The highest day temperature in July 2025 was 98°F. The lowest night temperature was 52°F. The average values for day and night temperatures during July were 85.7°F и 65.2°F respectivly.

The average sea surface temperature in July 2025 for Green Bay was 78.7°F. The maximum and minimum values were 75.6°F and 84.6°F respectively.

Most of the days in July are cloudy but you can also expect sunny or gloomy days.

Precipitation total in July for Green Bay is 1.2 in. It makes july one of the most rainy months of the year.

The average wind speed in July is 7.5 mph. It makes July the most windless month of the year for Green Bay.

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 July is 9.1 hours.