Monthly outlook for Oconomowoc, WI: average high 59.9°, average low 44.8°. That is 2.5° above the climate normal for October. Precipitation is expected on 4 days (about 1.0 inches), against a normal of 5 days and 1.3 inches. The warmest day looks like 22 October (67.5°), the coolest 17 October (37.3°).
59.9°/44.8°
Average high / low
+2.5°
Above normal
4 / 5
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
16 October – 25 October
61.4°
56.6°
+2.7°
26 October – 4 November
57.6°
52.6°
+2.8°
5 November – 14 November
at normal
47°
—
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).
Sat, 1757° / 37°0
57 °
Oconomowoc, Saturday, 17 October
Clear. High 57°, low 37°.
Pressure30.50 inHg
Wind10 mph SW
Humidity45%
Visibility6.2 mi
Dew point31°
Sun, 1860° / 42°0
60 °
Oconomowoc, Sunday, 18 October
Clear. High 60°, low 42°.
Pressure30.39 inHg
Wind14.6 mph SW
Humidity47%
Visibility6.2 mi
Dew point37°
Mon, 1963° / 41°0
63 °
Oconomowoc, Monday, 19 October
Clear. High 63°, low 41°.
Pressure30.39 inHg
Wind4.7 mph S
Humidity54%
Visibility6.2 mi
Dew point43°
Tue, 2065° / 43°0
65 °
Oconomowoc, Tuesday, 20 October
Partly cloudy. High 65°, low 43°.
Pressure30.36 inHg
Wind7.3 mph E
Humidity47%
Visibility—
Dew point41°
Wed, 2166° / 45°0
66 °
Oconomowoc, Wednesday, 21 October
Overcast. High 66°, low 45°.
Pressure30.30 inHg
Wind5.9 mph S
Humidity44%
Visibility—
Dew point40°
Thu, 2267° / 53°0
67 °
Oconomowoc, Thursday, 22 October
Light rain. High 67°, low 53°.
Pressure30.09 inHg
Wind11.9 mph SW
Humidity54%
Visibility—
Dew point45°
Fri, 2357° / 42°0
57 °
Oconomowoc, Friday, 23 October
Clear. High 57°, low 42°.
Pressure30.33 inHg
Wind12 mph NE
Humidity58%
Visibility—
Dew point40°
Sat, 2459° / 44°0
59 °
Oconomowoc, Saturday, 24 October
Overcast. High 59°, low 44°.
Pressure30.27 inHg
Wind11.9 mph SE
Humidity56%
Visibility—
Dew point41°
Sun, 2566° / 48°0
66 °
Oconomowoc, Sunday, 25 October
Overcast. High 66°, low 48°.
Pressure30.18 inHg
Wind7.9 mph S
Humidity49%
Visibility—
Dew point42°
Mon, 2665° / 47°0.04
65 °
Oconomowoc, Monday, 26 October
Light rain. High 65°, low 47°.
Pressure30.09 inHg
Wind9.6 mph S
Humidity39%
Visibility—
Dew point36°
Tue, 2755° / 41°0
55 °
Oconomowoc, Tuesday, 27 October
Overcast. High 55°, low 41°.
Pressure30.18 inHg
Wind10.5 mph W
Humidity58%
Visibility—
Dew point36°
Wed, 2851° / 45°0.3
51 °
Oconomowoc, Wednesday, 28 October
Light rain. High 51°, low 45°.
Pressure30.18 inHg
Wind11.3 mph E
Humidity96%
Visibility—
Dew point45°
Thu, 2966° / 52°0.64
66 °
Oconomowoc, Thursday, 29 October
Rain. High 66°, low 52°.
Pressure29.94 inHg
Wind14.1 mph SE
Humidity84%
Visibility—
Dew point56°
Fri, 3058° / 47°0
58 °
Oconomowoc, Friday, 30 October
Overcast. High 58°, low 47°.
Pressure30.09 inHg
Wind10.6 mph NW
Humidity64%
Visibility—
Dew point44°
Sat, 3152° / 47°0
52 °
Oconomowoc, Saturday, 31 October
Overcast. High 52°, low 47°.
Pressure30.24 inHg
Wind18.1 mph NE
Humidity73%
Visibility—
Dew point43°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0152° / 40°0.18
52 °
Oconomowoc, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high52°
Average low40°
Average precipitation0.18 in
Chance of precipitation42%
Record high71° (2016)
Record low19° (2019)
Mon, 0251° / 39°0.12
51 °
Oconomowoc, Monday, 2 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.12 in
Chance of precipitation37%
Record high72° (1961)
Record low21° (1991)
Tue, 0351° / 38°0.05
51 °
Oconomowoc, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.05 in
Chance of precipitation25%
Record high70° (1964)
Record low16° (1991)
Wed, 0450° / 39°0.08
50 °
Oconomowoc, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high50°
Average low39°
Average precipitation0.08 in
Chance of precipitation23%
Record high69° (2008)
Record low13° (1991)
Thu, 0550° / 38°0.1
50 °
Oconomowoc, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.1 in
Chance of precipitation30%
Record high69° (1978)
Record low18° (1991)
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)
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.