Weather in Mount Vernon, MO
Mount Vernon, Sunday, 18 October, 03:52
Clear. Feels like 38°. High 66°, low 42°.
Monthly outlook for Mount Vernon, MO: average high 72.8°, average low 54.7°. That is 4.7° above the climate normal for October. Precipitation is expected on 2 days (about 0.1 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 1 November (84.5°), the coolest 18 October (42.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 18 October – 27 October | 70.6° | 65.5° | +2.8° |
| 28 October – 6 November | 76.3° | 61° | +8.5° |
| 7 November – 16 November | at normal | 57.2° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Miller (8 mi).
0
Mount Vernon, Monday, 19 October
Mostly clear. High 68°, low 43°.
0
Mount Vernon, Tuesday, 20 October
Overcast. High 68°, low 51°.
0
Mount Vernon, Wednesday, 21 October
Partly cloudy. High 71°, low 52°.
0Mount Vernon, Thursday, 22 October
Mostly clear. High 73°, low 52°.
0
Mount Vernon, Friday, 23 October
Clear. High 73°, low 55°.
0Mount Vernon, Saturday, 24 October
Overcast. High 80°, low 60°.
0Mount Vernon, Sunday, 25 October
Overcast. High 65°, low 53°.
0Mount Vernon, Monday, 26 October
Overcast. High 73°, low 52°.
0Mount Vernon, Tuesday, 27 October
Overcast. High 69°, low 58°.
0Mount Vernon, Wednesday, 28 October
Overcast. High 71°, low 59°.
0Mount Vernon, Thursday, 29 October
Overcast. High 69°, low 57°.
0.06
Mount Vernon, Friday, 30 October
Light rain. High 79°, low 54°.
0.01Mount Vernon, Saturday, 31 October
Light rain. High 78°, low 61°.
0Mount Vernon, Sunday, 1 November
Clear. High 85°, low 63°.
0.07Mount Vernon, Monday, 2 November
Light rain. High 77°, low 63°.
0.11Mount Vernon, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.19
Mount Vernon, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.11Mount Vernon, Thursday, 5 November
Climate normal for this date — 60-year average.
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.
0.15Mount 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.
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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