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 (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
-5°C maximum daytime temperature in January in Green Bay-5
-2°C maximum daytime temperature in February in Green Bay-2
4°C maximum daytime temperature in March in Green Bay4
12°C maximum daytime temperature in April in Green Bay12
19°C maximum daytime temperature in May in Green Bay19
24°C maximum daytime temperature in June in Green Bay24
27°C maximum daytime temperature in July in Green Bay27
25°C maximum daytime temperature in August in Green Bay25
21°C maximum daytime temperature in September in Green Bay21
14°C maximum daytime temperature in October in Green Bay14
6°C maximum daytime temperature in November in Green Bay6
-2°C maximum daytime temperature in December in Green Bay-2
Min temperature (night-time)
-15°C minimum night-time temperature in January in Green Bay-15
-12°C minimum night-time temperature in February in Green Bay-12
-6°C minimum night-time temperature in March in Green Bay-6
1°C minimum night-time temperature in April in Green Bay1
7°C minimum night-time temperature in May in Green Bay7
12°C minimum night-time temperature in June in Green Bay12
15°C minimum night-time temperature in July in Green Bay15
14°C minimum night-time temperature in August in Green Bay14
10°C minimum night-time temperature in September in Green Bay10
4°C minimum night-time temperature in October in Green Bay4
-3°C minimum night-time temperature in November in Green Bay-3
-11°C minimum night-time temperature in December in Green Bay-11
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
4°C sea temperature in January in Green Bay4
3°C sea temperature in February in Green Bay3
2°C sea temperature in March in Green Bay2
3°C sea temperature in April in Green Bay3
4°C sea temperature in May in Green Bay4
9°C sea temperature in June in Green Bay9
15°C sea temperature in July in Green Bay15
20°C sea temperature in August in Green Bay20
18°C sea temperature in September in Green Bay18
12°C sea temperature in October in Green Bay12
8°C sea temperature in November in Green Bay8
5°C sea temperature in December in Green Bay5

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 (mm)
30 mm monthly rainfall in January in Green Bay30
27 mm monthly rainfall in February in Green Bay27
52 mm monthly rainfall in March in Green Bay52
64 mm monthly rainfall in April in Green Bay64
73 mm monthly rainfall in May in Green Bay73
85 mm monthly rainfall in June in Green Bay85
81 mm monthly rainfall in July in Green Bay81
89 mm monthly rainfall in August in Green Bay89
88 mm monthly rainfall in September in Green Bay88
57 mm monthly rainfall in October in Green Bay57
56 mm monthly rainfall in November in Green Bay56
40 mm monthly rainfall in December in Green Bay40

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 / mm)  |  Imperial (°F / inches)

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More about the USA

Compare Green Bay with the UK

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

Maximum daytime temperature (°C)

Green Bay, Wisconsin, USA
UK (London)
7
7
4
10
12
13
19
17
24
20
27
22
25
22
21
19
14
15
6
10
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
-5
-2
-2

Metric (°C / mm)  |  Imperial (°F / inches)

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