Weather in Mount Vernon, PA
Mount Vernon, Wednesday, 21 October, 06:06
Clear. Feels like 42°. High 64°, low 43°.
Monthly outlook for Mount Vernon, PA: average high 60.9°, average low 45°. That is 0.8° above the climate normal for October. Precipitation is expected on 3 days (about 0.9 inches), against a normal of 4 days and 1.9 inches. The warmest day looks like 27 October (67°), the coolest 31 October (33.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 21 October – 30 October | 62° | 60.1° | +1.1° |
| 31 October – 9 November | 59.2° | 57.3° | +1.1° |
| 10 November – 19 November | at normal | 52.1° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Lincoln University (5 mi).
0
Mount Vernon, Thursday, 22 October
Clear. High 66°, low 38°.
0Mount Vernon, Friday, 23 October
Clear. High 57°, low 44°.
0
Mount Vernon, Saturday, 24 October
Mostly clear. High 57°, low 38°.
0Mount Vernon, Sunday, 25 October
Clear. High 61°, low 40°.
0Mount Vernon, Monday, 26 October
Clear. High 64°, low 43°.
0
Mount Vernon, Tuesday, 27 October
Overcast. High 67°, low 49°.
0Mount Vernon, Wednesday, 28 October
Overcast. High 64°, low 49°.
0.01
Mount Vernon, Thursday, 29 October
Light rain. High 66°, low 50°.
0
Mount Vernon, Friday, 30 October
Partly cloudy. High 53°, low 39°.
0Mount Vernon, Saturday, 31 October
Clear. High 49°, low 34°.
0Mount Vernon, Sunday, 1 November
Overcast. High 53°, low 35°.
0.28Mount Vernon, Monday, 2 November
Rain. High 61°, low 48°.
0.47Mount Vernon, Tuesday, 3 November
Rain. High 63°, low 56°.
0.13Mount Vernon, Wednesday, 4 November
Light rain. High 67°, low 59°.
0Mount Vernon, Thursday, 5 November
Overcast. High 63°, low 56°.
0.07Mount Vernon, Friday, 6 November
Climate normal for this date — 60-year average.
0.07Mount Vernon, Saturday, 7 November
Climate normal for this date — 60-year average.
0.13Mount 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.
0.16
Mount Vernon, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.13Mount Vernon, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.19Mount Vernon, Thursday, 12 November
Climate normal for this date — 60-year average.
0.12Mount Vernon, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Mount Vernon, Saturday, 14 November
Climate normal for this date — 60-year average.
0.1Mount Vernon, Sunday, 15 November
Climate normal for this date — 60-year average.
0.14Mount Vernon, Monday, 16 November
Climate normal for this date — 60-year average.
0.07Mount Vernon, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.06Mount Vernon, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.09Mount 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, PA 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, PA 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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