September weather forecast
Quinn, SD

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Weather in September

September, the first month of the autumn in Quinn, is still a warm month, with temperature in the range of an average high of 77.5°F (25.3°C) and an average low of 58.3°F (14.6°C).

Temperature

As August transitions to September, the average high-temperature falls from a tropical 87.1°F (30.6°C) to a moderately hot 77.5°F (25.3°C). During the nights in September, the temperature in Quinn averages to a refreshing 58.3°F (14.6°C).

Humidity

With an average relative humidity of 47%, September is the least humid month in Quinn.

Rainfall

In Quinn, during September, the rain falls for 8.5 days and regularly aggregates up to 0.91" (23mm) of precipitation. Throughout the year, in Quinn, there are 95.3 rainfall days, and 13.74" (349mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Quinn, the average length of the day in September is 12h and 29min.
On the first day of the month, sunrise is at 6:12 am and sunset at 7:23 pm. On the last day of September, in Quinn, sunrise is at 6:45 am and sunset at 6:30 pm MDT.

Sunshine

The average sunshine in September is 9.9h.

UV index

The average daily maximum UV index in September in Quinn is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.
Note: In September, the UV index of 5 transforms into the following advice:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
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Frequently asked questions

What is the usual temperature for Quinn in September?

The average high-temperature and low-temperature in Quinn, South Dakota, during September are 77.5°F (25.3°C) and 58.3°F (14.6°C) respectively. In August, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is computed to be 89.6°F (32°C).

What is the least humid month in Quinn?

September is the least humid month in Quinn, South Dakota, with an average relative humidity of 47%.

What is the average humidity in September in Quinn?

In Quinn, South Dakota, the average relative humidity in September is 47%.

How many days does it rain in September in Quinn?

In Quinn, South Dakota, in September, it is raining for 8.5 days, with typically 0.91" (23mm) of accumulated precipitation.

When it does not snow in Quinn?

In Quinn, South Dakota, snow does not fall in June through September.

Does it snow in Quinn in September?

In Quinn, South Dakota, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September in Quinn?

In Quinn, the average day length in September is 12h and 29min.

When is the sunrise / sunset in September in Quinn?

On the first day of September, sunrise is at 6:12 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 6:45 am and sunset at 6:30 pm MDT.

How many hours of sunshine does Quinn have in September?

In Quinn, South Dakota, the average sunshine duration in September is 9.9h.

What is the UV index reading in September in Quinn?

The average daily maximum UV index in September is 5. A UV Index value 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 September
Quinn, SD

Average temperature in September - Quinn, SD
  • Average high temperature in September: 77.5°F

The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (29.8°F).

  • Average low temperature in September: 58.3°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).

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Average pressure in September
Quinn, SD

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

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

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Average wind speed in September
Quinn, SD

Average wind speed in September - Quinn, SD
  • Average wind speed in September: 11.1mph

The windiest month (with the highest average wind speed) is April (12.1mph).
The calmest month (with the lowest average wind speed) is February (10.1mph).

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Average humidity in September
Quinn, SD

Average humidity in September - Quinn, SD
  • Average humidity in September: 47%

The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is September (47%).

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Average rainfall in September
Quinn, SD

Average rainfall in September - Quinn, SD
  • Average rainfall in September: 0.91"

The wettest month (with the highest rainfall) is May (2.09").
The driest month (with the least rainfall) is January (0.39").

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Average rainfall days in September
Quinn, SD

Average rainfall days in September - Quinn, SD
  • Average rainfall days in September: 8.5 days

The month with the highest number of rainy days is May (13.5 days).
The month with the least rainy days is February (2.6 days).

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Average snowfall in September
Quinn, SD

Average snowfall in September - Quinn, SD
  • Average snowfall in September: 0"

The month with the highest snowfall is February (3.15").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Quinn, SD

Average snowfall days in September - Quinn, SD
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (8.9 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
Quinn, SD

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

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in September: 9h and 5min

The month with the most sunshine is August (Average sunshine: 11h and 42min).
The months with the least sunshine are January and February (Average sunshine: 5h and 12min).

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Average sunshine days in September
Quinn, SD

Average sunshine days in September - Quinn, SD
  • Average sunshine days in September: 18.8 days

The month with the most sunshine days is December (21.1 days).
The months with the least sunshine days are April and June (14.1 days).

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Average UV index in September
Quinn, SD

Average UV index in September - Quinn, SD
  • Average UV index in September: 5

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in September
Quinn, SD

Average cloud cover in September - Quinn, SD
  • Average cloud cover in September: 19

The month with the most cloud cover is January (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 18).

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Average visibility in September
Quinn, SD

Average visibility in September - Quinn, 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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Quinn, South Dakota, USA

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