Weather in Mount Vernon, MO
Mount Vernon, Wednesday, 21 October, 07:40
Overcast. Feels like 52°. High 74°, low 52°.
Monthly outlook for Mount Vernon, MO: average high 67.4°, average low 51.2°. That is 2.5° above the climate normal for October. Precipitation is expected on 4 days (about 5.9 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 22 October (77°), the coolest 29 October (39.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 21 October – 30 October | 69.7° | 64.5° | +2.9° |
| 31 October – 9 November | 63.6° | 60° | +2° |
| 10 November – 19 November | at normal | 56.2° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Miller (8 mi).
0
Mount Vernon, Thursday, 22 October
Clear. High 77°, low 48°.
0
Mount Vernon, Friday, 23 October
Mostly clear. High 76°, low 56°.
0Mount Vernon, Saturday, 24 October
Overcast. High 76°, low 56°.
0Mount Vernon, Sunday, 25 October
Overcast. High 77°, low 59°.
0Mount Vernon, Monday, 26 October
Overcast. High 74°, low 56°.
0.02
Mount Vernon, Tuesday, 27 October
Light rain. High 60°, low 51°.
0.02Mount Vernon, Wednesday, 28 October
Light rain. High 71°, low 47°.
0Mount Vernon, Thursday, 29 October
Overcast. High 57°, low 39°.
0Mount Vernon, Friday, 30 October
Overcast. High 56°, low 41°.
1.34Mount Vernon, Saturday, 31 October
Rain. High 51°, low 43°.
0.73Mount Vernon, Sunday, 1 November
Rain. High 62°, low 51°.
0.01Mount Vernon, Monday, 2 November
Light rain. High 66°, low 49°.
2.66Mount Vernon, Tuesday, 3 November
Heavy rain. High 66°, low 55°.
1.11Mount Vernon, Wednesday, 4 November
Heavy rain. High 67°, low 61°.
0
Mount Vernon, Thursday, 5 November
Partly cloudy. High 69°, low 55°.
0.1Mount Vernon, Friday, 6 November
Climate normal for this date — 60-year average.
0.06Mount Vernon, Saturday, 7 November
Climate normal for this date — 60-year average.
0.09Mount Vernon, Sunday, 8 November
Climate normal for this date — 60-year average.
0.09Mount Vernon, Monday, 9 November
Climate normal for this date — 60-year average.
0.1Mount Vernon, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.1Mount Vernon, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.08Mount Vernon, Thursday, 12 November
Climate normal for this date — 60-year average.
0.06Mount Vernon, Friday, 13 November
Climate normal for this date — 60-year average.
0.08Mount Vernon, Saturday, 14 November
Climate normal for this date — 60-year average.
0.15
Mount Vernon, Sunday, 15 November
Climate normal for this date — 60-year average.
0.1Mount Vernon, Monday, 16 November
Climate normal for this date — 60-year average.
0.11Mount Vernon, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.12Mount Vernon, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.1Mount Vernon, Thursday, 19 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, MO 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, MO 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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