Measurements:
°C
°F
Green Bay
56°F
NW 3 mph
Feels like: 56°F
Precip: 2%
World Resorts USA Green Bay Weather May Weather in Green Bay

Green Bay Weather: May

Average Day Temperature: 64.0°F
Average Night Temperature: 48.0°F
Sea Water Temperature: 55.7°F
Number of Sunny Days: 11 days
Sunshine Hours: 14.2 - 15.3 hours
Number of Rainy Days: 2 days
Precipitation Totals: 1.0 in

Air Temperature in May, °F

Select Year: 2026 2025 2024

The highest day temperature in May 2026 was 97°F. The lowest night temperature was 29°F. The average values for day and night temperatures during May were 67.5°F и 47.4°F respectivly.

Green Bay Water Sea Temperature in May, °F

Select Year: 2026 2025 2024

The average sea surface temperature in May 2026 for Green Bay was 56.0°F. The maximum and minimum values were 48.6°F and 66.8°F respectively.

Sunny, Cloudy and Gloomy days

You can expect various weather conditions during May. Be ready for sunny, cloudy or even gloomy days.

Precipitation Totals in May, in

Precipitation total in May for Green Bay is 1.0 in.

Wind Speed in May, mph

The average wind speed in May is 9.1 mph.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Green Bay in May is 8.2 hours.

Best Time to Visit Green Bay
The most sunny months:
August 15 days
July 14 days
October 13 days
The most warm months:
July 82.2 °F
August 80.9 °F
June 76.9 °F
Warmest sea temperature:
July 78.0 °F
August 76.4 °F
September 70.4 °F
The most cold months:
January 20.8 °F
February 24.3 °F
December 28.0 °F
The most rainy months:
June 3 days
April 3 days
September 2 days
The most windy months:
April 11 mph
March 11 mph
November 11 mph

Green Bay on the Weather Map

USA Resorts:
NAME
F°
Boston +58
Chicago +62
Hawaii +82
Houston +86
Las Vegas +92
Los Angeles +100
Maui +74
Miami +88
Myrtle Beach +70
New York +62
San Diego +84
San Francisco +66
Santa Monica +94
Sarasota +84
Washington +64
24 Hours Weather Forecast
Green Bay
Local time: 19:25
05 oct, monday
2100 46°F
N
10 mph
06 oct, tuesday
0000 46°F
N
9 mph
0300 52°F
N
11 mph
0600 52°F
N
12 mph
0900 56°F
N
16 mph
1200 68°F
NE
20 mph
1500 72°F
NE
21 mph
1800 68°F
NE
19 mph