Weather in Mount Vernon, WI
Mount Vernon, Monday, 19 October, 20:05
Overcast. Feels like 51°. High 66°, low 40°.
Monthly outlook for Mount Vernon, WI: average high 56.1°, average low 38.4°. That is 1.5° above the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 20 October (66.5°), the coolest 28 October (23°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 19 October – 28 October | 58.7° | 54.7° | +2.2° |
| 29 October – 7 November | 51.9° | 50.2° | +0.9° |
| 8 November – 17 November | at normal | 44.4° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Mount Horeb (6 mi).
0
Mount Vernon, Tuesday, 20 October
Clear. High 67°, low 41°.
0Mount Vernon, Wednesday, 21 October
Clear. High 66°, low 41°.
0
Mount Vernon, Thursday, 22 October
Mostly clear. High 65°, low 47°.
0Mount Vernon, Friday, 23 October
Mostly clear. High 61°, low 46°.
0Mount Vernon, Saturday, 24 October
Overcast. High 61°, low 46°.
0Mount Vernon, Sunday, 25 October
Overcast. High 61°, low 49°.
0Mount Vernon, Monday, 26 October
Clear. High 52°, low 41°.
0Mount Vernon, Tuesday, 27 October
Overcast. High 46°, low 31°.
0Mount Vernon, Wednesday, 28 October
Clear. High 41°, low 23°.
0Mount Vernon, Thursday, 29 October
Clear. High 47°, low 25°.
0Mount Vernon, Friday, 30 October
Overcast. High 51°, low 29°.
0Mount Vernon, Saturday, 31 October
Overcast. High 58°, low 40°.
0Mount Vernon, Sunday, 1 November
Overcast. High 57°, low 47°.
0.06
Mount Vernon, Monday, 2 November
Light rain. High 49°, low 36°.
0
Mount Vernon, Tuesday, 3 November
Partly cloudy. High 50°, low 31°.
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.
0.03Mount 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.
0.1
Mount 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.
0.06Mount Vernon, Sunday, 15 November
Climate normal for this date — 60-year average.
0.05Mount Vernon, Monday, 16 November
Climate normal for this date — 60-year average.
0.09Mount Vernon, Tuesday, 17 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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