As of 08:16 CDT

Weather in Mount Vernon, MO

55°Current weather

Mount Vernon, Tuesday, 20 October, 08:16

Partly cloudy. Feels like 54°. High 69°, low 48°.

Pressure30.33 inHg
Wind3 mph SE
Humidity77%
Visibility6.2 mi
Dew point48°

Monthly outlook for Mount Vernon, MO: average high 65.5°, average low 46.1°. That is 1.1° above the climate normal for October. Precipitation is expected on 4 days (about 0.2 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 24 October (75.6°), the coolest 28 October (29.7°).

65.5°/46.1°
Average high / low
+1.1°
Above normal
4 / 5
Wet days / normal
0.2 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
20 October – 29 October67.8°65°+1.6°
30 October – 8 November61.6°60.4°+0.7°
9 November – 18 Novemberat normal56.6°—

October records over 66 years

89.6°3 October 2006All-time high
25.2°31 October 1993All-time low

Climate normals and records are computed from the nearest reference point — Miller (8 mi).

Wed, 2173° / 46°0Light rain
73 °Light rain

Mount Vernon, Wednesday, 21 October

Light rain. High 73°, low 46°.

Pressure30.27 inHg
Wind3.6 mph SW
Humidity49%
Visibility6.2 mi
Dew point48°
Thu, 2273° / 48°0Clear
73 °Clear

Mount Vernon, Thursday, 22 October

Clear. High 73°, low 48°.

Pressure30.27 inHg
Wind4.7 mph SE
Humidity47%
Visibility6.2 mi
Dew point49°
Fri, 2373° / 55°0Clear
73 °Clear

Mount Vernon, Friday, 23 October

Clear. High 73°, low 55°.

Pressure30.24 inHg
Wind10.5 mph SE
Humidity52%
Visibility6.2 mi
Dew point51°
Sat, 2476° / 56°0Overcast
76 °Overcast

Mount Vernon, Saturday, 24 October

Overcast. High 76°, low 56°.

Pressure30.27 inHg
Wind11.9 mph SE
Humidity45%
Visibility—
Dew point49°
Sun, 2575° / 58°0Overcast
75 °Overcast

Mount Vernon, Sunday, 25 October

Overcast. High 75°, low 58°.

Pressure30.36 inHg
Wind10.4 mph SE
Humidity45%
Visibility—
Dew point49°
Mon, 2671° / 45°0.05Light rain
71 °Light rain

Mount Vernon, Monday, 26 October

Light rain. High 71°, low 45°.

Pressure30.15 inHg
Wind16.2 mph N
Humidity35%
Visibility—
Dew point40°
Tue, 2751° / 36°0.03Light rain
51 °Light rain

Mount Vernon, Tuesday, 27 October

Light rain. High 51°, low 36°.

Pressure30.53 inHg
Wind17.2 mph N
Humidity34%
Visibility—
Dew point21°
Wed, 2855° / 30°0Clear
55 °Clear

Mount Vernon, Wednesday, 28 October

Clear. High 55°, low 30°.

Pressure30.45 inHg
Wind7.4 mph SW
Humidity33%
Visibility—
Dew point21°
Thu, 2961° / 39°0Overcast
61 °Overcast

Mount Vernon, Thursday, 29 October

Overcast. High 61°, low 39°.

Pressure30.21 inHg
Wind11.8 mph W
Humidity37%
Visibility—
Dew point31°
Fri, 3056° / 35°0Overcast
56 °Overcast

Mount Vernon, Friday, 30 October

Overcast. High 56°, low 35°.

Pressure30.42 inHg
Wind10.5 mph NE
Humidity34%
Visibility—
Dew point24°
Sat, 3145° / 42°0.05Light rain
45 °Light rain

Mount Vernon, Saturday, 31 October

Light rain. High 45°, low 42°.

Pressure30.30 inHg
Wind9.4 mph S
Humidity70%
Visibility—
Dew point36°
Sun, 0159° / 43°0Overcast
59 °Overcast

Mount Vernon, Sunday, 1 November

Overcast. High 59°, low 43°.

Pressure30.18 inHg
Wind9.4 mph W
Humidity73%
Visibility—
Dew point46°
Mon, 0268° / 48°0Clear
68 °Clear

Mount Vernon, Monday, 2 November

Clear. High 68°, low 48°.

