Annual mean 8°C · wettest around March · prevailing wind W
Warmest
25.7 °C
Coldest
-5.3 °C
Wettest
24%
Windiest
5.8 m/s
Prevailing
W
4.6 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Green Bay over the whole year is 8°C. July is the hottest month, with highs of about 26°C; January is the coldest, with lows of about -7°C. Green Bay has no sharply defined rainy season: the chance of rain on a given day runs from 18% in January, the driest month, to 22% in March, the wettest. Winds in Green Bay are highest in April, averaging 4.3 m/s (15 km/h), and lightest in August, at 2.6 m/s (9 km/h). The prevailing wind is from the W. The clearest skies in Green Bay come in July, when the sky is typically 30% covered; December is the cloudiest month, at 65%.
Month by month Green Bay climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
-5°C
-7°C
-10°C
18%
63%
4.0 m/s
0
0
0
February
-3°C
-7°C
-9°C
19%
47%
4.0 m/s
0
0
3
March
3°C
-2°C
-3°C
22%
49%
4.1 m/s
0
0
8
April
9°C
3°C
4°C
22%
53%
4.3 m/s
9
0
34
May
17°C
10°C
14°C
21%
42%
3.8 m/s
42
8
67
June
23°C
17°C
22°C
21%
37%
3.4 m/s
70
31
54
July
26°C
19°C
26°C
19%
30%
2.7 m/s
64
58
29
August
24°C
17°C
24°C
19%
35%
2.6 m/s
71
48
38
September
21°C
13°C
20°C
19%
37%
2.9 m/s
71
22
67
October
14°C
7°C
9°C
20%
49%
3.5 m/s
27
2
56
November
5°C
1°C
-0°C
20%
53%
3.9 m/s
6
0
18
December
-1°C
-4°C
-7°C
20%
65%
3.9 m/s
0
0
2
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Green Bay weather by season
Year round, Green Bay has days of about -5°C at their warmest in January, its coolest month, and 26°C in July, its warmest; the coolest hours of the day run from -7°C to 19°C through the year, and the average temperature over the year is 8°C around the clock. Rain is most likely around March and least likely around January. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Green Bay weather in winterDecember to February
High -3°CLow -6°CRain 19%
Winter in Green Bay has typical daily highs of about -3°C and lows of about -6°C, with a 19% chance of rain on a given day.
Green Bay weather in springMarch to May
High 10°CLow 4°CRain 21%
Spring in Green Bay has typical daily highs of about 10°C and lows of about 4°C, with a 21% chance of rain on a given day.
Green Bay weather in summerJune to August
High 24°CLow 17°CRain 20%
Summer in Green Bay has typical daily highs of about 24°C and lows of about 17°C, with a 20% chance of rain on a given day.
Green Bay weather in autumnSeptember to November
High 13°CLow 7°CRain 20%
Autumn in Green Bay has typical daily highs of about 13°C and lows of about 7°C, with a 20% chance of rain on a given day.
When is the rainy season in Green Bay?
Green Bay has no sharply defined rainy season: the chance of rain on a given day runs from 18% in January, the driest month, to 22% in March, the wettest.
What time of year is Green Bay windiest?
Winds in Green Bay are highest in April, averaging 4.3 m/s (15 km/h), and lightest in August, at 2.6 m/s (9 km/h). The prevailing wind is from the W.
What is the average temperature in Green Bay year round?
The average temperature in Green Bay over the whole year is 8°C. July is the hottest month, with highs of about 26°C; January is the coldest, with lows of about -7°C.