Weather in Island Beach, WI
Island Beach, Sunday, 9 August, 01:15
Clear. Feels like 65°. High 74°, low 64°.
Monthly outlook for Island Beach, WI: average high 74.7°, average low 61.4°. That is 1.2° below the climate normal for August. Precipitation is expected on 6 days (about 2.4 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 10 August (81.3°), the coolest 20 August (55.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 77.1° | 77.3° | -0.1° |
| 19 August – 28 August | 70.8° | 76.7° | -3.3° |
| 29 August – 7 September | at normal | 74.6° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Menasha (9 mi).
0
Island Beach, Monday, 10 August
Mostly clear. High 81°, low 68°.
1
Island Beach, Tuesday, 11 August
Heavy rain. High 77°, low 66°.
0.09Island Beach, Wednesday, 12 August
Light rain. High 79°, low 65°.
0
Island Beach, Thursday, 13 August
Overcast. High 73°, low 60°.
0
Island Beach, Friday, 14 August
Clear. High 78°, low 58°.
0.01Island Beach, Saturday, 15 August
Light rain. High 72°, low 61°.
0Island Beach, Sunday, 16 August
Overcast. High 75°, low 59°.
0.01Island Beach, Monday, 17 August
Light rain. High 81°, low 62°.
0.16Island Beach, Tuesday, 18 August
Light rain. High 80°, low 67°.
0.1Island Beach, Wednesday, 19 August
Light rain. High 69°, low 59°.
0Island Beach, Thursday, 20 August
Overcast. High 74°, low 56°.
0Island Beach, Friday, 21 August
Clear. High 73°, low 57°.
0.24Island Beach, Saturday, 22 August
Rain. High 62°, low 58°.
0.02Island Beach, Sunday, 23 August
Light rain. High 79°, low 62°.
0Island Beach, Monday, 24 August
Overcast. High 67°, low 60°.
0.11
Island Beach, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.16
Island Beach, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.2Island Beach, Thursday, 27 August
Climate normal for this date — 60-year average.
0.13Island Beach, Friday, 28 August
Climate normal for this date — 60-year average.
0.13Island Beach, Saturday, 29 August
Climate normal for this date — 60-year average.
0.1Island Beach, Sunday, 30 August
Climate normal for this date — 60-year average.
0.03Island Beach, Monday, 31 August
Climate normal for this date — 60-year average.
0.1Island Beach, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.09Island Beach, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.09Island Beach, Thursday, 3 September
Climate normal for this date — 60-year average.
0.05Island Beach, Friday, 4 September
Climate normal for this date — 60-year average.
0.08Island Beach, Saturday, 5 September
Climate normal for this date — 60-year average.
0.07Island Beach, Sunday, 6 September
Climate normal for this date — 60-year average.
0.12Island Beach, 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 Island Beach, 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 Island Beach, 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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