Monthly outlook for Lake Ivanhoe, WI: average high 56.7°, average low 42.7°. That is 0.1° above the climate normal for October. Precipitation is expected on 4 days (about 0.8 inches), against a normal of 5 days and 1.3 inches. The warmest day looks like 22 October (68.4°), the coolest 30 October (28.1°).
56.7°/42.7°
Average high / low
+0.1°
Above normal
4 / 5
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 October – 24 October
62.4°
57.7°
+2.6°
25 October – 3 November
47.2°
53.8°
-3.6°
4 November – 13 November
at normal
48.4°
—
October records over 66 years
85.3°3 October 2025All-time high
25°30 October 1988All-time low
Climate normals and records are computed from the nearest reference point — New Munster (6 mi).
Fri, 1656° / 44°0.04
56 °
Lake Ivanhoe, Friday, 16 October
Light rain. High 56°, low 44°.
Pressure30.06 inHg
Wind16.8 mph N
Humidity80%
Visibility4.9 mi
Dew point44°
Sat, 1755° / 38°0
55 °
Lake Ivanhoe, Saturday, 17 October
Clear. High 55°, low 38°.
Pressure30.50 inHg
Wind8.7 mph SW
Humidity48%
Visibility6.2 mi
Dew point33°
Sun, 1860° / 44°0
60 °
Lake Ivanhoe, Sunday, 18 October
Clear. High 60°, low 44°.
Pressure30.39 inHg
Wind15.7 mph SW
Humidity49%
Visibility6.2 mi
Dew point38°
Mon, 1962° / 43°0
62 °
Lake Ivanhoe, Monday, 19 October
Overcast. High 62°, low 43°.
Pressure30.33 inHg
Wind11.6 mph SW
Humidity54%
Visibility—
Dew point42°
Tue, 2066° / 50°0.01
66 °
Lake Ivanhoe, Tuesday, 20 October
Light rain. High 66°, low 50°.
Pressure30.30 inHg
Wind4.5 mph SW
Humidity48%
Visibility—
Dew point44°
Wed, 2166° / 48°0
66 °
Lake Ivanhoe, Wednesday, 21 October
Clear. High 66°, low 48°.
Pressure30.36 inHg
Wind7 mph SE
Humidity46%
Visibility—
Dew point42°
Thu, 2268° / 51°0
68 °
Lake Ivanhoe, Thursday, 22 October
Mostly clear. High 68°, low 51°.
Pressure30.21 inHg
Wind10.8 mph S
Humidity49%
Visibility—
Dew point46°
Fri, 2368° / 51°0
68 °
Lake Ivanhoe, Friday, 23 October
Overcast. High 68°, low 51°.
Pressure30.15 inHg
Wind13.7 mph S
Humidity42%
Visibility—
Dew point41°
Sat, 2460° / 54°0.19
60 °
Lake Ivanhoe, Saturday, 24 October
Light rain. High 60°, low 54°.
Pressure30.12 inHg
Wind15 mph S
Humidity91%
Visibility—
Dew point53°
Sun, 2553° / 42°0.21
53 °
Lake Ivanhoe, Sunday, 25 October
Rain. High 53°, low 42°.
Pressure30.09 inHg
Wind14.9 mph W
Humidity51%
Visibility—
Dew point33°
Mon, 2647° / 34°0
47 °
Lake Ivanhoe, Monday, 26 October
Clear. High 47°, low 34°.
Pressure30.27 inHg
Wind15.1 mph W
Humidity41%
Visibility—
Dew point22°
Tue, 2743° / 32°0
43 °
Lake Ivanhoe, Tuesday, 27 October
Partly cloudy. High 43°, low 32°.
Pressure30.24 inHg
Wind12.7 mph W
Humidity33%
Visibility—
Dew point14°
Wed, 2853° / 30°0
53 °
Lake Ivanhoe, Wednesday, 28 October
Overcast. High 53°, low 30°.
Pressure30.00 inHg
Wind18.9 mph SW
Humidity50%
Visibility—
Dew point31°
Thu, 2947° / 38°0.04
47 °
Lake Ivanhoe, Thursday, 29 October
Light rain. High 47°, low 38°.
Pressure30.09 inHg
Wind10.5 mph NW
Humidity47%
Visibility—
Dew point26°
Fri, 3040° / 28°0
40 °
Lake Ivanhoe, Friday, 30 October
Clear. High 40°, low 28°.
Pressure30.45 inHg
Wind18.1 mph NW
Humidity35%
Visibility—
Dew point13°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 3154° / 43°0.09
54 °
Lake Ivanhoe, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high54°
Average low43°
Average precipitation0.09 in
Chance of precipitation40%
Record high71° (1974)
Record low26° (2019)
Sun, 0153° / 41°0.15
53 °
Lake Ivanhoe, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high53°
Average low41°
Average precipitation0.15 in
Chance of precipitation43%
Record high72° (2016)
Record low21° (2019)
Mon, 0252° / 40°0.12
52 °
Lake Ivanhoe, Monday, 2 November
Climate normal for this date — 60-year average.
Average high52°
Average low40°
Average precipitation0.12 in
Chance of precipitation40%
Record high72° (1961)
Record low22° (1991)
Tue, 0351° / 39°0.05
51 °
Lake Ivanhoe, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.05 in
Chance of precipitation27%
Record high70° (1987)
Record low17° (1991)
Wed, 0451° / 40°0.09
51 °
Lake Ivanhoe, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.09 in
Chance of precipitation28%
Record high69° (2015)
Record low14° (1991)
Thu, 0551° / 39°0.11
51 °
Lake Ivanhoe, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.11 in
Chance of precipitation30%
Record high71° (1978)
Record low19° (1991)
Fri, 0650° / 38°0.08
50 °
Lake Ivanhoe, Friday, 6 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.08 in
Chance of precipitation27%
Record high70° (1975)
Record low20° (1991)
Sat, 0750° / 38°0.04
50 °
Lake Ivanhoe, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.04 in
Chance of precipitation18%
Record high68° (2020)
Record low12° (1991)
Sun, 0849° / 38°0.04
49 °
Lake Ivanhoe, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high49°
Average low38°
Average precipitation0.04 in
Chance of precipitation17%
Record high70° (2020)
Record low14° (1991)
Mon, 0949° / 38°0.1
49 °
Lake Ivanhoe, Monday, 9 November
Climate normal for this date — 60-year average.
Average high49°
Average low38°
Average precipitation0.1 in
Chance of precipitation30%
Record high72° (2020)
Record low20° (1991)
Tue, 1048° / 37°0.1
48 °
Lake Ivanhoe, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high48°
Average low37°
Average precipitation0.1 in
Chance of precipitation37%
Record high72° (2022)
Record low16° (2017)
Wed, 1146° / 34°0.06
46 °
Lake Ivanhoe, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high46°
Average low34°
Average precipitation0.06 in
Chance of precipitation28%
Record high68° (1964)
Record low14° (2019)
Thu, 1244° / 33°0.06
44 °
Lake Ivanhoe, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high44°
Average low33°
Average precipitation0.06 in
Chance of precipitation20%
Record high63° (1964)
Record low5° (2019)
Fri, 1345° / 33°0.04
45 °
Lake Ivanhoe, Friday, 13 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.04 in
Chance of precipitation20%
Record high67° (1999)
Record low8° (2019)
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 Lake Ivanhoe, 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 Lake Ivanhoe, 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.