Weather in Fontana-on-Geneva Lake, WI
Fontana-on-Geneva Lake, Sunday, 9 August, 14:54
Overcast. Feels like 76°. High 80°, low 62°.
Monthly outlook for Fontana-on-Geneva Lake, WI: average high 80°, average low 64°. That is 0.7° above the climate normal for August. Precipitation is expected on 9 days (about 2.4 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 15 August (87°), the coolest 22 August (56.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 80.1° | 78.7° | +0.7° |
| 19 August – 28 August | 79.8° | 78.8° | +0.6° |
| 29 August – 7 September | at normal | 77° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Darien (8 mi).
0.13
Fontana-on-Geneva Lake, Monday, 10 August
Rain. High 85°, low 71°.
0.2Fontana-on-Geneva Lake, Tuesday, 11 August
Heavy rain. High 83°, low 66°.
0Fontana-on-Geneva Lake, Wednesday, 12 August
Overcast. High 81°, low 64°.
0Fontana-on-Geneva Lake, Thursday, 13 August
Overcast. High 79°, low 63°.
0.06Fontana-on-Geneva Lake, Friday, 14 August
Light rain. High 75°, low 64°.
0.48Fontana-on-Geneva Lake, Saturday, 15 August
Rain. High 87°, low 67°.
0.02Fontana-on-Geneva Lake, Sunday, 16 August
Light rain. High 75°, low 66°.
0.34Fontana-on-Geneva Lake, Monday, 17 August
Light rain. High 72°, low 61°.
0.14Fontana-on-Geneva Lake, Tuesday, 18 August
Light rain. High 84°, low 68°.
0Fontana-on-Geneva Lake, Wednesday, 19 August
Overcast. High 83°, low 64°.
0.02Fontana-on-Geneva Lake, Thursday, 20 August
Light rain. High 84°, low 67°.
0.19Fontana-on-Geneva Lake, Friday, 21 August
Rain. High 72°, low 58°.
0
Fontana-on-Geneva Lake, Saturday, 22 August
Clear. High 78°, low 56°.
0Fontana-on-Geneva Lake, Sunday, 23 August
Overcast. High 79°, low 60°.
0.11Fontana-on-Geneva Lake, Monday, 24 August
Light rain. High 83°, low 66°.
0.09
Fontana-on-Geneva Lake, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.15Fontana-on-Geneva Lake, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.1Fontana-on-Geneva Lake, Thursday, 27 August
Climate normal for this date — 60-year average.
0.13
Fontana-on-Geneva Lake, Friday, 28 August
Climate normal for this date — 60-year average.
0.12Fontana-on-Geneva Lake, Saturday, 29 August
Climate normal for this date — 60-year average.
0.07Fontana-on-Geneva Lake, Sunday, 30 August
Climate normal for this date — 60-year average.
0.06Fontana-on-Geneva Lake, Monday, 31 August
Climate normal for this date — 60-year average.
0.09Fontana-on-Geneva Lake, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.05Fontana-on-Geneva Lake, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.11Fontana-on-Geneva Lake, Thursday, 3 September
Climate normal for this date — 60-year average.
0.08Fontana-on-Geneva Lake, Friday, 4 September
Climate normal for this date — 60-year average.
0.08Fontana-on-Geneva Lake, Saturday, 5 September
Climate normal for this date — 60-year average.
0.09Fontana-on-Geneva Lake, Sunday, 6 September
Climate normal for this date — 60-year average.
0.1Fontana-on-Geneva Lake, 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 Fontana-on-Geneva Lake, 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 Fontana-on-Geneva Lake, 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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