Monthly outlook for Mount Vernon, WI: average high 60.7°, average low 47.7°. That is 5.7° above the climate normal for October. Precipitation is expected on 5 days (about 1.8 inches), against a normal of 4 days and 1.3 inches. The warmest day looks like 25 October (71°), the coolest 9 November (32.6°).
60.7°/47.7°
Average high / low
+5.7°
Above normal
5 / 4
Wet days / normal
1.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
25 October – 3 November
64.8°
52.1°
+7.1°
4 November – 13 November
54°
46.2°
+4.3°
14 November – 23 November
at normal
42.4°
—
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).
Mon, 2663° / 48°0
63 °
Mount Vernon, Monday, 26 October
Overcast. High 63°, low 48°.
Pressure30.36 inHg
Wind8.2 mph E
Humidity62%
Visibility6.2 mi
Dew point46°
Tue, 2767° / 47°0
67 °
Mount Vernon, Tuesday, 27 October
Overcast. High 67°, low 47°.
Pressure30.21 inHg
Wind10 mph SE
Humidity73%
Visibility6.2 mi
Dew point53°
Wed, 2868° / 53°0.23
68 °
Mount Vernon, Wednesday, 28 October
Rain. High 68°, low 53°.
Pressure30.09 inHg
Wind12.2 mph SW
Humidity66%
Visibility6.2 mi
Dew point53°
Thu, 2963° / 50°0.59
63 °
Mount Vernon, Thursday, 29 October
Rain. High 63°, low 50°.
Pressure30.15 inHg
Wind7.9 mph S
Humidity55%
Visibility—
Dew point45°
Fri, 3064° / 47°0.39
64 °
Mount Vernon, Friday, 30 October
Rain. High 64°, low 47°.
Pressure30.12 inHg
Wind10.5 mph SE
Humidity74%
Visibility—
Dew point53°
Sat, 3162° / 57°0.09
62 °
Mount Vernon, Saturday, 31 October
Light rain. High 62°, low 57°.
Pressure30.00 inHg
Wind10.4 mph SW
Humidity84%
Visibility—
Dew point53°
Sun, 0167° / 58°0.48
67 °
Mount Vernon, Sunday, 1 November
Rain. High 67°, low 58°.
Pressure29.71 inHg
Wind18.4 mph W
Humidity81%
Visibility—
Dew point61°
Mon, 0264° / 50°0
64 °
Mount Vernon, Monday, 2 November
Clear. High 64°, low 50°.
Pressure30.09 inHg
Wind8.3 mph NW
Humidity60%
Visibility—
Dew point48°
Tue, 0359° / 48°0
59 °
Mount Vernon, Tuesday, 3 November
Overcast. High 59°, low 48°.
Pressure30.15 inHg
Wind10.1 mph SE
Humidity56%
Visibility—
Dew point42°
Wed, 0458° / 47°0
58 °
Mount Vernon, Wednesday, 4 November
Overcast. High 58°, low 47°.
Pressure29.68 inHg
Wind12.1 mph W
Humidity77%
Visibility—
Dew point46°
Thu, 0550° / 41°0
50 °
Mount Vernon, Thursday, 5 November
Overcast. High 50°, low 41°.
Pressure30.06 inHg
Wind15.1 mph NW
Humidity50%
Visibility—
Dew point29°
Fri, 0657° / 39°0
57 °
Mount Vernon, Friday, 6 November
Overcast. High 57°, low 39°.
Pressure29.83 inHg
Wind14.9 mph S
Humidity57%
Visibility—
Dew point38°
Sat, 0766° / 52°0
66 °
Mount Vernon, Saturday, 7 November
Overcast. High 66°, low 52°.
Pressure29.47 inHg
Wind20.5 mph W
Humidity70%
Visibility—
Dew point54°
Sun, 0850° / 40°0
50 °
Mount Vernon, Sunday, 8 November
Partly cloudy. High 50°, low 40°.
Pressure29.97 inHg
Wind18 mph NW
Humidity51%
Visibility—
Dew point30°
Mon, 0944° / 33°0
44 °
Mount Vernon, Monday, 9 November
Clear. High 44°, low 33°.
Pressure30.27 inHg
Wind11.7 mph NW
Humidity52%
Visibility—
Dew point26°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 1046° / 33°0.11
46 °
Mount Vernon, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.11 in
Chance of precipitation33%
Record high69° (2022)
Record low12° (2017)
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)
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.