August weather forecast
Sussex, WI

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Weather in August

August, the last month of the summer in Sussex, is another warm month, with an average temperature varying between 61.2°F (16.2°C) and 76.6°F (24.8°C).

Temperature

The commencement of August records an average high-temperature of a still warm 76.6°F (24.8°C), barely varying from July's 78.1°F (25.6°C). During August, Sussex records an average temperature of 61.2°F (16.2°C) at night.

Humidity

The average relative humidity in August is 81%.

Rainfall

In Sussex, in August, during 16.2 rainfall days, 2.76" (70mm) of precipitation is typically accumulated. Throughout the year, in Sussex, there are 149.2 rainfall days, and 28.54" (725mm) of precipitation is accumulated.

Snowfall

In Sussex, snow does not fall in June through September.

Daylight

In Sussex, the average length of the day in August is 13h and 53min.
On the first day of August, sunrise is at 5:44 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 7:29 pm CDT.

Sunshine

August has the most sunshine of the year, with an average of 10.2h of sunshine.

UV index

In Sussex, the average daily maximum UV index in August is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for average individuals.
Note: The maximum UV index, 5 during August, leads to the following recommendations:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Updated: Jun 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in August?

In August, in Sussex, the average high-temperature is 76.6°F (24.8°C), and the average low-temperature is 61.2°F (16.2°C).

What is the average humidity in August?

In August, the average relative humidity is 81%.

How much does it rain in August?

In August, the rain falls for 16.2 days. Throughout August, 2.76" (70mm) of precipitation is accumulated.

When it does not snow in Sussex?

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

How many hours of daylight does Sussex have in August?

In Sussex, the average day length in August is 13h and 53min.

What time are sunrise and sunset in August?

On the first day of August, sunrise is at 5:44 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 7:29 pm CDT.

What month has the most sunshine?

The month with the most sunshine is August, with an average of 10.2h of sunshine.

How long on average sun shines in August?

In August, the average sunshine duration is 10.2h.

What is the UV index intensity in August?

The average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a medium health risk from exposure to Sun's UV rays.
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 August
Sussex, WI

Average temperature in August - Sussex, WI
  • Average high temperature in August: 76.6°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 (25.2°F).

  • Average low temperature in August: 61.2°F

The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).

Average pressure in August
Sussex, WI

Average pressure in August - Sussex, WI
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in August
Sussex, WI

Average wind speed in August - Sussex, WI
  • Average wind speed in August: 6.7mph

The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.7mph).

Average humidity in August
Sussex, WI

Average humidity in August - Sussex, WI
  • Average humidity in August: 81%

The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and October (77%).

Average rainfall in August
Sussex, WI

Average rainfall in August - Sussex, WI
  • Average rainfall in August: 2.76"

The wettest month (with the highest rainfall) is June (3.43").
The driest month (with the least rainfall) is February (1.46").

Average rainfall days in August
Sussex, WI

Average rainfall days in August - Sussex, WI
  • Average rainfall days in August: 16.2 days

The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is February (5.3 days).

Average snowfall in August
Sussex, WI

Average snowfall in August - Sussex, WI
  • Average snowfall in August: 0"

The month with the highest snowfall is January (5.43").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Sussex, WI

Average snowfall days in August - Sussex, WI
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (15.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Sussex, WI

Average daylight in August / Average sunshine in August - Sussex, WI
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in August: 10h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

Average sunshine days in August
Sussex, WI

Average sunshine days in August - Sussex, WI
  • Average sunshine days in August: 11.5 days

The month with the most sunshine days is November (15.9 days).
The months with the least sunshine days are June and July (10.3 days).

Average UV index in August
Sussex, WI

Average UV index in August - Sussex, WI
  • Average UV index in August: 5

The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in August
Sussex, WI

Average cloud cover in August - Sussex, WI
  • Average cloud cover in August: 30

The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are August and September (Cloud cover 30).

Average visibility in August
Sussex, WI

Average visibility in August - Sussex, WI
  • Average visibility in August: 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).

Sussex, Wisconsin, USA

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