August weather forecast
Lannon, WI

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Weather in August

The last month of the summer, August, is another warm month in Lannon, Wisconsin, with temperature in the range of an average high of 76.6°F (24.8°C) and an average low of 61.9°F (16.6°C).

Temperature

Lannon marks the onset of August with an average high-temperature of a still warm 76.6°F (24.8°C), a subtle shift from July's 77.5°F (25.3°C). Lannon's average low-temperature during August nights is observed to be a refreshing 61.9°F (16.6°C).

Humidity

In August, the average relative humidity in Lannon, Wisconsin, is 79%.

Rainfall

In Lannon, in August, during 14.5 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. In Lannon, during the entire year, the rain falls for 139.2 days and collects up to 25.28" (642mm) of precipitation.

Snowfall

In Lannon, snow does not fall in May through September.

Daylight

The average length of the day in August in Lannon, Wisconsin, is 13h and 53min.
On the first day of the month, sunrise is at 5:44 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

In August, the average sunshine in Lannon is 10.4h.

UV index

In August, the average daily maximum UV index in Lannon is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.
Note: In August, the maximum UV index of 5 translates into these guidelines:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
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 Lannon?

The high-temperature in Lannon during August is 76.6°F (24.8°C) and the low-temperature is 61.9°F (16.6°C).

What is the average humidity in August in Lannon?

The average relative humidity in August in Lannon is 79%.

How many days does it rain in August in Lannon?

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

When it does not snow in Lannon?

In Lannon, snow does not fall in May through September.

What is the average length of the day in August in Lannon?

The average day length in August is 13h and 53min.

When is the sunrise / sunset in August in Lannon?

On the first day of August in Lannon, Wisconsin, sunrise is at 5:44 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 Lannon?

The average sunshine duration in August in Lannon is 10.4h.

What is the UV index intensity in August in Lannon?

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

Average temperature in August - Lannon, 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
Lannon, WI

Average pressure in August - Lannon, 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
Lannon, WI

Average wind speed in August - Lannon, 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
Lannon, WI

Average humidity in August - Lannon, 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
Lannon, WI

Average rainfall in August - Lannon, 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
Lannon, WI

Average rainfall days in August - Lannon, 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
Lannon, WI

Average snowfall in August - Lannon, 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
Lannon, WI

Average snowfall days in August - Lannon, 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
Lannon, WI

Average daylight in August / Average sunshine in August - Lannon, 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
Lannon, WI

Average sunshine days in August - Lannon, 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
Lannon, WI

Average UV index in August - Lannon, 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
Lannon, WI

Average cloud cover in August - Lannon, 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
Lannon, WI

Average visibility in August - Lannon, 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).

Lannon, Wisconsin, USA

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