August weather forecast
Madison, SD

Weather in August

August, the last month of the summer in Madison, is another warm month, with an average temperature varying between 81°F (27.2°C) and 59.4°F (15.2°C).

Temperature

In Madison, the average high-temperature in August is relatively the same as in July - a still moderately hot 81°F (27.2°C). In August, the average low-temperature is 59.4°F (15.2°C).

Heat index

In August, the average heat index is estimated at 84.7°F (29.3°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'apparent temperature', 'felt air temperature', or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like activity, clothing, pregnancy, and wind affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In Madison, the average relative humidity in August is 71%.

Rainfall

In Madison, it is raining for 12.3 days, with typically 2.2" (56mm) of accumulated precipitation. In Madison, during the entire year, the rain falls for 111.2 days and collects up to 21.14" (537mm) of precipitation.

Snowfall

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

Daylight

In Madison, the average length of the day in August is 13h and 57min.
On the first day of August, sunrise is at 6:16 am and sunset at 8:52 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 8:06 pm CDT.

Sunshine

In August, the average sunshine is 10h.

UV index

In Madison, the average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.
Note: In August, the average maximum UV index of 5 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. 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?

In Madison, South Dakota, in August, the average high-temperature is 81°F (27.2°C), and the average low-temperature is 59.4°F (15.2°C). In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which represents the influence of relative humidity on air temperature, is estimated at 84.7°F (29.3°C).

What is the average humidity in August in Madison?

The average relative humidity in August in Madison, South Dakota, is 71%.

How many days does it rain in August in Madison?

In August, in Madison, South Dakota, the rain falls for 12.3 days. Throughout August, 2.2" (56mm) of precipitation is accumulated.

When it does not snow in Madison?

June through September are months without snowfall in Madison, South Dakota.

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

In August, the average day length in Madison, South Dakota, is 13h and 57min.

When is the sunrise / sunset in August in Madison?

In August, on the first day of the month, sunrise is at 6:16 am and sunset at 8:52 pm. On the last day of the month, in Madison, sunrise is at 6:50 am and sunset at 8:06 pm CDT.

How many hours of sunshine does Madison have in August?

In August, the average sunshine duration in Madison, South Dakota, is 10h.

What is the UV index reading in August in Madison?

The average daily maximum UV index in August in Madison, South Dakota, is 5. A UV Index reading of 3 to 5 represents a moderate health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Madison, SD

Average temperature in August - Madison, SD
  • Average high temperature in August: 81°F

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (22.3°F).

  • Average low temperature in August: 59.4°F

The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (8.1°F).

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Average pressure in August
Madison, SD

Average pressure in August - Madison, SD
  • Average pressure in August: 29.93"Hg

The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

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Average wind speed in August
Madison, SD

Average wind speed in August - Madison, SD
  • Average wind speed in August: 8.6mph

The windiest month (with the highest average wind speed) is April (11.6mph).
The calmest months (with the lowest average wind speed) are July and August (8.6mph).

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Average humidity in August
Madison, SD

Average humidity in August - Madison, SD
  • Average humidity in August: 71%

The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is October (67%).

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Average rainfall in August
Madison, SD

Average rainfall in August - Madison, SD
  • Average rainfall in August: 2.2"

The wettest month (with the highest rainfall) is June (3.23").
The driest month (with the least rainfall) is November (0.59").

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Average rainfall days in August
Madison, SD

Average rainfall days in August - Madison, SD
  • Average rainfall days in August: 12.3 days

The month with the highest number of rainy days is June (18.7 days).
The month with the least rainy days is January (1.6 days).

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Average snowfall in August
Madison, SD

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

The month with the highest snowfall is February (4.76").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Madison, SD

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

The month with the highest number of snowfall days is January (11.3 days).
The 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, SD

Average daylight in August / Average sunshine in August - Madison, SD
  • Average daylight in August: 13h and 57min

The month with the longest days is June (Average daylight: 15h and 26min).
The month with the shortest days is December (Average daylight: 8h and 58min).

  • Average sunshine in August: 10h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

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Average sunshine days in August
Madison, SD

Average sunshine days in August - Madison, SD
  • Average sunshine days in August: 16.3 days

The month with the most sunshine days is November (22.4 days).
The month with the least sunshine days is June (9.5 days).

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Average UV index in August
Madison, SD

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

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in August
Madison, SD

Average cloud cover in August - Madison, SD
  • Average cloud cover in August: 29

The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 28).

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Average visibility in August
Madison, SD

Average visibility in August - Madison, SD
  • 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).

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