September weather forecast
Plankinton, SD

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Weather in September

September, the first month of the autumn in Plankinton, is also a moderately hot month, with temperature in the range of an average high of 76.1°F (24.5°C) and an average low of 55°F (12.8°C).

Temperature

Plankinton records a mild change in average high-temperature during September, easing from 84.4°F (29.1°C) in August to a still moderately hot 76.1°F (24.5°C). During September, Plankinton witnesses a consistent average low-temperature of 55°F (12.8°C).

Humidity

The months with the lowest humidity are September and October, with an average relative humidity of 63%.

Rainfall

In September, in Plankinton, the rain falls for 9.2 days. Throughout September, 1.18" (30mm) of precipitation is accumulated. Throughout the year, in Plankinton, there are 93.2 rainfall days, and 11.3" (287mm) of precipitation is accumulated.

Snowfall

In Plankinton, snow does not fall in May through September.

Daylight

In September, the average length of the day in Plankinton, South Dakota, is 12h and 29min.
On the first day of September, sunrise is at 6:58 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 7:16 pm CDT.

Sunshine

In Plankinton, the average sunshine in September is 8.9h.

UV index

The average daily maximum UV index in September in Plankinton is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum UV index, 5 during September, leads to the following recommendations:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. The Sun's radiation is especially intense around midday; try to stay in shade during this period. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
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Frequently asked questions

What is the usual temperature for Plankinton in September?

In September, in Plankinton, the average high-temperature is 76.1°F (24.5°C), and the average low-temperature is 55°F (12.8°C). In August, the average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, is computed to be 89.6°F (32°C).

What are the least humid months in Plankinton?

The months with the lowest humidity are September and October, with an average relative humidity of 63%.

What is the average humidity in September in Plankinton?

The average relative humidity in September is 63%.

How much does it rain in Plankinton in September?

In September, in Plankinton, South Dakota, the rain falls for 9.2 days. Throughout September, 1.18" (30mm) of precipitation is accumulated.

When it does not snow in Plankinton?

May through September are months without snowfall in Plankinton.

Does it snow in Plankinton in September?

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

How many hours of daylight does Plankinton have in September?

The average day length in September is 12h and 29min.

What time are sunrise and sunset in September in Plankinton?

In September, on the first day of the month, sunrise is at 6:58 am and sunset at 8:08 pm. On the last day of the month, in Plankinton, sunrise is at 7:31 am and sunset at 7:16 pm CDT.

How long on average sun shines in September in Plankinton?

The average sunshine duration in September in Plankinton is 8.9h.

What is the UV index reading in September in Plankinton?

The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health 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
Plankinton, SD

Average temperature in September - Plankinton, SD
  • Average high temperature in September: 76.1°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (24.4°F).

  • Average low temperature in September: 55°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (10.2°F).

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Average pressure in September
Plankinton, SD

Average pressure in September - Plankinton, SD
  • Average pressure in September: 29.96"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 September
Plankinton, SD

Average wind speed in September - Plankinton, SD
  • Average wind speed in September: 9.7mph

The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (8.6mph).

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Average humidity in September
Plankinton, SD

Average humidity in September - Plankinton, SD
  • Average humidity in September: 63%

The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are September and October (63%).

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Average rainfall in September
Plankinton, SD

Average rainfall in September - Plankinton, SD
  • Average rainfall in September: 1.18"

The wettest month (with the highest rainfall) is May (1.65").
The driest months (with the least rainfall) are February and November (0.28").

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Average rainfall days in September
Plankinton, SD

Average rainfall days in September - Plankinton, SD
  • Average rainfall days in September: 9.2 days

The month with the highest number of rainy days is June (13.6 days).
The month with the least rainy days is February (1.9 days).

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Average snowfall in September
Plankinton, SD

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

The month with the highest snowfall is February (1.42").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
Plankinton, SD

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

The month with the highest number of snowfall days is January (8.7 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
Plankinton, SD

Average daylight in September / Average sunshine in September - Plankinton, 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: 8h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

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Average sunshine days in September
Plankinton, SD

Average sunshine days in September - Plankinton, SD
  • Average sunshine days in September: 18.3 days

The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is June (12.8 days).

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Average UV index in September
Plankinton, SD

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

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

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Average cloud cover in September
Plankinton, SD

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

The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 22).

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Average visibility in September
Plankinton, SD

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

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