Monthly outlook for Portland, WI: average high 60.9°, average low 48.1°. That is 5.1° above the climate normal for October. Precipitation is expected on 5 days (about 1.7 inches), against a normal of 4 days and 1.3 inches. The warmest day looks like 24 October (71.6°), the coolest 30 October (42.7°).
60.9°/48.1°
Average high / low
+5.1°
Above normal
5 / 4
Wet days / normal
1.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
24 October – 2 November
64.6°
53.3°
+6.3°
3 November – 12 November
54.7°
47.6°
+4°
13 November – 22 November
at normal
43.3°
—
October records over 66 years
84.9°3 October 2025All-time high
20.7°30 October 1988All-time low
Climate normals and records are computed from the nearest reference point — Reeseville (10 mi).
Sun, 2571° / 52°0
71 °
Portland, Sunday, 25 October
Overcast. High 71°, low 52°.
Pressure30.36 inHg
Wind6.9 mph SW
Humidity61%
Visibility6.2 mi
Dew point51°
Mon, 2660° / 47°0
60 °
Portland, Monday, 26 October
Overcast. High 60°, low 47°.
Pressure30.39 inHg
Wind8.5 mph NE
Humidity47%
Visibility6.2 mi
Dew point38°
Tue, 2767° / 47°0
67 °
Portland, Tuesday, 27 October
Partly cloudy. High 67°, low 47°.
Pressure30.24 inHg
Wind8.9 mph SE
Humidity70%
Visibility6.2 mi
Dew point52°
Wed, 2869° / 55°0
69 °
Portland, Wednesday, 28 October
Clear. High 69°, low 55°.
Pressure30.06 inHg
Wind13.6 mph SW
Humidity63%
Visibility6.2 mi
Dew point52°
Thu, 2962° / 48°0.05
62 °
Portland, Thursday, 29 October
Light rain. High 62°, low 48°.
Pressure30.21 inHg
Wind6.2 mph NW
Humidity46%
Visibility—
Dew point39°
Fri, 3063° / 43°0.02
63 °
Portland, Friday, 30 October
Light rain. High 63°, low 43°.
Pressure30.18 inHg
Wind11.1 mph SE
Humidity73%
Visibility—
Dew point46°
Sat, 3166° / 56°0.2
66 °
Portland, Saturday, 31 October
Rain. High 66°, low 56°.
Pressure29.97 inHg
Wind17.4 mph S
Humidity51%
Visibility—
Dew point46°
Sun, 0163° / 56°0.32
63 °
Portland, Sunday, 1 November
Rain. High 63°, low 56°.
Pressure29.62 inHg
Wind21.3 mph S
Humidity86%
Visibility—
Dew point57°
Mon, 0253° / 46°0.91
53 °
Portland, Monday, 2 November
Rain. High 53°, low 46°.
Pressure29.50 inHg
Wind19.8 mph N
Humidity93%
Visibility—
Dew point50°
Tue, 0352° / 48°0.22
52 °
Portland, Tuesday, 3 November
Light rain. High 52°, low 48°.
Pressure29.68 inHg
Wind22.3 mph N
Humidity89%
Visibility—
Dew point48°
Wed, 0448° / 46°0
48 °
Portland, Wednesday, 4 November
Overcast. High 48°, low 46°.
Pressure29.77 inHg
Wind17 mph N
Humidity72%
Visibility—
Dew point39°
Thu, 0552° / 45°0
52 °
Portland, Thursday, 5 November
Overcast. High 52°, low 45°.
Pressure30.03 inHg
Wind4.4 mph E
Humidity62%
Visibility—
Dew point37°
Fri, 0656° / 43°0
56 °
Portland, Friday, 6 November
Overcast. High 56°, low 43°.
Pressure30.21 inHg
Wind3.1 mph W
Humidity60%
Visibility—
Dew point40°
Sat, 0760° / 44°0
60 °
Portland, Saturday, 7 November
Clear. High 60°, low 44°.
Pressure30.24 inHg
Wind6.6 mph SW
Humidity61%
Visibility—
Dew point43°
Sun, 0862° / 46°0
62 °
Portland, Sunday, 8 November
Clear. High 62°, low 46°.
Pressure30.09 inHg
Wind10.1 mph SW
Humidity61%
Visibility—
Dew point45°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0948° / 35°0.1
48 °
Portland, Monday, 9 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.1 in
Chance of precipitation35%
Record high73° (2020)
Record low19° (1991)
Tue, 1046° / 34°0.11
46 °
Portland, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high46°
Average low34°
Average precipitation0.11 in
Chance of precipitation35%
Record high71° (2022)
Record low13° (2017)
Wed, 1144° / 31°0.07
44 °
Portland, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.07 in
Chance of precipitation28%
Record high67° (1964)
Record low13° (2019)
Thu, 1243° / 30°0.06
43 °
Portland, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high43°
Average low30°
Average precipitation0.06 in
Chance of precipitation28%
Record high63° (1964)
Record low4° (2019)
Fri, 1344° / 30°0.04
44 °
Portland, Friday, 13 November
Climate normal for this date — 60-year average.
Average high44°
Average low30°
Average precipitation0.04 in
Chance of precipitation23%
Record high66° (1999)
Record low6° (1986)
Sat, 1444° / 31°0.04
44 °
Portland, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.04 in
Chance of precipitation22%
Record high65° (1971)
Record low11° (1995)
Sun, 1544° / 32°0.05
44 °
Portland, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.05 in
Chance of precipitation25%
Record high67° (2025)
Record low11° (1995)
Mon, 1644° / 31°0.04
44 °
Portland, Monday, 16 November
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.04 in
Chance of precipitation20%
Record high61° (1988)
Record low20° (1989)
Tue, 1745° / 32°0.08
45 °
Portland, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.08 in
Chance of precipitation25%
Record high68° (2016)
Record low13° (2005)
Wed, 1844° / 32°0.08
44 °
Portland, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.08 in
Chance of precipitation28%
Record high63° (2016)
Record low11° (2014)
Thu, 1944° / 31°0.05
44 °
Portland, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.05 in
Chance of precipitation27%
Record high61° (1985)
Record low15° (2014)
Fri, 2042° / 31°0.07
42 °
Portland, Friday, 20 November
Climate normal for this date — 60-year average.
Average high42°
Average low31°
Average precipitation0.07 in
Chance of precipitation28%
Record high61° (1982)
Record low11° (2022)
Sat, 2141° / 29°0.09
41 °
Portland, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high41°
Average low29°
Average precipitation0.09 in
Chance of precipitation25%
Record high63° (1990)
Record low8° (1964)
Sun, 2241° / 28°0.03
41 °
Portland, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high41°
Average low28°
Average precipitation0.03 in
Chance of precipitation15%
Record high60° (2012)
Record low7° (2015)
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 Portland, 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 Portland, 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.