Weather in Williams Bay, WI
Williams Bay, Sunday, 9 August, 03:10
Clear. Feels like 59°. High 79°, low 59°.
Monthly outlook for Williams Bay, WI: average high 80.9°, average low 63.3°. That is 1.3° above the climate normal for August. Precipitation is expected on 6 days (about 1.4 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 20 August (94.7°), the coolest 14 August (55°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 77.8° | 78.7° | -0.5° |
| 19 August – 28 August | 86.2° | 78.8° | +4.1° |
| 29 August – 7 September | at normal | 77° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Darien (9 mi).
0.08
Williams Bay, Monday, 10 August
Light rain. High 86°, low 69°.
0.44Williams Bay, Tuesday, 11 August
Heavy rain. High 83°, low 65°.
0
Williams Bay, Wednesday, 12 August
Overcast. High 80°, low 67°.
0Williams Bay, Thursday, 13 August
Overcast. High 72°, low 60°.
0
Williams Bay, Friday, 14 August
Mostly clear. High 73°, low 55°.
0Williams Bay, Saturday, 15 August
Overcast. High 75°, low 55°.
0.04Williams Bay, Sunday, 16 August
Light rain. High 73°, low 62°.
0.01Williams Bay, Monday, 17 August
Light rain. High 80°, low 62°.
0Williams Bay, Tuesday, 18 August
Overcast. High 77°, low 59°.
0.18Williams Bay, Wednesday, 19 August
Light rain. High 85°, low 67°.
0Williams Bay, Thursday, 20 August
Overcast. High 95°, low 73°.
0Williams Bay, Friday, 21 August
Mostly clear. High 85°, low 67°.
0.02Williams Bay, Saturday, 22 August
Light rain. High 89°, low 64°.
0.01Williams Bay, Sunday, 23 August
Light rain. High 87°, low 65°.
0.04Williams Bay, Monday, 24 August
Light rain. High 76°, low 65°.
0.09
Williams Bay, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.15Williams Bay, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.1Williams Bay, Thursday, 27 August
Climate normal for this date — 60-year average.
0.13
Williams Bay, Friday, 28 August
Climate normal for this date — 60-year average.
0.12Williams Bay, Saturday, 29 August
Climate normal for this date — 60-year average.
0.07Williams Bay, Sunday, 30 August
Climate normal for this date — 60-year average.
0.06Williams Bay, Monday, 31 August
Climate normal for this date — 60-year average.
0.09Williams Bay, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.05Williams Bay, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.11Williams Bay, Thursday, 3 September
Climate normal for this date — 60-year average.
0.08Williams Bay, Friday, 4 September
Climate normal for this date — 60-year average.
0.08Williams Bay, Saturday, 5 September
Climate normal for this date — 60-year average.
0.09Williams Bay, Sunday, 6 September
Climate normal for this date — 60-year average.
0.1Williams Bay, Monday, 7 September
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 Bay, WI 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 Bay, WI 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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