Green Bay weather by month

Check out Green Bay weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature in Green Bay (°F)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
23°F maximum daytime temperature in January in Green Bay23
28°F maximum daytime temperature in February in Green Bay28
39°F maximum daytime temperature in March in Green Bay39
54°F maximum daytime temperature in April in Green Bay54
66°F maximum daytime temperature in May in Green Bay66
75°F maximum daytime temperature in June in Green Bay75
81°F maximum daytime temperature in July in Green Bay81
77°F maximum daytime temperature in August in Green Bay77
70°F maximum daytime temperature in September in Green Bay70
57°F maximum daytime temperature in October in Green Bay57
43°F maximum daytime temperature in November in Green Bay43
28°F maximum daytime temperature in December in Green Bay28
Min temperature (night-time)
5°F minimum night-time temperature in January in Green Bay5
10°F minimum night-time temperature in February in Green Bay10
21°F minimum night-time temperature in March in Green Bay21
34°F minimum night-time temperature in April in Green Bay34
45°F minimum night-time temperature in May in Green Bay45
54°F minimum night-time temperature in June in Green Bay54
59°F minimum night-time temperature in July in Green Bay59
57°F minimum night-time temperature in August in Green Bay57
50°F minimum night-time temperature in September in Green Bay50
39°F minimum night-time temperature in October in Green Bay39
27°F minimum night-time temperature in November in Green Bay27
12°F minimum night-time temperature in December in Green Bay12
Heat & Humidity
No heat & humidity in January in Green Bay0
No heat & humidity in February in Green Bay0
No heat & humidity in March in Green Bay0
No heat & humidity in April in Green Bay0
No heat & humidity in May in Green Bay0
No heat & humidity in June in Green Bay0
Low heat & humidity in July in Green BayL
Low heat & humidity in August in Green BayL
No heat & humidity in September in Green Bay0
No heat & humidity in October in Green Bay0
No heat & humidity in November in Green Bay0
No heat & humidity in December in Green Bay0
Sea temperature
39°F sea temperature in January in Green Bay39
37°F sea temperature in February in Green Bay37
36°F sea temperature in March in Green Bay36
37°F sea temperature in April in Green Bay37
39°F sea temperature in May in Green Bay39
48°F sea temperature in June in Green Bay48
59°F sea temperature in July in Green Bay59
68°F sea temperature in August in Green Bay68
64°F sea temperature in September in Green Bay64
54°F sea temperature in October in Green Bay54
46°F sea temperature in November in Green Bay46
41°F sea temperature in December in Green Bay41

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & Daylight in Green Bay

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
9 hours of daylight per day in January in Green Bay9
10 hours of daylight per day in February in Green Bay10
12 hours of daylight per day in March in Green Bay12
14 hours of daylight per day in April in Green Bay14
15 hours of daylight per day in May in Green Bay15
15 hours of daylight per day in June in Green Bay15
15 hours of daylight per day in July in Green Bay15
14 hours of daylight per day in August in Green Bay14
12 hours of daylight per day in September in Green Bay12
11 hours of daylight per day in October in Green Bay11
10 hours of daylight per day in November in Green Bay10
9 hours of daylight per day in December in Green Bay9
UV Index (Maximum)
UV (maximum) index 1 (Low) in January in Green Bay1
UV (maximum) index 2 (Low) in February in Green Bay2
UV (maximum) index 3 (Moderate) in March in Green Bay3
UV (maximum) index 5 (Moderate) in April in Green Bay5
UV (maximum) index 7 (High) in May in Green Bay7
UV (maximum) index 8 (Very High) in June in Green Bay8
UV (maximum) index 8 (Very High) in July in Green Bay8
UV (maximum) index 7 (High) in August in Green Bay7
UV (maximum) index 5 (Moderate) in September in Green Bay5
UV (maximum) index 3 (Moderate) in October in Green Bay3
UV (maximum) index 2 (Low) in November in Green Bay2
UV (maximum) index 1 (Low) in December in Green Bay1

Rainfall in Green Bay

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
11 days with some rainfall in January in Green Bay11
8 days with some rainfall in February in Green Bay8
11 days with some rainfall in March in Green Bay11
11 days with some rainfall in April in Green Bay11
10 days with some rainfall in May in Green Bay10
10 days with some rainfall in June in Green Bay10
10 days with some rainfall in July in Green Bay10
10 days with some rainfall in August in Green Bay10
10 days with some rainfall in September in Green Bay10
10 days with some rainfall in October in Green Bay10
10 days with some rainfall in November in Green Bay10
11 days with some rainfall in December in Green Bay11
Average monthly rainfall (inches)
1.2 inches monthly rainfall in January in Green Bay1.2
1.1 inches monthly rainfall in February in Green Bay1.1
2.0 inches monthly rainfall in March in Green Bay2.0
2.5 inches monthly rainfall in April in Green Bay2.5
2.9 inches monthly rainfall in May in Green Bay2.9
3.3 inches monthly rainfall in June in Green Bay3.3
3.2 inches monthly rainfall in July in Green Bay3.2
3.5 inches monthly rainfall in August in Green Bay3.5
3.5 inches monthly rainfall in September in Green Bay3.5
2.2 inches monthly rainfall in October in Green Bay2.2
2.2 inches monthly rainfall in November in Green Bay2.2
1.6 inches monthly rainfall in December in Green Bay1.6

More about Green Bay

Green Bay by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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The climate guide for Wisconsin (Green Bay) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in Green Bay?

Green Bay has a cold climate with warm summers and some rainfall in all months.

Metric (°C)  |  Imperial (°F)

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Tropical storm risk: Green Bay, Wisconsin hurricane season

% of month affected by tropical storms
0
0
0
0
0
0
0
0
0
0
0
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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More about the USA

Compare Green Bay with the USA

Below the Green Bay chart shows average maximum daytime temperature for Green Bay, Wisconsin, USA and the USA (Washington).

Maximum daytime temperature (°F)

Green Bay, Wisconsin, USA
USA (Washington)
41
45
39
55
54
66
66
75
75
84
81
88
77
86
70
79
57
68
43
57
46
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
23
28
28

Metric (°C)  |  Imperial (°F)

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