Monthly outlook for Mount Vernon, MI: average high 57.8°, average low 39.5°. That is 1.4° above the climate normal for October. Precipitation is expected on 1 day (about 0.0 inches), against a normal of 5 days and 1.4 inches. The warmest day looks like 19 October (67°), the coolest 28 October (28.7°).
57.8°/39.5°
Average high / low
+1.4°
Above normal
1 / 5
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
19 October – 28 October
59.2°
56.1°
+1.7°
29 October – 7 November
55.3°
52.6°
+1.5°
8 November – 17 November
at normal
47.1°
—
October records over 66 years
85.8°8 October 2007All-time high
26.1°31 October 2023All-time low
Climate normals and records are computed from the nearest reference point — Sterling Heights (11 mi).
Tue, 2067° / 40°0
67 °
Mount Vernon, Tuesday, 20 October
Clear. High 67°, low 40°.
Pressure30.42 inHg
Wind4 mph E
Humidity53%
Visibility6.2 mi
Dew point44°
Wed, 2166° / 36°0
66 °
Mount Vernon, Wednesday, 21 October
Clear. High 66°, low 36°.
Pressure30.30 inHg
Wind1.7 mph SE
Humidity66%
Visibility6.2 mi
Dew point47°
Thu, 2259° / 43°0
59 °
Mount Vernon, Thursday, 22 October
Mostly clear. High 59°, low 43°.
Pressure30.27 inHg
Wind10.6 mph N
Humidity63%
Visibility6.2 mi
Dew point44°
Fri, 2354° / 39°0
54 °
Mount Vernon, Friday, 23 October
Clear. High 54°, low 39°.
Pressure30.45 inHg
Wind5.8 mph E
Humidity49%
Visibility6.2 mi
Dew point31°
Sat, 2456° / 39°0
56 °
Mount Vernon, Saturday, 24 October
Clear. High 56°, low 39°.
Pressure30.50 inHg
Wind7 mph S
Humidity57%
Visibility—
Dew point39°
Sun, 2566° / 42°0
66 °
Mount Vernon, Sunday, 25 October
Overcast. High 66°, low 42°.
Pressure30.42 inHg
Wind10.6 mph W
Humidity49%
Visibility—
Dew point41°
Mon, 2663° / 45°0
63 °
Mount Vernon, Monday, 26 October
Overcast. High 63°, low 45°.
Pressure30.21 inHg
Wind13.5 mph W
Humidity27%
Visibility—
Dew point28°
Tue, 2751° / 39°0
51 °
Mount Vernon, Tuesday, 27 October
Overcast. High 51°, low 39°.
Pressure30.27 inHg
Wind10.6 mph N
Humidity36%
Visibility—
Dew point23°
Wed, 2842° / 29°0.04
42 °
Mount Vernon, Wednesday, 28 October
Light snow. High 42°, low 29°.
Pressure30.33 inHg
Wind13.4 mph NW
Humidity36%
Visibility—
Dew point15°
Thu, 2950° / 29°0
50 °
Mount Vernon, Thursday, 29 October
Clear. High 50°, low 29°.
Pressure30.27 inHg
Wind12 mph W
Humidity29%
Visibility—
Dew point15°
Fri, 3054° / 33°0
54 °
Mount Vernon, Friday, 30 October
Overcast. High 54°, low 33°.
Pressure30.27 inHg
Wind13 mph SW
Humidity27%
Visibility—
Dew point17°
Sat, 3160° / 42°0
60 °
Mount Vernon, Saturday, 31 October
Overcast. High 60°, low 42°.
Pressure30.09 inHg
Wind15.9 mph SW
Humidity21%
Visibility—
Dew point18°
Sun, 0163° / 50°0
63 °
Mount Vernon, Sunday, 1 November
Overcast. High 63°, low 50°.
Pressure30.06 inHg
Wind12.1 mph SW
Humidity34%
Visibility—
Dew point32°
Mon, 0249° / 47°0
49 °
Mount Vernon, Monday, 2 November
Overcast. High 49°, low 47°.
Pressure30.18 inHg
Wind12 mph NE
Humidity75%
Visibility—
Dew point40°
Tue, 0356° / 39°0
56 °
Mount Vernon, Tuesday, 3 November
Mostly clear. High 56°, low 39°.
Pressure30.06 inHg
Wind8.9 mph NE
Humidity52%
Visibility—
Dew point36°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 0452° / 40°0.06
52 °
Mount Vernon, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low40°
Average precipitation0.06 in
Chance of precipitation35%
Record high70° (2022)
Record low22° (1991)
Thu, 0552° / 41°0.08
52 °
Mount Vernon, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high52°
Average low41°
Average precipitation0.08 in
Chance of precipitation25%
Record high73° (2024)
Record low22° (1991)
Fri, 0651° / 39°0.05
51 °
Mount Vernon, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.05 in
Chance of precipitation25%
Record high70° (2024)
Record low26° (2019)
Sat, 0750° / 39°0.09
50 °
Mount Vernon, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high50°
Average low39°
Average precipitation0.09 in
Chance of precipitation27%
Record high67° (2020)
Record low24° (1991)
Sun, 0850° / 38°0.03
50 °
Mount Vernon, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.03 in
Chance of precipitation25%
Record high67° (2020)
Record low20° (1991)
Mon, 0950° / 38°0.1
50 °
Mount Vernon, Monday, 9 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.1 in
Chance of precipitation35%
Record high70° (2020)
Record low22° (1991)
Tue, 1050° / 38°0.11
50 °
Mount Vernon, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.11 in
Chance of precipitation32%
Record high73° (2020)
Record low20° (2017)
Wed, 1147° / 37°0.11
47 °
Mount Vernon, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high47°
Average low37°
Average precipitation0.11 in
Chance of precipitation32%
Record high69° (2020)
Record low21° (2017)
Thu, 1246° / 34°0.06
46 °
Mount Vernon, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high46°
Average low34°
Average precipitation0.06 in
Chance of precipitation25%
Record high66° (1964)
Record low13° (2019)
Fri, 1346° / 34°0.05
46 °
Mount Vernon, Friday, 13 November
Climate normal for this date — 60-year average.
Average high46°
Average low34°
Average precipitation0.05 in
Chance of precipitation22%
Record high64° (1989)
Record low5° (2019)
Sat, 1446° / 35°0.09
46 °
Mount Vernon, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.09 in
Chance of precipitation30%
Record high62° (1973)
Record low17° (1986)
Sun, 1546° / 35°0.13
46 °
Mount Vernon, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.13 in
Chance of precipitation35%
Record high65° (2001)
Record low22° (1967)
Mon, 1645° / 34°0.07
45 °
Mount Vernon, Monday, 16 November
Climate normal for this date — 60-year average.
Average high45°
Average low34°
Average precipitation0.07 in
Chance of precipitation22%
Record high61° (1988)
Record low17° (2019)
Tue, 1745° / 34°0.07
45 °
Mount Vernon, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high45°
Average low34°
Average precipitation0.07 in
Chance of precipitation35%
Record high64° (1963)
Record low17° (2019)
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, MI 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, MI 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.