August weather forecast
Cottage Grove, WI

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Weather in August

The last month of the summer, August, is another warm month in Cottage Grove, Wisconsin, with temperature in the range of an average low of 59.5°F (15.3°C) and an average high of 77.4°F (25.2°C).

Temperature

Cottage Grove commences August with an average high-temperature of a still moderately hot 77.4°F (25.2°C), maintaining a close resemblance to the previous month. Throughout the August nights, Cottage Grove encounters a low-temperature of 59.5°F (15.3°C).

Humidity

In Cottage Grove, the average relative humidity in August is 83%.

Rainfall

In Cottage Grove, during August, the rain falls for 13.4 days and regularly aggregates up to 2.4" (61mm) of precipitation. Throughout the year, there are 134.9 rainfall days, and 26.34" (669mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In August, the average length of the day in Cottage Grove is 13h and 53min.
On the first day of August in Cottage Grove, Wisconsin, sunrise is at 5:48 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 6:20 am and sunset at 7:32 pm CDT.

Sunshine

In August, the average sunshine is 9.7h.

UV index

May through August, with an average maximum UV index of 5, are months with the highest UV index in Cottage Grove. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum UV index of 5 during August translates into these guidelines:
Take necessary precautions - Defending against sun damage is advocated. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in August in Cottage Grove?

The average high-temperature, in August, in Cottage Grove, is 77.4°F (25.2°C), while the average low-temperature is 59.5°F (15.3°C).

What is the average humidity in August in Cottage Grove?

In Cottage Grove, Wisconsin, the average relative humidity in August is 83%.

How much does it rain in Cottage Grove in August?

In August, in Cottage Grove, Wisconsin, the rain falls for 13.4 days. Throughout August, 2.4" (61mm) of precipitation is accumulated.

When it does not snow in Cottage Grove?

June through September are months without snowfall in Cottage Grove, Wisconsin.

How many hours of daylight does Cottage Grove have in August?

In Cottage Grove, Wisconsin, the average day length in August is 13h and 53min.

When is the sunrise / sunset in August in Cottage Grove?

On the first day of August in Cottage Grove, Wisconsin, sunrise is at 5:48 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 6:20 am and sunset at 7:32 pm CDT.

How many hours of sunshine does Cottage Grove have in August?

In August, the average sunshine duration is 9.7h.

What are the months with the highest UV index in Cottage Grove?

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

What is the UV index reading in August in Cottage Grove?

In Cottage Grove, the average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to 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 August
Cottage Grove, WI

Average temperature in August - Cottage Grove, WI
  • Average high temperature in August: 77.4°F

The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (24.1°F).

  • Average low temperature in August: 59.5°F

The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).

Average pressure in August
Cottage Grove, WI

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

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in August
Cottage Grove, WI

Average wind speed in August - Cottage Grove, WI
  • Average wind speed in August: 6.6mph

The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

Average humidity in August
Cottage Grove, WI

Average humidity in August - Cottage Grove, WI
  • Average humidity in August: 83%

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
Cottage Grove, WI

Average rainfall in August - Cottage Grove, WI
  • Average rainfall in August: 2.4"

The wettest month (with the highest rainfall) is June (3.5").
The driest months (with the least rainfall) are January and February (1.1").

Average rainfall days in August
Cottage Grove, WI

Average rainfall days in August - Cottage Grove, WI
  • Average rainfall days in August: 13.4 days

The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (4 days).

Average snowfall in August
Cottage Grove, WI

Average snowfall in August - Cottage Grove, WI
  • Average snowfall in August: 0"

The month with the highest snowfall is January (4.41").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Cottage Grove, WI

Average snowfall days in August - Cottage Grove, WI
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (11.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Cottage Grove, WI

Average daylight in August / Average sunshine in August - Cottage Grove, 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: 9h and 4min

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).

Average sunshine days in August
Cottage Grove, WI

Average sunshine days in August - Cottage Grove, WI
  • Average sunshine days in August: 15.1 days

The month with the most sunshine days is December (17.5 days).
The month with the least sunshine days is June (10.7 days).

Average UV index in August
Cottage Grove, WI

Average UV index in August - Cottage Grove, WI
  • Average UV index in August: 5

The months with the highest UV index are May, 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
Cottage Grove, WI

Average cloud cover in August - Cottage Grove, WI
  • Average cloud cover in August: 35

The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is July (Cloud cover 34).

Average visibility in August
Cottage Grove, WI

Average visibility in August - Cottage Grove, WI
  • Average visibility in August: 5mi

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

Cottage Grove, Wisconsin, USA

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