Weather in Williamsville, IL
Williamsville, Friday, 6 November, 09:09
Overcast. Feels like 38°. High 49°, low 35°.
Monthly outlook for Williamsville, IL: average high 58.2°, average low 43.1°. That is 3.4° above the climate normal for November. Precipitation is expected on 2 days (about 0.2 inches), against a normal of 4 days and 1.5 inches. The warmest day looks like 20 November (68.1°), the coolest 7 November (31.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 6 November – 15 November | 56° | 52.9° | +1.7° |
| 16 November – 25 November | 61.9° | 49.4° | +6.9° |
| 26 November – 5 December | at normal | 44° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Broadwell (10 mi).
0Williamsville, Saturday, 7 November
Overcast. High 51°, low 32°.
0
Williamsville, Sunday, 8 November
Clear. High 62°, low 39°.
0Williamsville, Monday, 9 November
Clear. High 63°, low 38°.
0Williamsville, Tuesday, 10 November
Clear. High 64°, low 48°.
0
Williamsville, Wednesday, 11 November
Partly cloudy. High 63°, low 42°.
0Williamsville, Thursday, 12 November
Overcast. High 50°, low 37°.
0Williamsville, Friday, 13 November
Overcast. High 44°, low 32°.
0Williamsville, Saturday, 14 November
Clear. High 51°, low 33°.
0
Williamsville, Sunday, 15 November
Mostly clear. High 62°, low 38°.
0Williamsville, Monday, 16 November
Overcast. High 64°, low 44°.
0.04
Williamsville, Tuesday, 17 November
Light rain. High 55°, low 50°.
0Williamsville, Wednesday, 18 November
Overcast. High 61°, low 53°.
0.03Williamsville, Thursday, 19 November
Light rain. High 60°, low 56°.
0Williamsville, Friday, 20 November
Overcast. High 68°, low 55°.
0.14Williamsville, Saturday, 21 November
Light rain. High 63°, low 59°.
0.07Williamsville, Sunday, 22 November
Climate normal for this date — 60-year average.
0.08Williamsville, Monday, 23 November
Climate normal for this date — 60-year average.
0.11Williamsville, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.1
Williamsville, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.14Williamsville, Thursday, 26 November
Climate normal for this date — 60-year average.
0.21Williamsville, Friday, 27 November
Climate normal for this date — 60-year average.
0.12Williamsville, Saturday, 28 November
Climate normal for this date — 60-year average.
0.07Williamsville, Sunday, 29 November
Climate normal for this date — 60-year average.
0.13Williamsville, Monday, 30 November
Climate normal for this date — 60-year average.
0.13Williamsville, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.07Williamsville, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.09Williamsville, Thursday, 3 December
Climate normal for this date — 60-year average.
0.07Williamsville, Friday, 4 December
Climate normal for this date — 60-year average.
0.07Williamsville, Saturday, 5 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 Williamsville, 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 Williamsville, 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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