Weather in Oconomowoc Lake, WI
Oconomowoc Lake, Sunday, 9 August, 07:05
Partly cloudy. Feels like 64°. High 77°, low 62°.
Monthly outlook for Oconomowoc Lake, WI: average high 78.9°, average low 63°. That is 0.3° above the climate normal for August. Precipitation is expected on 3 days (about 2.8 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 20 August (91.8°), the coolest 14 August (54.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 76.1° | 78.5° | -1.3° |
| 19 August – 28 August | 83.5° | 78.4° | +2.8° |
| 29 August – 7 September | at normal | 76.5° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — North Prairie (11 mi).
0.03
Oconomowoc Lake, Monday, 10 August
Light rain. High 86°, low 69°.
1.3Oconomowoc Lake, Tuesday, 11 August
Heavy rain. High 79°, low 64°.
0
Oconomowoc Lake, Wednesday, 12 August
Overcast. High 79°, low 65°.
0Oconomowoc Lake, Thursday, 13 August
Overcast. High 71°, low 58°.
0Oconomowoc Lake, Friday, 14 August
Partly cloudy. High 72°, low 54°.
0.01Oconomowoc Lake, Saturday, 15 August
Light rain. High 73°, low 55°.
0Oconomowoc Lake, Sunday, 16 August
Overcast. High 71°, low 62°.
0.03Oconomowoc Lake, Monday, 17 August
Light rain. High 78°, low 61°.
0Oconomowoc Lake, Tuesday, 18 August
Overcast. High 76°, low 58°.
0.39Oconomowoc Lake, Wednesday, 19 August
Rain. High 84°, low 66°.
0Oconomowoc Lake, Thursday, 20 August
Overcast. High 92°, low 73°.
0.01Oconomowoc Lake, Friday, 21 August
Light rain. High 84°, low 66°.
0.04Oconomowoc Lake, Saturday, 22 August
Light rain. High 89°, low 64°.
0.01Oconomowoc Lake, Sunday, 23 August
Light rain. High 80°, low 65°.
0Oconomowoc Lake, Monday, 24 August
Light rain. High 73°, low 65°.
0.12Oconomowoc Lake, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.15
Oconomowoc Lake, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.11Oconomowoc Lake, Thursday, 27 August
Climate normal for this date — 60-year average.
0.13Oconomowoc Lake, Friday, 28 August
Climate normal for this date — 60-year average.
0.11Oconomowoc Lake, Saturday, 29 August
Climate normal for this date — 60-year average.
0.07Oconomowoc Lake, Sunday, 30 August
Climate normal for this date — 60-year average.
0.03
Oconomowoc Lake, Monday, 31 August
Climate normal for this date — 60-year average.
0.08Oconomowoc Lake, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.06Oconomowoc Lake, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.09Oconomowoc Lake, Thursday, 3 September
Climate normal for this date — 60-year average.
0.07Oconomowoc Lake, Friday, 4 September
Climate normal for this date — 60-year average.
0.07Oconomowoc Lake, Saturday, 5 September
Climate normal for this date — 60-year average.
0.07Oconomowoc Lake, Sunday, 6 September
Climate normal for this date — 60-year average.
0.11Oconomowoc 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 Oconomowoc 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 Oconomowoc 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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