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As of 05:25 CDT

Weather in Mount Vernon, IL

57°Current weather

Mount Vernon, Saturday, 31 October, 05:25

Clear. Feels like 55°. High 71°, low 57°.

Pressure30.27 inHg
Wind5.7 mph NE
Humidity61%
Visibility6.2 mi
Dew point43°
Sun, 0167° / 56°0.05Light rain
67 °Light rain

Mount Vernon, Sunday, 1 November

Light rain. High 67°, low 56°.

Pressure30.30 inHg
Wind11.2 mph SE
Humidity66%
Visibility6.2 mi
Dew point52°
Mon, 0268° / 56°0.02Light rain
68 °Light rain

Mount Vernon, Monday, 2 November

Light rain. High 68°, low 56°.

Pressure30.12 inHg
Wind10.3 mph SE
Humidity79%
Visibility6.2 mi
Dew point56°
Tue, 0370° / 63°0.01Light rain
70 °Light rain

Mount Vernon, Tuesday, 3 November

Light rain. High 70°, low 63°.

Pressure30.00 inHg
Wind14 mph S
Humidity74%
Visibility6.2 mi
Dew point60°
Wed, 0469° / 64°1.54Heavy rain
69 °Heavy rain

Mount Vernon, Wednesday, 4 November

Heavy rain. High 69°, low 64°.

Pressure29.77 inHg
Wind11.4 mph SE
Humidity96%
Visibility—
Dew point65°
Thu, 0568° / 57°0.47Rain
68 °Rain

Mount Vernon, Thursday, 5 November

Rain. High 68°, low 57°.

Pressure29.59 inHg
Wind8.4 mph NW
Humidity81%
Visibility—
Dew point61°
Fri, 0666° / 53°0Overcast
66 °Overcast

Mount Vernon, Friday, 6 November

Overcast. High 66°, low 53°.

Pressure29.94 inHg
Wind7.2 mph NE
Humidity69%
Visibility—
Dew point54°
Sat, 0769° / 62°0.04Light rain
69 °Light rain

Mount Vernon, Saturday, 7 November

Light rain. High 69°, low 62°.

Pressure29.94 inHg
Wind8 mph S
Humidity75%
Visibility—
Dew point60°
Sun, 0872° / 61°0.4Light rain
72 °Light rain

Mount Vernon, Sunday, 8 November

Light rain. High 72°, low 61°.

Pressure29.91 inHg
Wind10.6 mph NE
Humidity67%
Visibility—
Dew point59°
Mon, 0966° / 55°0.95Rain
66 °Rain

Mount Vernon, Monday, 9 November

Rain. High 66°, low 55°.

Pressure29.88 inHg
Wind10.9 mph S
Humidity76%
Visibility—
Dew point57°
Tue, 1065° / 51°0Light rain
65 °Light rain

Mount Vernon, Tuesday, 10 November

Light rain. High 65°, low 51°.

Pressure29.91 inHg
Wind10.9 mph NW
Humidity59%
Visibility—
Dew point47°
Wed, 1160° / 45°0Clear
60 °Clear

Mount Vernon, Wednesday, 11 November

Clear. High 60°, low 45°.

Pressure30.12 inHg
Wind11.7 mph NW
Humidity40%
Visibility—
Dew point33°
Thu, 1263° / 45°0Overcast
63 °Overcast

Mount Vernon, Thursday, 12 November

Overcast. High 63°, low 45°.

Pressure30.00 inHg
Wind6.6 mph S
Humidity46%
Visibility—
Dew point38°
Fri, 1367° / 51°0Overcast
67 °Overcast

Mount Vernon, Friday, 13 November

Overcast. High 67°, low 51°.

Pressure29.97 inHg
Wind11.1 mph S
Humidity55%
Visibility—
Dew point47°
Sat, 1462° / 48°0Clear
62 °Clear

Mount Vernon, Saturday, 14 November

Clear. High 62°, low 48°.

Pressure30.12 inHg
Wind11.2 mph NW
Humidity54%
Visibility—
Dew point42°
Sun, 1569° / 48°0Overcast
69 °Overcast

Mount Vernon, Sunday, 15 November

Overcast. High 69°, low 48°.

Pressure30.12 inHg
Wind12.7 mph SW
Humidity45%
Visibility—
Dew point42°

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.