August weather forecast
Menomonee Falls, WI

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Weather in August

August leads the retreat from the peak summer season. The temperature, UV index, and daylight hours scale back compared to July. Nonetheless, August still upholds the warmth and beauty of summer. The low wind speed and the drop in temperatures, compared to the previous month, complement well with the occasional summer showers. Despite the hint of shift, the summer charm remains intact throughout August.

Temperature

August's arrival brings an average high-temperature of a still moderately hot 76.6°F (24.8°C), demonstrating subtle variation from the preceding month. The temperature dips to an average of 61.9°F (16.6°C) during August nights.

Humidity

In August, the average relative humidity is 79%.

Rainfall

In Menomonee Falls, during August, the rain falls for 14.5 days and regularly aggregates up to 2.2" (56mm) of precipitation. In Menomonee Falls, during the entire year, the rain falls for 139.2 days and collects up to 25.28" (642mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

In Menomonee Falls, the average length of the day in August is 13h and 54min.
On the first day of the month, sunrise is at 5:43 am and sunset at 8:13 pm. On the last day of August, sunrise is at 6:16 am and sunset at 7:28 pm CDT.

Sunshine

The average sunshine in August is 10.4h.

UV index

In Menomonee Falls, the average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index of 5 during August translates into these guidelines:
Guard yourself - Precautionary measures against sun damage are advocated. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Updated: Aug 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in August?

August temperatures in Menomonee Falls vary between a high-temperature of 76.6°F (24.8°C) and a low-temperature of 61.9°F (16.6°C).

What is the average humidity in August?

In Menomonee Falls, the average relative humidity in August is 79%.

How many days does it rain in August?

In August, the rain falls for 14.5 days. Throughout August, 2.2" (56mm) of precipitation is accumulated.

When it does not snow?

In Menomonee Falls, snow does not fall in May through September.

What is the average length of the day in August in Menomonee Falls?

In August, the average day length is 13h and 54min.

When is the sunrise / sunset in August?

On the first day of August, sunrise is at 5:43 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 7:28 pm CDT.

How long on average sun shines in August?

In August, the average sunshine duration is 10.4h.

What is the UV index reading in August?

In Menomonee Falls, the average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat 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
Menomonee Falls, WI

Average temperature in August - Menomonee Falls, WI
  • Average high temperature in August: 76.6°F

The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (25.2°F).

  • Average low temperature in August: 61.9°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).

Average pressure in August
Menomonee Falls, WI

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

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

Average wind speed in August
Menomonee Falls, WI

Average wind speed in August - Menomonee Falls, WI
  • Average wind speed in August: 7mph

The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).

Average humidity in August
Menomonee Falls, WI

Average humidity in August - Menomonee Falls, WI
  • Average humidity in August: 79%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (76%).

Average rainfall in August
Menomonee Falls, WI

Average rainfall in August - Menomonee Falls, WI
  • Average rainfall in August: 2.2"

The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is February (1.02").

Average rainfall days in August
Menomonee Falls, WI

Average rainfall days in August - Menomonee Falls, WI
  • Average rainfall days in August: 14.5 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (4.1 days).

Average snowfall in August
Menomonee Falls, WI

Average snowfall in August - Menomonee Falls, WI
  • Average snowfall in August: 0"

The month with the highest snowfall is January (4.02").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Menomonee Falls, WI

Average snowfall days in August - Menomonee Falls, WI
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Menomonee Falls, WI

Average daylight in August / Average sunshine in August - Menomonee Falls, 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 2min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

Average sunshine days in August
Menomonee Falls, WI

Average sunshine days in August - Menomonee Falls, WI
  • Average sunshine days in August: 13.1 days

The month with the most sunshine days is December (15.9 days).
The month with the least sunshine days is April (12 days).

Average UV index in August
Menomonee Falls, WI

Average UV index in August - Menomonee Falls, WI
  • Average UV index in August: 5

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

Average cloud cover in August
Menomonee Falls, WI

Average cloud cover in August - Menomonee Falls, WI
  • Average cloud cover in August: 28

The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 28).

Average visibility in August
Menomonee Falls, WI

Average visibility in August - Menomonee Falls, WI
  • Average visibility in August: 6mi

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

Menomonee Falls, Wisconsin, USA

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