August weather forecast
Brillion, WI

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Weather in August

The last month of the summer, August, is another warm month in Brillion, Wisconsin, with an average temperature varying between 59.5°F (15.3°C) and 77°F (25°C).

Temperature

The transition into August marks the average high-temperature at a still moderately hot 77°F (25°C), differing minimally from July's 78.3°F (25.7°C). An average low-temperature of 59.5°F (15.3°C) is expected during August.

Humidity

The average relative humidity in August is 80%.

Rainfall

In August, the rain falls for 14.1 days. Throughout August, 1.69" (43mm) of precipitation is accumulated. Throughout the year, there are 125 rainfall days, and 18.07" (459mm) of precipitation is accumulated.

Snowfall

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

Daylight

In August, the average length of the day is 13h and 58min.
On the first day of August, sunrise is at 5:40 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 7:29 pm CDT.

Sunshine

The average sunshine in August in Brillion is 9.9h.

UV index

June through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.
Note: A maximum high UV index of 5 in August translates into the following recommendations:
Exercise care. People with light skin might get burns in fewer than 30 minutes. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Updated: Jun 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average August temperature in Brillion?

In August, the average high-temperature and low-temperature are 77°F (25°C) and 59.5°F (15.3°C) respectively.

What is the average humidity in August?

In August, the average relative humidity is 80%.

How many days does it rain in August?

In Brillion, during August, the rain falls for 14.1 days and regularly aggregates up to 1.69" (43mm) of precipitation.

When it does not snow?

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

How many hours of daylight does Brillion have in August?

In Brillion, the average day length in August is 13h and 58min.

When is the sunrise / sunset in August?

On the first day of August, sunrise is at 5:40 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 7:29 pm CDT.

How many hours of sunshine does Brillion have in August?

In Brillion, the average sunshine duration in August is 9.9h.

When is the highest UV index in Brillion?

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

What is the UV index intensity in August?

The average daily maximum UV index in August is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability 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
Brillion, WI

Average temperature in August - Brillion, WI
  • Average high temperature in August: 77°F

The warmest month (with the highest average high temperature) is July (78.3°F).
The month with the lowest average high temperature is January (23.2°F).

  • Average low temperature in August: 59.5°F

The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (12°F).

Average pressure in August
Brillion, WI

Average pressure in August - Brillion, WI
  • Average pressure in August: 29.96"Hg

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

Average wind speed in August
Brillion, WI

Average wind speed in August - Brillion, WI
  • Average wind speed in August: 7.1mph

The windiest months (with the highest average wind speed) are January and February (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).

Average humidity in August
Brillion, WI

Average humidity in August - Brillion, WI
  • Average humidity in August: 80%

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

Average rainfall in August
Brillion, WI

Average rainfall in August - Brillion, WI
  • Average rainfall in August: 1.69"

The wettest month (with the highest rainfall) is May (2.48").
The driest month (with the least rainfall) is February (0.79").

Average rainfall days in August
Brillion, WI

Average rainfall days in August - Brillion, WI
  • Average rainfall days in August: 14.1 days

The month with the highest number of rainy days is July (14.9 days).
The month with the least rainy days is January (3.8 days).

Average snowfall in August
Brillion, WI

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

The month with the highest snowfall is January (3.35").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Brillion, WI

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

The month with the highest number of snowfall days is February (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Brillion, WI
  • Average daylight in August: 14h and 0min

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 August: 9h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 3h and 24min).

Average sunshine days in August
Brillion, WI

Average sunshine days in August - Brillion, WI
  • Average sunshine days in August: 13.8 days

The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is July (12.6 days).

Average UV index in August
Brillion, WI

Average UV index in August - Brillion, WI
  • Average UV index in August: 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, November and December (UV index 1).

Average cloud cover in August
Brillion, WI

Average cloud cover in August - Brillion, WI
  • Average cloud cover in August: 32

The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in August
Brillion, WI

Average visibility in August - Brillion, 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).

Brillion, Wisconsin, USA

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