Monthly outlook for Mount Vernon, WI: average high 53.4°, average low 42.3°. That is 1.9° above the climate normal for October. Precipitation is expected on 7 days (about 3.1 inches), against a normal of 4 days and 1.4 inches. The warmest day looks like 28 October (70.3°), the coolest 7 November (24.1°).
53.4°/42.3°
Average high / low
+1.9°
Above normal
7 / 4
Wet days / normal
3.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
26 October – 4 November
60.5°
51.6°
+4.9°
5 November – 14 November
41.8°
45.7°
-2.2°
15 November – 24 November
at normal
42°
—
October records over 66 years
84.7°3 October 2025All-time high
21.6°30 October 1988All-time low
Climate normals and records are computed from the nearest reference point — Mount Horeb (6 mi).
Tue, 2766° / 47°0
66 °
Mount Vernon, Tuesday, 27 October
Overcast. High 66°, low 47°.
Pressure30.21 inHg
Wind8.8 mph SE
Humidity78%
Visibility6.2 mi
Dew point50°
Wed, 2870° / 50°0
70 °
Mount Vernon, Wednesday, 28 October
Clear. High 70°, low 50°.
Pressure30.12 inHg
Wind9.4 mph S
Humidity65%
Visibility6.2 mi
Dew point53°
Thu, 2965° / 47°0.02
65 °
Mount Vernon, Thursday, 29 October
Light rain. High 65°, low 47°.
Pressure30.09 inHg
Wind9.1 mph NW
Humidity82%
Visibility6.2 mi
Dew point56°
Fri, 3060° / 43°0
60 °
Mount Vernon, Friday, 30 October
Overcast. High 60°, low 43°.
Pressure30.27 inHg
Wind4.7 mph SE
Humidity59%
Visibility6.2 mi
Dew point42°
Sat, 3157° / 51°0.66
57 °
Mount Vernon, Saturday, 31 October
Rain. High 57°, low 51°.
Pressure30.15 inHg
Wind9 mph E
Humidity95%
Visibility—
Dew point54°
Sun, 0160° / 53°0.03
60 °
Mount Vernon, Sunday, 1 November
Light rain. High 60°, low 53°.
Pressure30.00 inHg
Wind6.2 mph E
Humidity82%
Visibility—
Dew point54°
Mon, 0254° / 50°0
54 °
Mount Vernon, Monday, 2 November
Overcast. High 54°, low 50°.
Pressure29.88 inHg
Wind11.2 mph NE
Humidity85%
Visibility—
Dew point49°
Tue, 0356° / 53°1.09
56 °
Mount Vernon, Tuesday, 3 November
Rain. High 56°, low 53°.
Pressure29.83 inHg
Wind24.4 mph E
Humidity95%
Visibility—
Dew point55°
Wed, 0455° / 48°0.82
55 °
Mount Vernon, Wednesday, 4 November
Rain. High 55°, low 48°.
Pressure29.38 inHg
Wind23.6 mph E
Humidity90%
Visibility—
Dew point48°
Thu, 0547° / 32°0.18
47 °
Mount Vernon, Thursday, 5 November
Snow. High 47°, low 32°.
Pressure29.44 inHg
Wind22.4 mph NW
Humidity94%
Visibility—
Dew point35°
Fri, 0635° / 29°0.09
35 °
Mount Vernon, Friday, 6 November
Light snow. High 35°, low 29°.
Pressure29.80 inHg
Wind21.5 mph NW
Humidity81%
Visibility—
Dew point29°
Sat, 0737° / 24°0
37 °
Mount Vernon, Saturday, 7 November
Clear. High 37°, low 24°.
Pressure30.09 inHg
Wind13.1 mph NW
Humidity56%
Visibility—
Dew point20°
Sun, 0840° / 26°0.04
40 °
Mount Vernon, Sunday, 8 November
Light rain. High 40°, low 26°.
Pressure30.06 inHg
Wind14.8 mph SE
Humidity45%
Visibility—
Dew point18°
Mon, 0949° / 40°0.16
49 °
Mount Vernon, Monday, 9 November
Rain. High 49°, low 40°.
Pressure29.56 inHg
Wind15.1 mph S
Humidity96%
Visibility—
Dew point44°
Tue, 1042° / 36°0
42 °
Mount Vernon, Tuesday, 10 November
Overcast. High 42°, low 36°.
Pressure29.74 inHg
Wind13.2 mph NW
Humidity69%
Visibility—
Dew point32°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 1144° / 31°0.07
44 °
Mount Vernon, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.07 in
Chance of precipitation27%
Record high67° (1964)
Record low12° (2019)
Thu, 1242° / 30°0.06
42 °
Mount Vernon, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high42°
Average low30°
Average precipitation0.06 in
Chance of precipitation32%
Record high62° (1964)
Record low2° (2019)
Fri, 1343° / 30°0.04
43 °
Mount Vernon, Friday, 13 November
Climate normal for this date — 60-year average.
Average high43°
Average low30°
Average precipitation0.04 in
Chance of precipitation18%
Record high66° (1999)
Record low5° (1986)
Sat, 1444° / 31°0.03
44 °
Mount Vernon, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.03 in
Chance of precipitation20%
Record high64° (1971)
Record low14° (2019)
Sun, 1544° / 32°0.06
44 °
Mount Vernon, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.06 in
Chance of precipitation28%
Record high66° (2025)
Record low13° (1995)
Mon, 1644° / 31°0.05
44 °
Mount Vernon, Monday, 16 November
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.05 in
Chance of precipitation22%
Record high60° (2023)
Record low19° (1989)
Tue, 1744° / 32°0.09
44 °
Mount Vernon, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.09 in
Chance of precipitation22%
Record high67° (2016)
Record low11° (2005)
Wed, 1844° / 31°0.08
44 °
Mount Vernon, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.08 in
Chance of precipitation30%
Record high64° (1999)
Record low9° (2014)
Thu, 1943° / 31°0.06
43 °
Mount Vernon, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.06 in
Chance of precipitation27%
Record high61° (2020)
Record low10° (1986)
Fri, 2041° / 30°0.08
41 °
Mount Vernon, Friday, 20 November
Climate normal for this date — 60-year average.
Average high41°
Average low30°
Average precipitation0.08 in
Chance of precipitation32%
Record high60° (2003)
Record low10° (2022)
Sat, 2140° / 28°0.09
40 °
Mount Vernon, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high40°
Average low28°
Average precipitation0.09 in
Chance of precipitation25%
Record high63° (1990)
Record low5° (1964)
Sun, 2240° / 28°0.03
40 °
Mount Vernon, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high40°
Average low28°
Average precipitation0.03 in
Chance of precipitation15%
Record high59° (2012)
Record low5° (2015)
Mon, 2341° / 29°0.1
41 °
Mount Vernon, Monday, 23 November
Climate normal for this date — 60-year average.
Average high41°
Average low29°
Average precipitation0.1 in
Chance of precipitation32%
Record high59° (1983)
Record low9° (1970)
Tue, 2439° / 27°0.06
39 °
Mount Vernon, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high39°
Average low27°
Average precipitation0.06 in
Chance of precipitation23%
Record high58° (2017)
Record low3° (1985)
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, WI 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, WI 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.