September weather forecast
Wetonka, SD

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Wetonka, South Dakota, with temperature in the range of an average low of 52.9°F (11.6°C) and an average high of 74.3°F (23.5°C).

Temperature

With the onset of September, Wetonka's average high-temperature slightly adjusts, moderately receding from August's warm 83.1°F (28.4°C) to a still moderately hot 74.3°F (23.5°C). The mean low-temperature during September nights is a cool 52.9°F (11.6°C).

Humidity

The months with the lowest humidity are August and September, with an average relative humidity of 60%.

Rainfall

In September, in Wetonka, South Dakota, the rain falls for 8.9 days. Throughout September, 1.26" (32mm) of precipitation is accumulated. Throughout the year, in Wetonka, there are 97.2 rainfall days, and 18.35" (466mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Wetonka, the average length of the day in September is 12h and 31min.
On the first day of the month, sunrise is at 6:57 am and sunset at 8:12 pm. On the last day of September, sunrise is at 7:33 am and sunset at 7:16 pm CDT.

Sunshine

The average sunshine in September in Wetonka is 8.7h.

UV index

In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: A daily maximum UV index of 4 in September translates into the following instructions:
Guard yourself - An obligation to protect skin and eyes from harm exists. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
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Frequently asked questions

What is the average September temperature in Wetonka?

In September, in Wetonka, the average high-temperature is 74.3°F (23.5°C), and the average low-temperature is 52.9°F (11.6°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines air temperature and relative humidity, in August is computed to be 86°F (30°C).

What is the least humid month in Wetonka?

August and September, with an average relative humidity of 60%, are the least humid months in Wetonka, South Dakota.

What is the average humidity in September in Wetonka?

The average relative humidity in September is 60%.

How many days does it rain in September in Wetonka?

In Wetonka, in September, during 8.9 rainfall days, 1.26" (32mm) of precipitation is typically accumulated.

When it does not snow in Wetonka?

June through September are months without snowfall in Wetonka.

Does it snow in Wetonka in September?

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

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

The average day length in September is 12h and 31min.

When is the sunrise / sunset in September in Wetonka?

On the first day of September in Wetonka, South Dakota, sunrise is at 6:57 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 7:16 pm CDT.

How many hours of sunshine does Wetonka have in September?

In Wetonka, the average sunshine duration in September is 8.7h.

How high is the UV index in September in Wetonka?

In Wetonka, 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
Wetonka, SD

Average temperature in September - Wetonka, SD
  • Average high temperature in September: 74.3°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (20.7°F).

  • Average low temperature in September: 52.9°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 (6.3°F).

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Average pressure in September
Wetonka, SD

Average pressure in September - Wetonka, SD
  • Average pressure in September: 29.96"Hg

The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

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Average wind speed in September
Wetonka, SD

Average wind speed in September - Wetonka, SD
  • Average wind speed in September: 9.6mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).

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Average humidity in September
Wetonka, SD

Average humidity in September - Wetonka, SD
  • Average humidity in September: 60%

The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are August and September (60%).

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Average rainfall in September
Wetonka, SD

Average rainfall in September - Wetonka, SD
  • Average rainfall in September: 1.26"

The wettest month (with the highest rainfall) is June (3.46").
The driest month (with the least rainfall) is January (0.59").

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Average rainfall days in September
Wetonka, SD

Average rainfall days in September - Wetonka, SD
  • Average rainfall days in September: 8.9 days

The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is February (2 days).

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Average snowfall in September
Wetonka, SD

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

The month with the highest snowfall is January (3.82").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Wetonka, SD

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

The month with the highest number of snowfall days is January (13 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
Wetonka, SD

Average daylight in September / Average sunshine in September - Wetonka, 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: 8h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

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Average sunshine days in September
Wetonka, SD

Average sunshine days in September - Wetonka, SD
  • Average sunshine days in September: 18.7 days

The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is June (12.7 days).

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Average UV index in September
Wetonka, SD

Average UV index in September - Wetonka, SD
  • Average UV index in September: 4

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February and November (UV index 1).

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Average cloud cover in September
Wetonka, SD

Average cloud cover in September - Wetonka, SD
  • Average cloud cover in September: 26

The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are July and August (Cloud cover 23).

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Average visibility in September
Wetonka, SD

Average visibility in September - Wetonka, SD
  • Average visibility in September: 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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Wetonka, South Dakota, USA

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