Monthly outlook for Mount Vernon, MI: average high 55.3°, average low 40°. That is 0.2° above the climate normal for October. Precipitation is expected on 3 days (about 1.2 inches), against a normal of 5 days and 1.4 inches. The warmest day looks like 20 October (66.9°), the coolest 28 October (28.4°).
55.3°/40°
Average high / low
+0.2°
Above normal
3 / 5
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
20 October – 29 October
56.4°
55.8°
+0.3°
30 October – 8 November
53.4°
52.3°
+0.7°
9 November – 18 November
at normal
46.7°
—
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).
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
Wind9.4 mph W
Humidity49%
Visibility—
Dew point41°
Mon, 2661° / 46°0.02
61 °
Mount Vernon, Monday, 26 October
Light rain. High 61°, low 46°.
Pressure30.24 inHg
Wind7.6 mph NW
Humidity27%
Visibility—
Dew point25°
Tue, 2747° / 34°0.48
47 °
Mount Vernon, Tuesday, 27 October
Rain. High 47°, low 34°.
Pressure30.12 inHg
Wind14.5 mph NW
Humidity93%
Visibility—
Dew point39°
Wed, 2840° / 28°0
40 °
Mount Vernon, Wednesday, 28 October
Partly cloudy. High 40°, low 28°.
Pressure30.27 inHg
Wind16.3 mph NW
Humidity32%
Visibility—
Dew point11°
Thu, 2947° / 32°0
47 °
Mount Vernon, Thursday, 29 October
Clear. High 47°, low 32°.
Pressure30.09 inHg
Wind15.9 mph W
Humidity32%
Visibility—
Dew point16°
Fri, 3052° / 33°0
52 °
Mount Vernon, Friday, 30 October
Clear. High 52°, low 33°.
Pressure30.06 inHg
Wind12.6 mph W
Humidity38%
Visibility—
Dew point24°
Sat, 3156° / 39°0
56 °
Mount Vernon, Saturday, 31 October
Overcast. High 56°, low 39°.
Pressure30.24 inHg
Wind6.9 mph W
Humidity32%
Visibility—
Dew point24°
Sun, 0156° / 51°0
56 °
Mount Vernon, Sunday, 1 November
Overcast. High 56°, low 51°.
Pressure30.18 inHg
Wind11.1 mph SW
Humidity33%
Visibility—
Dew point27°
Mon, 0253° / 49°0.64
53 °
Mount Vernon, Monday, 2 November
Rain. High 53°, low 49°.
Pressure30.03 inHg
Wind11.2 mph SE
Humidity93%
Visibility—
Dew point47°
Tue, 0352° / 46°0.11
52 °
Mount Vernon, Tuesday, 3 November
Light rain. High 52°, low 46°.
Pressure29.71 inHg
Wind13.3 mph NW
Humidity86%
Visibility—
Dew point47°
Wed, 0450° / 43°0
50 °
Mount Vernon, Wednesday, 4 November
Mostly clear. High 50°, low 43°.
Pressure30.03 inHg
Wind13.8 mph NW
Humidity43%
Visibility—
Dew point28°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Wed, 1846° / 35°0.09
46 °
Mount Vernon, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.09 in
Chance of precipitation25%
Record high65° (1971)
Record low15° (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, 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.