Pressure30.24 inHg
Wind9 mph S
Humidity47%
Visibility—
Dew point42°
Tue, 0370° / 50°0.05Light rain
70 °Light rain

Mount Vernon, Tuesday, 3 November

Light rain. High 70°, low 50°.

Pressure30.03 inHg
Wind20.8 mph S
Humidity44%
Visibility—
Dew point45°
Wed, 0471° / 59°0.05Light rain
71 °Light rain

Mount Vernon, Wednesday, 4 November

Light rain. High 71°, low 59°.

Pressure29.97 inHg
Wind18.7 mph S
Humidity59%
Visibility—
Dew point55°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 0559° / 44°0.11Climate normal
59 °Climate normal

Mount Vernon, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high59°
Average low44°
Average precipitation0.11 in
Chance of precipitation33%
Record high77° (2017)
Record low25° (1976)
Fri, 0659° / 42°0.1Climate normal
59 °Climate normal

Mount Vernon, Friday, 6 November

Climate normal for this date — 60-year average.

Average high59°
Average low42°
Average precipitation0.1 in
Chance of precipitation23%
Record high76° (1999)
Record low26° (1993)
Sat, 0759° / 43°0.06Climate normal
59 °Climate normal

Mount Vernon, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high59°
Average low43°
Average precipitation0.06 in
Chance of precipitation18%
Record high78° (2023)
Record low24° (1991)
Sun, 0860° / 44°0.09Climate normal
60 °Climate normal

Mount Vernon, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high60°
Average low44°
Average precipitation0.09 in
Chance of precipitation17%
Record high79° (1980)
Record low17° (1991)
Mon, 0960° / 44°0.09Climate normal
60 °Climate normal

Mount Vernon, Monday, 9 November

Climate normal for this date — 60-year average.

Average high60°
Average low44°
Average precipitation0.09 in
Chance of precipitation28%
Record high78° (2006)
Record low23° (1991)
Tue, 1058° / 42°0.1Climate normal
58 °Climate normal

Mount Vernon, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high58°
Average low42°
Average precipitation0.1 in
Chance of precipitation32%
Record high75° (2022)
Record low17° (2018)
Wed, 1157° / 40°0.1Climate normal
57 °Climate normal

Mount Vernon, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high57°
Average low40°
Average precipitation0.1 in
Chance of precipitation27%
Record high75° (1989)
Record low21° (2019)
Thu, 1255° / 39°0.08Climate normal
55 °Climate normal

Mount Vernon, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high55°
Average low39°
Average precipitation0.08 in
Chance of precipitation25%
Record high77° (1999)
Record low11° (2019)
Fri, 1356° / 39°0.06Climate normal
56 °Climate normal

Mount Vernon, Friday, 13 November

Climate normal for this date — 60-year average.

Average high56°
Average low39°
Average precipitation0.06 in
Chance of precipitation22%
Record high78° (1999)
Record low11° (1986)
Sat, 1456° / 41°0.08Climate normal
56 °Climate normal

Mount Vernon, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high56°
Average low41°
Average precipitation0.08 in
Chance of precipitation28%
Record high76° (2025)
Record low15° (2018)
Sun, 1556° / 40°0.15Climate normal
56 °Climate normal

Mount Vernon, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high56°
Average low40°
Average precipitation0.15 in
Chance of precipitation37%
Record high78° (2025)
Record low20° (2018)
Mon, 1656° / 39°0.1Climate normal
56 °Climate normal

Mount Vernon, Monday, 16 November

Climate normal for this date — 60-year average.

Average high56°
Average low39°
Average precipitation0.1 in
Chance of precipitation23%
Record high74° (2016)
Record low24° (1997)
Tue, 1757° / 41°0.11Climate normal
57 °Climate normal

Mount Vernon, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high57°
Average low41°
Average precipitation0.11 in
Chance of precipitation27%
Record high74° (2016)
Record low19° (2014)
Wed, 1856° / 40°0.12Climate normal
56 °Climate normal

Mount Vernon, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high56°
Average low40°
Average precipitation0.12 in
Chance of precipitation27%
Record high74° (2025)
Record low16° (2014)

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.