Weather in Mount Vernon, IL
Mount Vernon, Sunday, 1 November, 00:17
Light rain. Feels like 60°. High 66°, low 59°.
0.02Mount Vernon, Monday, 2 November
Light rain. High 68°, low 58°.
0.26Mount Vernon, Tuesday, 3 November
Rain. High 74°, low 65°.
0.48Mount Vernon, Wednesday, 4 November
Rain. High 66°, low 58°.
0
Mount Vernon, Thursday, 5 November
Clear. High 64°, low 51°.
0
Mount Vernon, Friday, 6 November
Overcast. High 56°, low 52°.
0Mount Vernon, Saturday, 7 November
Overcast. High 62°, low 47°.
0Mount Vernon, Sunday, 8 November
Clear. High 56°, low 45°.
0Mount Vernon, Monday, 9 November
Clear. High 56°, low 38°.
0Mount Vernon, Tuesday, 10 November
Overcast. High 61°, low 41°.
0Mount Vernon, Wednesday, 11 November
Clear. High 57°, low 38°.
0.08Mount Vernon, Thursday, 12 November
Light rain. High 52°, low 46°.
0.05Mount Vernon, Friday, 13 November
Light rain. High 61°, low 49°.
0
Mount Vernon, Saturday, 14 November
Mostly clear. High 59°, low 44°.
0Mount Vernon, Sunday, 15 November
Clear. High 57°, low 38°.
0Mount Vernon, Monday, 16 November
Overcast. High 57°, low 40°.
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, IL 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, IL 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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