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 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. To sum it up, July in Green Bay is all about clear skies, warm days, and constant summer fun.

Temperature

Green Bay's July weather, with an average high temperature of 78.1°F and an average low temperature of 60.4°F, tends to be the warmest of the year.

Humidity

The average relative humidity in July is 79%.

Rainfall

In Green Bay, during July, the rain falls for 15.6 days and regularly aggregates up to 2.56" of precipitation. Throughout the year, there are 130.8 rainfall days, and 24.8" 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.
Note: Swimming in 59.5°F does not offer a pleasant experience for most individuals. The act of controlling one's breathing becomes progressively difficult as the water temperature goes under 69.8°F.

Daylight

In July, the average length of the day in Green Bay 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 5:37 am and sunset at 8:19 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 in Green Bay are June through August, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index of 5 in July interprets into the following recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
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FAQ

What time of the year is the hottest in Green Bay?

In Green Bay, the average temperatures in July are the highest, with a peak at 78.1°F and a low of 60.4°F.

What is the usual temperature for Green Bay in July?

July temperatures in Green Bay vary between a high-temperature of 78.1°F and a low-temperature of 60.4°F.

What is the average humidity in July in Green Bay?

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

How much does it rain in Green Bay in July?

In Green Bay, in July, during 15.6 rainfall days, 2.56" of precipitation is typically accumulated.

When it does not snow in Green Bay?

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

What is the ocean temperature in July in Green Bay?

In Green Bay, in July, the average water temperature is 59.5°F. For swimming, a surface water temperature of 59.5°F is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F.

How many hours of daylight does Green Bay have in July?

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

When are sunrise and sunset in July in Green Bay?

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, in Green Bay, sunrise is at 5:37 am and sunset at 8:19 pm CDT.

What month has the most sunshine in Green Bay?

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

How long on average sun shines in July in Green Bay?

In July, the average sunshine duration in Green Bay, Wisconsin, is 10.1h.

When is the highest UV index in Green Bay?

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 intensity in July in Green Bay?

In Green Bay, the average daily maximum UV index in July is 5. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJFMAMJJulyASOND
Jun
July
Aug
Average high temperature
72.1°F
78.1°F
77°F
Average low temperature
54.1°F
60.4°F
59.4°F
Average pressure
29.91"Hg
29.95"Hg
29.96"Hg
Average wind speed
7.7mph
7.2mph
7.2mph
Average max. wind speed
8.3mph
7.8mph
7.8mph
Average wind speed gusts
12.7mph
11.9mph
11.9mph
Average humidity
80%
79%
79%
Average rainfall
2.68"
2.56"
1.93"
Average rainfall days
15
15.6
14.3
Average snowfall
0"
0"
0"
Average snowfall days
0
0
0
Average sea temperature
47.7°F
59.5°F
67.6°F
Average daylight
15h 3min
15h 1min
14h 0min
Average sunshine
9h 2min
10h 1min
9h 5min
Average sunshine days
13.6
12.3
13.9
Average UV index
5
5
5
Average cloud cover
37%
33%
33%
Average visibility
6mi
6mi
6mi

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).

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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).

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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).

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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%).

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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").

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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).

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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").

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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).

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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).

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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).

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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).

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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).

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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).

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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).

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Green Bay, Wisconsin, USA

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