August weather forecast and climate
Madison, WI

The State Capitol building in Madison, Wisconsin, on a beautiful spring evening
The State Capitol building in Madison, Wisconsin, on a beautiful spring evening

Weather in August

August, the last month of the summer, in Madison, is another warm month, with average temperature fluctuating between 77.4°F (25.2°C) and 59.5°F (15.3°C).

Temperature

In Madison, the average high-temperature is almost the same as in July - a still moderately hot 77.4°F (25.2°C). In Madison, in August, the average low-temperature is 59.5°F (15.3°C).

Humidity

In Madison, the average relative humidity in August is 82%.

Rainfall

In Madison, in August, it is raining for 5.4 days, with typically 0.31" (8mm) of accumulated precipitation. In Madison, Wisconsin, during the entire year, the rain falls for 50.2 days and collects up to 4.76" (121mm) of precipitation.

Snowfall

In Madison snow does not fall in May through September.

Daylight

The average length of the day in Madison, Wisconsin, is 13.9h.

Sunshine

In Madison, Wisconsin, the average sunshine in August is 9.7h.

UV index

The average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to the UV radiation for average individuals.
Note: The daily maximum UV index of 5 in August interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in August in Madison?

The average high-temperature, in August, in Madison, Wisconsin, 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 Madison?

In Madison, Wisconsin, the average relative humidity in August is 82%.

How many days does it rain in August in Madison?

In August, in Madison, Wisconsin, the rain falls for 5.4 days. Throughout August, 0.31" (8mm) of precipitation is accumulated.

When it does not snow in Madison?

May through September are months without snowfall.

How many hours of daylight does Madison have in August?

In August, the average length of the day is 13.9h.

How long on average sun shines in August in Madison?

In August, the average sunshine is 9.7h.

What is the UV index intensity in August in Madison?

The average daily maximum UV index in August in Madison, Wisconsin, is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from unprotected exposure to the UV radiation.

Average temperature in August
Madison, WI

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

The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (23.9°F).

  • Average low temperature in August: 59.5°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).

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Average pressure in August
Madison, WI

Average pressure in August - Madison, WI
  • Average pressure in August: 29.97"

Months with the highest atmospheric pressure are January and February (30.11").
The month with the lowest atmospheric pressure is June (29.91").

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Average wind speed in August
Madison, WI

Average wind speed in August - Madison, 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).

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Average humidity in August
Madison, WI

Average humidity in August - Madison, WI
  • Average humidity in August: 82%

Months with the highest relative humidity are January and February (88%).
Months with the lowest relative humidity are April and October (77%).

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Average rainfall in August
Madison, WI

Average rainfall in August - Madison, WI
  • Average rainfall in August: 0.31"

The wettest month (with the highest rainfall) is July (0.63").
The driest months (with the least rainfall) are January, March, November and December (0.24").

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Average rainfall days in August
Madison, WI

Average rainfall days in August - Madison, WI
  • Average rainfall days in August: 5.4 days

The month with the highest number of rainy days is June (6.7 days).
The month with the least rainy days is January (1.1 days).

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Average snowfall in August
Madison, WI

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

The month with the highest snowfall is February (0.94").
Months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Madison, WI

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

The month with the highest number of snowfall days is January (5.6 days).
Months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Madison, WI
  • Average daylight in August: 13.9h

The month with the longest days is June (Average daylight: 15.3h).
The month with the shortest days is December (Average daylight: 9.1h).

  • Average sunshine in August: 9.7h

The month with the most sunshine is July (Average sunshine: 9.8h).
The month with the least sunshine is January (Average sunshine: 3.3h).

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Average sunshine days in August
Madison, WI

Average sunshine days in August - Madison, WI
  • Average sunshine days in August: 22.5 days

The month with the most sunshine days is December (27 days).
The month with the least sunshine days is June (19.8 days).

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Average UV index in August
Madison, WI

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

Months with the highest UV index are June and July (UV index 6).
Months with the lowest UV index are January, November and December (UV index 1).

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Average cloud cover in August
Madison, WI

Average cloud cover in August - Madison, WI
  • Average cloud cover in August: 34

The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 34).

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Average visibility in August
Madison, WI

Average visibility in August - Madison, WI
  • Average visibility in August: 5mi

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

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