Monthly outlook for Oconomowoc, WI: average high 59.1°, average low 42.3°. That is 3.1° above the climate normal for October. Precipitation is expected on 4 days (about 1.9 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 22 October (72.9°), the coolest 3 November (30.3°).
59.1°/42.3°
Average high / low
+3.1°
Above normal
4 / 5
Wet days / normal
1.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
21 October – 30 October
62.6°
54.9°
+4.3°
31 October – 9 November
53.2°
50.2°
+1.7°
10 November – 19 November
at normal
44.8°
—
October records over 66 years
84.9°3 October 2025All-time high
23°30 October 1988All-time low
Climate normals and records are computed from the nearest reference point — North Prairie (12 mi).
Thu, 2273° / 45°0
73 °
Oconomowoc, Thursday, 22 October
Clear. High 73°, low 45°.
Pressure30.27 inHg
Wind2.3 mph SE
Humidity62%
Visibility6.2 mi
Dew point54°
Fri, 2372° / 47°0
72 °
Oconomowoc, Friday, 23 October
Overcast. High 72°, low 47°.
Pressure30.30 inHg
Wind6.6 mph S
Humidity59%
Visibility6.2 mi
Dew point52°
Sat, 2467° / 51°0
67 °
Oconomowoc, Saturday, 24 October
Overcast. High 67°, low 51°.
Pressure30.36 inHg
Wind9.8 mph S
Humidity56%
Visibility6.2 mi
Dew point49°
Sun, 2568° / 53°0
68 °
Oconomowoc, Sunday, 25 October
Overcast. High 68°, low 53°.
Pressure30.36 inHg
Wind4.8 mph SW
Humidity61%
Visibility6.2 mi
Dew point51°
Mon, 2662° / 50°0
62 °
Oconomowoc, Monday, 26 October
Overcast. High 62°, low 50°.
Pressure30.36 inHg
Wind8.7 mph E
Humidity66%
Visibility—
Dew point49°
Tue, 2758° / 45°0.41
58 °
Oconomowoc, Tuesday, 27 October
Rain. High 58°, low 45°.
Pressure30.21 inHg
Wind9.8 mph SE
Humidity79%
Visibility—
Dew point51°
Wed, 2846° / 37°0.31
46 °
Oconomowoc, Wednesday, 28 October
Rain. High 46°, low 37°.
Pressure30.30 inHg
Wind12.1 mph N
Humidity48%
Visibility—
Dew point26°
Thu, 2952° / 33°0
52 °
Oconomowoc, Thursday, 29 October
Clear. High 52°, low 33°.
Pressure30.30 inHg
Wind7.9 mph SW
Humidity43%
Visibility—
Dew point27°
Fri, 3055° / 37°0
55 °
Oconomowoc, Friday, 30 October
Partly cloudy. High 55°, low 37°.
Pressure30.12 inHg
Wind17 mph SW
Humidity44%
Visibility—
Dew point31°
Sat, 3159° / 50°0.07
59 °
Oconomowoc, Saturday, 31 October
Light rain. High 59°, low 50°.
Pressure29.97 inHg
Wind21.2 mph SW
Humidity56%
Visibility—
Dew point42°
Sun, 0154° / 52°1.1
54 °
Oconomowoc, Sunday, 1 November
Rain. High 54°, low 52°.
Pressure29.85 inHg
Wind20.2 mph SW
Humidity94%
Visibility—
Dew point51°
Mon, 0251° / 37°0.01
51 °
Oconomowoc, Monday, 2 November
Light rain. High 51°, low 37°.
Pressure30.09 inHg
Wind18.8 mph NW
Humidity52%
Visibility—
Dew point30°
Tue, 0347° / 30°0
47 °
Oconomowoc, Tuesday, 3 November
Clear. High 47°, low 30°.
Pressure30.18 inHg
Wind16.4 mph W
Humidity38%
Visibility—
Dew point20°
Wed, 0454° / 34°0
54 °
Oconomowoc, Wednesday, 4 November
Overcast. High 54°, low 34°.
Pressure29.68 inHg
Wind21.9 mph SW
Humidity59%
Visibility—
Dew point37°
Thu, 0555° / 35°0.01
55 °
Oconomowoc, Thursday, 5 November
Light rain. High 55°, low 35°.
Pressure29.62 inHg
Wind24.4 mph W
Humidity56%
Visibility—
Dew point30°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 0649° / 37°0.08
49 °
Oconomowoc, Friday, 6 November
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.08 in
Chance of precipitation30%
Record high69° (1975)
Record low18° (1991)
Sat, 0749° / 36°0.03
49 °
Oconomowoc, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.03 in
Chance of precipitation18%
Record high67° (2020)
Record low10° (1991)
Sun, 0849° / 36°0.04
49 °
Oconomowoc, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.04 in
Chance of precipitation20%
Record high69° (2020)
Record low12° (1991)
Mon, 0949° / 37°0.1
49 °
Oconomowoc, Monday, 9 November
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.1 in
Chance of precipitation30%
Record high73° (2020)
Record low19° (1991)
Tue, 1047° / 35°0.1
47 °
Oconomowoc, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.1 in
Chance of precipitation33%
Record high72° (2022)
Record low15° (2017)
Wed, 1145° / 33°0.07
45 °
Oconomowoc, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.07 in
Chance of precipitation27%
Record high67° (1964)
Record low13° (2019)
Thu, 1243° / 32°0.05
43 °
Oconomowoc, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high43°
Average low32°
Average precipitation0.05 in
Chance of precipitation30%
Record high62° (1964)
Record low2° (2019)
Fri, 1344° / 31°0.04
44 °
Oconomowoc, Friday, 13 November
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.04 in
Chance of precipitation20%
Record high66° (1989)
Record low7° (2019)
Sat, 1445° / 32°0.04
45 °
Oconomowoc, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.04 in
Chance of precipitation22%
Record high66° (1971)
Record low11° (1995)
Sun, 1545° / 33°0.06
45 °
Oconomowoc, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.06 in
Chance of precipitation27%
Record high68° (2025)
Record low14° (1995)
Mon, 1645° / 33°0.05
45 °
Oconomowoc, Monday, 16 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.05 in
Chance of precipitation15%
Record high61° (1988)
Record low21° (1989)
Tue, 1745° / 33°0.08
45 °
Oconomowoc, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.08 in
Chance of precipitation25%
Record high68° (2016)
Record low14° (2014)
Wed, 1845° / 33°0.09
45 °
Oconomowoc, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.09 in
Chance of precipitation32%
Record high64° (1975)
Record low11° (2014)
Thu, 1944° / 32°0.05
44 °
Oconomowoc, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.05 in
Chance of precipitation28%
Record high62° (1985)
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 Oconomowoc, 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 Oconomowoc, 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.