September weather forecast
Mud Butte, SD

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Weather in September

September, the first month of the autumn in Mud Butte, is also a moderately hot month, with an average temperature fluctuating between 75.4°F (24.1°C) and 56.3°F (13.5°C).

Temperature

Mud Butte's weather in September involves a decrease in the average high-temperature, moving down from August's 84.7°F (29.3°C) to a still moderately hot 75.4°F (24.1°C). Throughout September, Mud Butte witnesses a nighttime temperature average of 56.3°F (13.5°C).

Humidity

The months with the lowest humidity are August and September, with an average relative humidity of 49%.

Rainfall

In Mud Butte, in September, during 7.9 rainfall days, 0.87" (22mm) of precipitation is typically accumulated. Throughout the year, in Mud Butte, there are 99.7 rainfall days, and 16.06" (408mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

The average length of the day in September is 12h and 31min.
On the first day of the month, sunrise is at 6:14 am and sunset at 7:28 pm. On the last day of September, sunrise is at 6:49 am and sunset at 6:33 pm MDT.

Sunshine

In September, the average sunshine is 9.7h.

UV index

In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: An average maximum UV index of 4 in September leads to these recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
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Frequently asked questions

What are the temperatures in Mud Butte in September?

In Mud Butte, 75.4°F (24.1°C) is the average high-temperature and 56.3°F (13.5°C) is the average low-temperature during September. The average heat index (a.k.a. 'feels like', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in August is evaluated at 86°F (30°C).

What are the least humid months in Mud Butte?

August and September, with an average relative humidity of 49%, are the least humid months in Mud Butte, South Dakota.

What is the average humidity in September in Mud Butte?

In Mud Butte, South Dakota, the average relative humidity in September is 49%.

How much does it rain in Mud Butte in September?

In Mud Butte, South Dakota, during September, the rain falls for 7.9 days and regularly aggregates up to 0.87" (22mm) of precipitation.

When it does not snow in Mud Butte?

June through September are months without snowfall.

Does it snow in Mud Butte in September?

In Mud Butte, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Mud Butte have in September?

In September, the average day length in Mud Butte is 12h and 31min.

When are sunrise and sunset in September in Mud Butte?

On the first day of September, sunrise is at 6:14 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 6:33 pm MDT.

How long on average sun shines in September in Mud Butte?

In September, the average sunshine duration in Mud Butte is 9.7h.

How high is the UV index in September in Mud Butte?

In Mud Butte, South Dakota, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health threat 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 September
Mud Butte, SD

Average temperature in September - Mud Butte, SD
  • Average high temperature in September: 75.4°F

The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (27°F).

  • Average low temperature in September: 56.3°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).

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Average pressure in September
Mud Butte, SD

Average pressure in September - Mud Butte, SD
  • Average pressure in September: 29.94"Hg

The months with the highest atmospheric pressure are January and February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed in September
Mud Butte, SD

Average wind speed in September - Mud Butte, SD
  • Average wind speed in September: 11.3mph

The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest months (with the lowest average wind speed) are February and August (10.4mph).

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Average humidity in September
Mud Butte, SD

Average humidity in September - Mud Butte, SD
  • Average humidity in September: 49%

The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are August and September (49%).

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Average rainfall in September
Mud Butte, SD

Average rainfall in September - Mud Butte, SD
  • Average rainfall in September: 0.87"

The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is January (0.51").

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Average rainfall days in September
Mud Butte, SD

Average rainfall days in September - Mud Butte, SD
  • Average rainfall days in September: 7.9 days

The month with the highest number of rainy days is May (14.7 days).
The months with the least rainy days are January and February (3.3 days).

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Average snowfall in September
Mud Butte, SD

Average snowfall in September - Mud Butte, SD
  • Average snowfall in September: 0"

The month with the highest snowfall is February (5.12").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Mud Butte, SD

Average snowfall days in September - Mud Butte, SD
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Mud Butte, SD

Average daylight in September / Average sunshine in September - Mud Butte, SD
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in September: 9h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).

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Average sunshine days in September
Mud Butte, SD

Average sunshine days in September - Mud Butte, SD
  • Average sunshine days in September: 20.4 days

The month with the most sunshine days is September (20.4 days).
The month with the least sunshine days is April (12.4 days).

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Average UV index in September
Mud Butte, SD

Average UV index in September - Mud Butte, SD
  • Average UV index in September: 4

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in September
Mud Butte, SD

Average cloud cover in September - Mud Butte, SD
  • Average cloud cover in September: 22

The month with the most cloud cover is January (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 19).

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Average visibility in September
Mud Butte, SD

Average visibility in September - Mud Butte, SD
  • Average visibility in September: 6mi

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

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Mud Butte, South Dakota, USA

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