Weather in Mount Vernon, WI
Mount Vernon, Friday, 16 October, 23:16
Clear. Feels like 35°. High 52°, low 40°.
Monthly outlook for Mount Vernon, WI: average high 57.5°, average low 42.1°. That is 1.6° above the climate normal for October. Precipitation is expected on 3 days (about 0.9 inches), against a normal of 5 days and 1.3 inches. The warmest day looks like 24 October (69.3°), the coolest 17 October (30.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 16 October – 25 October | 61° | 55.8° | +2.9° |
| 26 October – 4 November | 51.7° | 51.6° | +0.1° |
| 5 November – 14 November | at normal | 45.7° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Mount Horeb (6 mi).
0
Mount Vernon, Saturday, 17 October
Clear. High 53°, low 31°.
0Mount Vernon, Sunday, 18 October
Clear. High 59°, low 40°.
0
Mount Vernon, Monday, 19 October
Overcast. High 62°, low 42°.
0Mount Vernon, Tuesday, 20 October
Overcast. High 63°, low 41°.
0Mount Vernon, Wednesday, 21 October
Clear. High 66°, low 44°.
0.06
Mount Vernon, Thursday, 22 October
Light rain. High 62°, low 48°.
0
Mount Vernon, Friday, 23 October
Partly cloudy. High 69°, low 51°.
0Mount Vernon, Saturday, 24 October
Clear. High 69°, low 53°.
0Mount Vernon, Sunday, 25 October
Overcast. High 55°, low 42°.
0.02Mount Vernon, Monday, 26 October
Light rain. High 46°, low 40°.
0.02Mount Vernon, Tuesday, 27 October
Light rain. High 60°, low 43°.
0Mount Vernon, Wednesday, 28 October
Clear. High 52°, low 36°.
0.09Mount Vernon, Thursday, 29 October
Light rain. High 51°, low 39°.
0.65Mount Vernon, Friday, 30 October
Rain. High 49°, low 45°.
0Mount Vernon, Saturday, 31 October
Clear. High 53°, low 38°.
0.21
Mount Vernon, Sunday, 1 November
Climate normal for this date — 60-year average.
0.12Mount Vernon, Monday, 2 November
Climate normal for this date — 60-year average.
0.06Mount Vernon, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.09Mount Vernon, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.09Mount Vernon, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07Mount Vernon, Friday, 6 November
Climate normal for this date — 60-year average.
0.03
Mount Vernon, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Mount Vernon, Sunday, 8 November
Climate normal for this date — 60-year average.
0.1Mount Vernon, Monday, 9 November
Climate normal for this date — 60-year average.
0.11Mount Vernon, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.07Mount Vernon, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Mount Vernon, Thursday, 12 November
Climate normal for this date — 60-year average.
0.04Mount Vernon, Friday, 13 November
Climate normal for this date — 60-year average.
0.03Mount Vernon, Saturday, 14 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 Mount Vernon, 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 Mount Vernon, 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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