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As of 18:35 CDT

Weather in Mount Vernon, IL

70°Current weather

Mount Vernon, Thursday, 29 October, 18:35

Clear. Feels like 69°. High 80°, low 54°.

Pressure30.15 inHg
Wind3.4 mph S
Humidity60%
Visibility6.2 mi
Dew point55°
Fri, 3078° / 53°0.01Light rain
78 °Light rain

Mount Vernon, Friday, 30 October

Light rain. High 78°, low 53°.

Pressure30.27 inHg
Wind6.2 mph SE
Humidity59%
Visibility6.2 mi
Dew point57°
Sat, 3168° / 54°0Overcast
68 °Overcast

Mount Vernon, Saturday, 31 October

Overcast. High 68°, low 54°.

Pressure30.27 inHg
Wind4.9 mph E
Humidity53%
Visibility6.2 mi
Dew point50°
Sun, 0166° / 57°0.31Rain
66 °Rain

Mount Vernon, Sunday, 1 November

Rain. High 66°, low 57°.

Pressure30.30 inHg
Wind9.8 mph SE
Humidity79%
Visibility6.2 mi
Dew point58°
Mon, 0269° / 57°0.02Light rain
69 °Light rain

Mount Vernon, Monday, 2 November

Light rain. High 69°, low 57°.

Pressure30.12 inHg
Wind9.7 mph S
Humidity83%
Visibility6.2 mi
Dew point59°
Tue, 0375° / 64°0Overcast
75 °Overcast

Mount Vernon, Tuesday, 3 November

Overcast. High 75°, low 64°.

Pressure29.88 inHg
Wind19.7 mph S
Humidity61%
Visibility—
Dew point59°
Wed, 0466° / 61°0.64Rain
66 °Rain

Mount Vernon, Wednesday, 4 November

Rain. High 66°, low 61°.

Pressure29.74 inHg
Wind13.5 mph S
Humidity91%
Visibility—
Dew point60°
Thu, 0564° / 52°0.23Rain
64 °Rain

Mount Vernon, Thursday, 5 November

Rain. High 64°, low 52°.

Pressure29.71 inHg
Wind16.7 mph NW
Humidity52%
Visibility—
Dew point44°
Fri, 0658° / 44°0Partly cloudy
58 °Partly cloudy

Mount Vernon, Friday, 6 November

Partly cloudy. High 58°, low 44°.

Pressure30.06 inHg
Wind10.2 mph N
Humidity32%
Visibility—
Dew point26°
Sat, 0759° / 42°0Overcast
59 °Overcast

Mount Vernon, Saturday, 7 November

Overcast. High 59°, low 42°.

Pressure30.18 inHg
Wind7.5 mph E
Humidity36%
Visibility—
Dew point30°
Sun, 0866° / 47°0.15Light rain
66 °Light rain

Mount Vernon, Sunday, 8 November

Light rain. High 66°, low 47°.

Pressure29.94 inHg
Wind14.3 mph S
Humidity59%
Visibility—
Dew point48°
Mon, 0960° / 55°0.17Light rain
60 °Light rain

Mount Vernon, Monday, 9 November

Light rain. High 60°, low 55°.

Pressure29.74 inHg
Wind15.5 mph NW
Humidity89%
Visibility—
Dew point55°
Tue, 1064° / 53°0Overcast
64 °Overcast

Mount Vernon, Tuesday, 10 November

Overcast. High 64°, low 53°.

Pressure30.00 inHg
Wind11 mph NW
Humidity61%
Visibility—
Dew point47°
Wed, 1167° / 50°0Overcast
67 °Overcast

Mount Vernon, Wednesday, 11 November

Overcast. High 67°, low 50°.

Pressure29.83 inHg
Wind17 mph S
Humidity41%
Visibility—
Dew point40°
Thu, 1271° / 56°0.23Rain
71 °Rain

Mount Vernon, Thursday, 12 November

Rain. High 71°, low 56°.

Pressure29.65 inHg
Wind17.3 mph S
Humidity47%
Visibility—
Dew point47°
Fri, 1365° / 48°0Mostly clear
65 °Mostly clear

Mount Vernon, Friday, 13 November

Mostly clear. High 65°, low 48°.

Pressure30.03 inHg
Wind13.1 mph SE
Humidity36%
Visibility—
Dew point35°

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.