September weather forecast
Vilas, SD

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Weather in September

September, the first month of the autumn in Vilas, is still a pleasant month, with temperature in the range of an average low of 52.7°F (11.5°C) and an average high of 73°F (22.8°C).

Temperature

September signifies a gentle decline in Vilas's average high-temperature, easing from a moderately hot 81°F (27.2°C) in August to an agreeable 73°F (22.8°C). Vilas, in September, witnesses an average low-temperature of 52.7°F (11.5°C).

Humidity

In September, the average relative humidity is 69%.

Rainfall

In September, the rain falls for 10.4 days. Throughout September, 1.61" (41mm) of precipitation is accumulated. In Vilas, during the entire year, the rain falls for 111.2 days and collects up to 21.14" (537mm) of precipitation.

Snowfall

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

Daylight

The average length of the day in September is 12h and 29min.
On the first day of September, sunrise is at 6:54 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 7:12 pm CDT.

Sunshine

In September, the average sunshine is 8.7h.

UV index

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum UV index of 4 in September translates into the following recommendations:
Exercise caution. Those with pale skin may experience burns in less than half an hour. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Updated: Jun 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September?

In September, the average high-temperature and low-temperature are 73°F (22.8°C) and 52.7°F (11.5°C) respectively. In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is evaluated at 84.2°F (29°C).

What is the average humidity in September?

The average relative humidity in September is 69%.

How many days does it rain in September?

In Vilas, in September, during 10.4 rainfall days, 1.61" (41mm) of precipitation is typically accumulated.

When it does not snow?

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

Does it snow in September?

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

What is the average length of the day in September?

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

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:54 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 7:12 pm CDT.

How many hours of sunshine does Vilas have in September?

In Vilas, South Dakota, the average sunshine duration in September is 8.7h.

What is the UV index reading in September?

In Vilas, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unsafe 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
Vilas, SD

Average temperature in September - Vilas, SD
  • Average high temperature in September: 73°F

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (22.3°F).

  • Average low temperature in September: 52.7°F

The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (8.1°F).

Average pressure in September
Vilas, SD

Average pressure in September - Vilas, SD
  • Average pressure in September: 29.97"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).

Average wind speed in September
Vilas, SD

Average wind speed in September - Vilas, SD
  • Average wind speed in September: 9.9mph

The windiest month (with the highest average wind speed) is April (11.6mph).
The calmest months (with the lowest average wind speed) are July and August (8.6mph).

Average humidity in September
Vilas, SD

Average humidity in September - Vilas, SD
  • Average humidity in September: 69%

The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is October (67%).

Average rainfall in September
Vilas, SD

Average rainfall in September - Vilas, SD
  • Average rainfall in September: 1.61"

The wettest month (with the highest rainfall) is June (3.23").
The driest month (with the least rainfall) is November (0.59").

Average rainfall days in September
Vilas, SD

Average rainfall days in September - Vilas, SD
  • Average rainfall days in September: 10.4 days

The month with the highest number of rainy days is June (18.7 days).
The month with the least rainy days is January (1.6 days).

Average snowfall in September
Vilas, SD

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

The month with the highest snowfall is February (4.76").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Vilas, SD

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

The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Vilas, 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 4min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

Average sunshine days in September
Vilas, SD

Average sunshine days in September - Vilas, SD
  • Average sunshine days in September: 18 days

The month with the most sunshine days is November (22.4 days).
The month with the least sunshine days is June (9.5 days).

Average UV index in September
Vilas, SD

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

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in September
Vilas, SD

Average cloud cover in September - Vilas, SD
  • Average cloud cover in September: 31

The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 28).

Average visibility in September
Vilas, SD

Average visibility in September - Vilas, 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).

Vilas, South Dakota, USA

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