September weather forecast
Wolsey, SD

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Wolsey, South Dakota, with an average temperature varying between 75.7°F (24.3°C) and 54.5°F (12.5°C).

Temperature

The commencement of September includes a gentle temperature shift, with the average high-temperature dropping a bit from 84.2°F (29°C) in August to a still warm 75.7°F (24.3°C). During the nights in September, Wolsey experiences a consistent average temperature of 54.5°F (12.5°C).

Humidity

With an average relative humidity of 62%, September is the least humid month.

Rainfall

In September, the rain falls for 9.8 days. Throughout September, 1.38" (35mm) of precipitation is accumulated. In Wolsey, during the entire year, the rain falls for 101.8 days and collects up to 18.19" (462mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

The average length of the day in September is 12h and 30min.
On the first day of September, sunrise is at 6:57 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 7:15 pm CDT.

Sunshine

The average sunshine in September is 8.9h.

UV index

The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.

Frequently asked questions

What are the temperatures in September?

September temperatures vary between a high-temperature of 75.7°F (24.3°C) and a low-temperature of 54.5°F (12.5°C). In August, the average heat index (a.k.a. 'real feel', 'feels like'), which factors the actual air temperature with the relative humidity, is appraised at 89.6°F (32°C).

What is the least humid month?

With an average relative humidity of 62%, September is the least humid month.

What is the average humidity in September in Wolsey?

In September, the average relative humidity is 62%.

How much does it rain in September?

In September, the rain falls for 9.8 days. Throughout September, 1.38" (35mm) of precipitation is accumulated.

When it does not snow?

May through September are months without snowfall.

Does it snow in September?

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

How many hours of daylight does Wolsey have in September?

In September, the average day length is 12h and 30min.

When are sunrise and sunset in September?

On the first day of September, sunrise is at 6:57 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 7:15 pm CDT.

How many hours of sunshine does Wolsey have in September?

The average sunshine duration in September is 8.9h.

How high is the UV index in September?

In Wolsey, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to Sun's UV rays.
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
Wolsey, SD

Average temperature in September - Wolsey, SD
  • Average high temperature in September: 75.7°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 (23.2°F).

  • Average low temperature in September: 54.5°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (8.2°F).

Average pressure in September
Wolsey, SD

Average pressure in September - Wolsey, 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 (29.84"Hg).

Average wind speed in September
Wolsey, SD

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

The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest months (with the lowest average wind speed) are July and August (8.6mph).

Average humidity in September
Wolsey, SD

Average humidity in September - Wolsey, SD
  • Average humidity in September: 62%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is September (62%).

Average rainfall in September
Wolsey, SD

Average rainfall in September - Wolsey, SD
  • Average rainfall in September: 1.38"

The wettest month (with the highest rainfall) is June (2.8").
The driest month (with the least rainfall) is January (0.55").

Average rainfall days in September
Wolsey, SD

Average rainfall days in September - Wolsey, SD
  • Average rainfall days in September: 9.8 days

The month with the highest number of rainy days is June (15.2 days).
The month with the least rainy days is February (1.8 days).

Average snowfall in September
Wolsey, SD

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

The month with the highest snowfall is February (3.54").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Wolsey, SD

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

The month with the highest number of snowfall days is December (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Wolsey, SD

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

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

Average sunshine days in September
Wolsey, SD

Average sunshine days in September - Wolsey, SD
  • Average sunshine days in September: 17.5 days

The month with the most sunshine days is November (21.8 days).
The month with the least sunshine days is June (12.3 days).

Average UV index in September
Wolsey, SD

Average UV index in September - Wolsey, 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 and November (UV index 1).

Average cloud cover in September
Wolsey, SD

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

The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 22).

Average visibility in September
Wolsey, SD

Average visibility in September - Wolsey, 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).

Wolsey, South Dakota, USA

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