Monthly outlook for Isaar, WI: average high 62.4°, average low 43.3°. That is 3.4° above the climate normal for October. Precipitation is expected on 2 days (about 1.3 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 12 October (80.9°), the coolest 18 October (27.1°).
62.4°/43.3°
Average high / low
+3.4°
Above normal
2 / 5
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
63.1°
57.6°
+3°
19 October – 28 October
61.3°
53.5°
+4.4°
29 October – 7 November
at normal
49.2°
—
October records over 66 years
86°3 October 2025All-time high
21°30 October 1988All-time low
Climate normals and records are computed from the nearest reference point — Black Creek (11 mi).
Sat, 1077° / 54°0
77 °
Isaar, Saturday, 10 October
Clear. High 77°, low 54°.
Pressure29.97 inHg
Wind14.1 mph S
Humidity53%
Visibility6.2 mi
Dew point55°
Sun, 1176° / 53°0
76 °
Isaar, Sunday, 11 October
Clear. High 76°, low 53°.
Pressure29.88 inHg
Wind8.4 mph S
Humidity55%
Visibility6.2 mi
Dew point55°
Mon, 1281° / 60°0.02
81 °
Isaar, Monday, 12 October
Light rain. High 81°, low 60°.
Pressure29.71 inHg
Wind6.6 mph SW
Humidity60%
Visibility6.2 mi
Dew point61°
Tue, 1359° / 54°0.72
59 °
Isaar, Tuesday, 13 October
Heavy rain. High 59°, low 54°.
Pressure29.88 inHg
Wind8.7 mph N
Humidity83%
Visibility6.2 mi
Dew point52°
Wed, 1461° / 50°0
61 °
Isaar, Wednesday, 14 October
Overcast. High 61°, low 50°.
Pressure30.15 inHg
Wind7.4 mph NE
Humidity58%
Visibility—
Dew point44°
Thu, 1560° / 45°0.46
60 °
Isaar, Thursday, 15 October
Rain. High 60°, low 45°.
Pressure30.00 inHg
Wind17.1 mph SE
Humidity92%
Visibility—
Dew point47°
Fri, 1662° / 37°0.03
62 °
Isaar, Friday, 16 October
Light rain. High 62°, low 37°.
Pressure29.71 inHg
Wind23.2 mph W
Humidity48%
Visibility—
Dew point29°
Sat, 1742° / 31°0.02
42 °
Isaar, Saturday, 17 October
Light rain. High 42°, low 31°.
Pressure30.27 inHg
Wind20.1 mph N
Humidity49%
Visibility—
Dew point24°
Sun, 1847° / 27°0
47 °
Isaar, Sunday, 18 October
Clear. High 47°, low 27°.
Pressure30.47 inHg
Wind10 mph SW
Humidity32%
Visibility—
Dew point15°
Mon, 1954° / 32°0
54 °
Isaar, Monday, 19 October
Overcast. High 54°, low 32°.
Pressure30.33 inHg
Wind11.5 mph SW
Humidity40%
Visibility—
Dew point26°
Tue, 2058° / 37°0
58 °
Isaar, Tuesday, 20 October
Overcast. High 58°, low 37°.
Pressure30.39 inHg
Wind7.6 mph S
Humidity47%
Visibility—
Dew point35°
Wed, 2166° / 41°0
66 °
Isaar, Wednesday, 21 October
Clear. High 66°, low 41°.
Pressure30.15 inHg
Wind17.6 mph SW
Humidity40%
Visibility—
Dew point36°
Thu, 2260° / 43°0
60 °
Isaar, Thursday, 22 October
Clear. High 60°, low 43°.
Pressure30.09 inHg
Wind10.6 mph NW
Humidity35%
Visibility—
Dew point29°
Fri, 2360° / 38°0
60 °
Isaar, Friday, 23 October
Clear. High 60°, low 38°.
Pressure30.03 inHg
Wind7.3 mph S
Humidity34%
Visibility—
Dew point28°
Sat, 2470° / 46°0.03
70 °
Isaar, Saturday, 24 October
Light rain. High 70°, low 46°.
Pressure29.83 inHg
Wind16.8 mph W
Humidity53%
Visibility—
Dew point48°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2553° / 39°0.06
53 °
Isaar, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.06 in
Chance of precipitation27%
Record high73° (1989)
Record low26° (2020)
Mon, 2652° / 39°0.06
52 °
Isaar, Monday, 26 October
Climate normal for this date — 60-year average.
Average high52°
Average low39°
Average precipitation0.06 in
Chance of precipitation18%
Record high73° (1989)
Record low23° (1962)
Tue, 2753° / 38°0.07
53 °
Isaar, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.07 in
Chance of precipitation25%
Record high70° (1989)
Record low22° (2020)
Wed, 2851° / 38°0.08
51 °
Isaar, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.08 in
Chance of precipitation23%
Record high67° (1974)
Record low24° (1967)
Thu, 2951° / 37°0.06
51 °
Isaar, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.06 in
Chance of precipitation25%
Record high80° (2024)
Record low24° (1988)
Fri, 3053° / 38°0.09
53 °
Isaar, Friday, 30 October
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.09 in
Chance of precipitation27%
Record high78° (2024)
Record low21° (1988)
Sat, 3151° / 39°0.09
51 °
Isaar, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.09 in
Chance of precipitation37%
Record high67° (1971)
Record low26° (1996)
Sun, 0150° / 37°0.17
50 °
Isaar, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high50°
Average low37°
Average precipitation0.17 in
Chance of precipitation30%
Record high69° (1990)
Record low22° (2023)
Mon, 0249° / 36°0.12
49 °
Isaar, Monday, 2 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.12 in
Chance of precipitation27%
Record high69° (1990)
Record low18° (1991)
Tue, 0348° / 35°0.06
48 °
Isaar, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.06 in
Chance of precipitation18%
Record high70° (2022)
Record low16° (1991)
Wed, 0448° / 36°0.08
48 °
Isaar, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high48°
Average low36°
Average precipitation0.08 in
Chance of precipitation23%
Record high70° (2008)
Record low15° (1991)
Thu, 0548° / 35°0.09
48 °
Isaar, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.09 in
Chance of precipitation28%
Record high67° (2015)
Record low18° (1991)
Fri, 0647° / 34°0.09
47 °
Isaar, Friday, 6 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.09 in
Chance of precipitation28%
Record high69° (2020)
Record low13° (1991)
Sat, 0747° / 33°0.04
47 °
Isaar, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.04 in
Chance of precipitation20%
Record high69° (2020)
Record low8° (1991)
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 Isaar, 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 Isaar, 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.