Monthly outlook for Green Bay, WI: average high 57.7°, average low 42.3°. That is 2.7° above the climate normal for October. Precipitation is expected on 2 days (about 0.2 inches), against a normal of 5 days and 1.4 inches. The warmest day looks like 21 October (65.5°), the coolest 30 October (29.4°).
57.7°/42.3°
Average high / low
+2.7°
Above normal
2 / 5
Wet days / normal
0.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
19 October – 28 October
59.6°
53.9°
+3.1°
29 October – 7 November
54.5°
49.7°
+2.6°
8 November – 17 November
at normal
43.9°
—
October records over 66 years
86.4°1 October 2023All-time high
22.3°30 October 1988All-time low
Tue, 2065° / 41°0
65 °
Green Bay, Tuesday, 20 October
Partly cloudy. High 65°, low 41°.
Pressure30.42 inHg
Wind0.9 mph SE
Humidity85%
Visibility0.7 mi
Dew point51°
Wed, 2166° / 45°0
66 °
Green Bay, Wednesday, 21 October
Clear. High 66°, low 45°.
Pressure30.24 inHg
Wind6 mph SW
Humidity68%
Visibility6.2 mi
Dew point50°
Thu, 2260° / 47°0
60 °
Green Bay, Thursday, 22 October
Mostly clear. High 60°, low 47°.
Pressure30.36 inHg
Wind4.8 mph NE
Humidity74%
Visibility6.2 mi
Dew point50°
Fri, 2363° / 44°0
63 °
Green Bay, Friday, 23 October
Clear. High 63°, low 44°.
Pressure30.36 inHg
Wind8 mph SE
Humidity59%
Visibility—
Dew point45°
Sat, 2463° / 50°0
63 °
Green Bay, Saturday, 24 October
Overcast. High 63°, low 50°.
Pressure30.39 inHg
Wind13 mph S
Humidity53%
Visibility—
Dew point44°
Sun, 2564° / 52°0
64 °
Green Bay, Sunday, 25 October
Overcast. High 64°, low 52°.
Pressure30.09 inHg
Wind18.3 mph W
Humidity41%
Visibility—
Dew point39°
Mon, 2663° / 43°0
63 °
Green Bay, Monday, 26 October
Clear. High 63°, low 43°.
Pressure30.12 inHg
Wind11.5 mph SW
Humidity39%
Visibility—
Dew point33°
Tue, 2748° / 40°0.17
48 °
Green Bay, Tuesday, 27 October
Rain. High 48°, low 40°.
Pressure30.18 inHg
Wind16 mph N
Humidity50%
Visibility—
Dew point28°
Wed, 2842° / 30°0
42 °
Green Bay, Wednesday, 28 October
Partly cloudy. High 42°, low 30°.
Pressure30.42 inHg
Wind12.1 mph N
Humidity40%
Visibility—
Dew point16°
Thu, 2944° / 30°0
44 °
Green Bay, Thursday, 29 October
Partly cloudy. High 44°, low 30°.
Pressure30.36 inHg
Wind7.5 mph W
Humidity32%
Visibility—
Dew point13°
Fri, 3047° / 29°0
47 °
Green Bay, Friday, 30 October
Clear. High 47°, low 29°.
Pressure30.47 inHg
Wind9.9 mph S
Humidity32%
Visibility—
Dew point16°
Sat, 3151° / 34°0
51 °
Green Bay, Saturday, 31 October
Overcast. High 51°, low 34°.
Pressure30.36 inHg
Wind19.1 mph SW
Humidity35%
Visibility—
Dew point22°
Sun, 0158° / 44°0.05
58 °
Green Bay, Sunday, 1 November
Light rain. High 58°, low 44°.
Pressure30.21 inHg
Wind13.6 mph SW
Humidity37%
Visibility—
Dew point30°
Mon, 0264° / 50°0
64 °
Green Bay, Monday, 2 November
Overcast. High 64°, low 50°.
Pressure29.97 inHg
Wind21.2 mph S
Humidity46%
Visibility—
Dew point41°
Tue, 0361° / 51°0
61 °
Green Bay, Tuesday, 3 November
Partly cloudy. High 61°, low 51°.
Pressure30.18 inHg
Wind21.8 mph SW
Humidity56%
Visibility—
Dew point43°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 0448° / 37°0.08
48 °
Green Bay, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high48°
Average low37°
Average precipitation0.08 in
Chance of precipitation28%
Record high71° (2008)
Record low16° (1991)
Thu, 0549° / 37°0.09
49 °
Green Bay, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.09 in
Chance of precipitation28%
Record high68° (2015)
Record low19° (1991)
Fri, 0648° / 36°0.09
48 °
Green Bay, Friday, 6 November
Climate normal for this date — 60-year average.
Average high48°
Average low36°
Average precipitation0.09 in
Chance of precipitation32%
Record high69° (1975)
Record low14° (1991)
Sat, 0747° / 35°0.03
47 °
Green Bay, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.03 in
Chance of precipitation18%
Record high67° (2020)
Record low8° (1991)
Sun, 0847° / 35°0.04
47 °
Green Bay, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.04 in
Chance of precipitation25%
Record high71° (2020)
Record low11° (1991)
Mon, 0946° / 35°0.09
46 °
Green Bay, Monday, 9 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.09 in
Chance of precipitation42%
Record high73° (2020)
Record low18° (2017)
Tue, 1045° / 34°0.13
45 °
Green Bay, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high45°
Average low34°
Average precipitation0.13 in
Chance of precipitation40%
Record high71° (2022)
Record low15° (2017)
Wed, 1144° / 32°0.05
44 °
Green Bay, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.05 in
Chance of precipitation33%
Record high66° (2022)
Record low14° (1986)
Thu, 1242° / 31°0.06
42 °
Green Bay, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high42°
Average low31°
Average precipitation0.06 in
Chance of precipitation27%
Record high60° (1964)
Record low10° (2019)
Fri, 1342° / 31°0.04
42 °
Green Bay, Friday, 13 November
Climate normal for this date — 60-year average.
Average high42°
Average low31°
Average precipitation0.04 in
Chance of precipitation22%
Record high65° (1999)
Record low7° (1986)
Sat, 1443° / 31°0.04
43 °
Green Bay, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.04 in
Chance of precipitation22%
Record high60° (2001)
Record low13° (2018)
Sun, 1544° / 32°0.04
44 °
Green Bay, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.04 in
Chance of precipitation22%
Record high64° (2001)
Record low18° (1982)
Mon, 1643° / 31°0.06
43 °
Green Bay, Monday, 16 November
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.06 in
Chance of precipitation18%
Record high62° (2023)
Record low19° (1989)
Tue, 1743° / 32°0.07
43 °
Green Bay, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high43°
Average low32°
Average precipitation0.07 in
Chance of precipitation23%
Record high64° (2016)
Record low11° (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 Green Bay, 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 Green Bay, 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.