Weather in Williamsville, IL
Williamsville, Tuesday, 27 October, 06:36
Clear. Feels like 51°. High 73°, low 51°.
Monthly outlook for Williamsville, IL: average high 62.8°, average low 50.4°. That is 3.3° above the climate normal for October. Precipitation is expected on 3 days (about 0.8 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 28 October (76.9°), the coolest 7 November (37°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 27 October – 5 November | 66° | 58.2° | +4.3° |
| 6 November – 15 November | 57.5° | 52.9° | +2.5° |
| 16 November – 25 November | at normal | 49.4° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Broadwell (10 mi).
0
Williamsville, Wednesday, 28 October
Overcast. High 77°, low 53°.
0
Williamsville, Thursday, 29 October
Clear. High 75°, low 58°.
0Williamsville, Friday, 30 October
Overcast. High 71°, low 50°.
0Williamsville, Saturday, 31 October
Overcast. High 71°, low 60°.
0.02
Williamsville, Sunday, 1 November
Light rain. High 72°, low 57°.
0Williamsville, Monday, 2 November
Overcast. High 56°, low 52°.
0Williamsville, Tuesday, 3 November
Overcast. High 56°, low 54°.
0.56Williamsville, Wednesday, 4 November
Rain. High 54°, low 51°.
0.16Williamsville, Thursday, 5 November
Light rain. High 56°, low 47°.
0Williamsville, Friday, 6 November
Overcast. High 52°, low 41°.
0Williamsville, Saturday, 7 November
Overcast. High 50°, low 37°.
0Williamsville, Sunday, 8 November
Overcast. High 59°, low 42°.
0.04Williamsville, Monday, 9 November
Light rain. High 63°, low 47°.
0.03Williamsville, Tuesday, 10 November
Light rain. High 63°, low 56°.
0Williamsville, Wednesday, 11 November
Light rain. High 57°, low 50°.
0.07
Williamsville, Thursday, 12 November
Climate normal for this date — 60-year average.
0.07
Williamsville, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Williamsville, Saturday, 14 November
Climate normal for this date — 60-year average.
0.09Williamsville, Sunday, 15 November
Climate normal for this date — 60-year average.
0.08Williamsville, Monday, 16 November
Climate normal for this date — 60-year average.
0.12Williamsville, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.18Williamsville, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.08Williamsville, Thursday, 19 November
Climate normal for this date — 60-year average.
0.11
Williamsville, Friday, 20 November
Climate normal for this date — 60-year average.
0.09Williamsville, Saturday, 21 November
Climate normal for this date — 60-year average.
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.
0.1Williamsville, Wednesday, 25 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 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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