July weather forecast
Green Bay, WI

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The sun setting over Green Bay in Wisconsin
The sun setting over Green Bay in Wisconsin

Weather in July

July is when Green Bay experiences the height of summer, with temperatures soaring to an average high of 78.1°F (25.6°C) making it the hottest month of the year. Despite the heat, the city maintains relatively high humidity levels, making the heat slightly more oppressive. The change in season also translates into brighter days with an impressive average of 10.1 hours of sunshine a day. This month is perfect for enjoying the myriad of beaches as sea temperatures rise to a comfortable 59.5°F (15.3°C). To sum it up, July is all about clear skies, warm days, and constant summer fun.

Temperature

Green Bay experiences its highest average temperatures in July, reaching a peak of 78.1°F (25.6°C) and a minimum of 60.4°F (15.8°C).

Humidity

In July, the average relative humidity is 79%.

Rainfall

In July, the rain falls for 15.6 days. Throughout July, 2.56" (65mm) of precipitation is accumulated. Throughout the year, there are 130.8 rainfall days, and 24.8" (630mm) of precipitation is accumulated.

Snowfall

In Green Bay, snow does not fall in June through September.

Ocean temperature

In Green Bay, in July, the average water temperature is 59.5°F (15.3°C).
Note: In water with a temperature of 59.5°F (15.3°C), most individuals do not find swimming enjoyable. As the temperature falls from 69.8°F (21°C) to 59°F (15°C), breathing control becomes more difficult.

Daylight

The average length of the day in July is 15h and 9min.
On the first day of July, sunrise is at 5:11 am and sunset at 8:40 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 8:18 pm CDT.

Sunshine

With an average of 10.1h of sunshine, July has the most sunshine of the year.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index of 5 during July translates into the following directions:
Exercise prevention - Protecting skin and eyes from harm is required. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Updated: Aug 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the hottest?

July stands out as Green Bay's warmest month, with temperatures ranging between an average high of 78.1°F (25.6°C) and a low of 60.4°F (15.8°C).

What is the average July temperature?

The high-temperature, in July, in Green Bay, records 78.1°F (25.6°C), while the low-temperature is 60.4°F (15.8°C).

What is the average humidity in July?

In Green Bay, the average relative humidity in July is 79%.

How much does it rain in July?

In Green Bay, during July, the rain falls for 15.6 days and regularly aggregates up to 2.56" (65mm) of precipitation.

When it does not snow?

In Green Bay, Wisconsin, snow does not fall in June through September.

What is the ocean temperature in July?

In July, the average ocean temperature is 59.5°F (15.3°C). For most, swimming in 59.5°F (15.3°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

What is the average length of the day in July?

In Green Bay, the average day length in July is 15h and 9min.

When are sunrise and sunset in July?

In July, on the first day of the month, sunrise is at 5:11 am and sunset at 8:40 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 8:18 pm CDT.

What month has the most sunshine?

The month with the most sunshine is July, with an average of 10.1h of sunshine.

How long on average sun shines in July?

The average sunshine duration in July is 10.1h.

What is the month with the highest UV index?

The months with the highest UV index in Green Bay are June through August, with an average maximum UV index of 5.

What is the UV index reading in July?

In Green Bay, the average daily maximum UV index in July is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Green Bay, WI

Average temperature in July - Green Bay, WI
  • Average high temperature in July: 78.1°F

The warmest month (with the highest average high temperature) is July (78.1°F).
The month with the lowest average high temperature is January (22.6°F).

  • Average low temperature in July: 60.4°F

The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).

Average pressure in July
Green Bay, WI

Average pressure in July - Green Bay, WI
  • Average pressure in July: 29.95"Hg

The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in July
Green Bay, WI

Average wind speed in July - Green Bay, WI
  • Average wind speed in July: 7.2mph

The windiest months (with the highest average wind speed) are January and February (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (7.2mph).

Average humidity in July
Green Bay, WI

Average humidity in July - Green Bay, WI
  • Average humidity in July: 79%

The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are April and May (76%).

Average rainfall in July
Green Bay, WI

Average rainfall in July - Green Bay, WI
  • Average rainfall in July: 2.56"

The wettest month (with the highest rainfall) is May (3.31").
The driest month (with the least rainfall) is January (1.18").

Average rainfall days in July
Green Bay, WI

Average rainfall days in July - Green Bay, WI
  • Average rainfall days in July: 15.6 days

The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is February (3.7 days).

Average snowfall in July
Green Bay, WI

Average snowfall in July - Green Bay, WI
  • Average snowfall in July: 0"

The month with the highest snowfall is February (5.79").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in July
Green Bay, WI

Average snowfall days in July - Green Bay, WI
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (15.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average sea temperature in July
Green Bay, WI

Average sea temperature in July - Green Bay, WI
  • Average sea temperature in July: 59.5°F

The best month for swimming (with the highest average sea temperature) is August (67.6°F).
The coldest month (with the lowest average sea temperature) is February (36.1°F).

Average daylight in July /
Average sunshine in July
Green Bay, WI

Average daylight in July / Average sunshine in July - Green Bay, WI
  • Average daylight in July: 15h and 1min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in July: 10h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 24min).

Average sunshine days in July
Green Bay, WI

Average sunshine days in July - Green Bay, WI
  • Average sunshine days in July: 12.3 days

The months with the most sunshine days are September and November (17 days).
The month with the least sunshine days is April (11.6 days).

Average UV index in July
Green Bay, WI

Average UV index in July - Green Bay, WI
  • Average UV index in July: 5

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).

Average cloud cover in July
Green Bay, WI

Average cloud cover in July - Green Bay, WI
  • Average cloud cover in July: 33

The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 33).

Average visibility in July
Green Bay, WI

Average visibility in July - Green Bay, WI
  • Average visibility in July: 6mi

The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).

Green Bay, Wisconsin, USA

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