Measurements:
°C
°F
Green Bay
10°F
NE 18 mph
Feels like: -8°F
Precip: 0%
World Resorts USA Green Bay Weather January Weather in Green Bay

Green Bay Weather: January

Average Day Temperature: 21.6°F
Average Night Temperature: 14.7°F
Sea Water Temperature: 30.4°F
Number of Sunny Days: 5 days
Sunshine Hours: 8.9 - 9.8 hours
Number of Rainy Days: 0 days
Precipitation Totals: 0.4 in

Air Temperature in January, °F

Select Year: 2025 2024 2023

The highest day temperature in January 2025 was 39°F. The lowest night temperature was -17°F. The average values for day and night temperatures during January were 19.4°F и 10.3°F respectivly.

Green Bay Water Sea Temperature in January, °F

Select Year: 2025 2024 2023

The average sea surface temperature in January 2025 for Green Bay was 30.2°F. The maximum and minimum values were 30.0°F and 30.8°F respectively.

Sunny, Cloudy and Gloomy days

Most of the days in January are gloomy but you can also expect sunny days.

Precipitation Totals in January, in

Precipitation total in January for Green Bay is 0.4 in. It makes january one of the least rainy months of the year.

Wind Speed in January, mph

The average wind speed in January is 9.4 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 January is 3.4 hours.

Best Time to Visit Green Bay
The most sunny months:
August 14 days
September 13 days
October 13 days
The most warm months:
July 81.2 °F
August 80.6 °F
June 76.5 °F
Warmest sea temperature:
July 77.6 °F
August 76.2 °F
September 70.1 °F
The most cold months:
January 21.6 °F
February 23.1 °F
December 29.0 °F
The most rainy months:
June 3 days
April 3 days
July 2 days
The most windy months:
April 11 mph
November 11 mph
March 11 mph

Green Bay on the Weather Map

USA Resorts:
NAME
Chicago -2
Hawaii +78
Honolulu +78
Houston +44
Las Vegas +40
Los Angeles +52
Maui +72
Miami +72
Miami Beach +80
New York +20
San Diego +54
San Francisco +46
Sarasota +62
Tampa +62
Washington +28
24 Hours Weather Forecast
Green Bay
Local time: 03:20
05 dec, friday
0600 10°F
NE
16 mph
0900 14°F
NE
14 mph
1200 18°F
NE
12 mph
1500 22°F
NE
12 mph
1800 22°F
NE
11 mph
2100 24°F
NE
12 mph
06 dec, saturday
0000 24°F
E
12 mph
0300 20°F
E
9 mph