westchester, Saturday, 28 November
Climate normal for this date — 60-year average.
0.08Westchester, Sunday, 29 November
Climate normal for this date — 60-year average.
0.09Westchester, Monday, 30 November
Climate normal for this date — 60-year average.
0.16Westchester, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.07Westchester, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.09Westchester, Thursday, 3 December
Climate normal for this date — 60-year average.
0.07Westchester, Friday, 4 December
Climate normal for this date — 60-year average.
0.09Westchester, Saturday, 5 December
Climate normal for this date — 60-year average.
0.06Westchester, Sunday, 6 December
Climate normal for this date — 60-year average.
0.13Westchester, Monday, 7 December
Climate normal for this date — 60-year average.
0.08Westchester, Tuesday, 8 December
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 Westchester, 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 Westchester, 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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