Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Setting in of September comes with a decrease in the average high-temperature, moving from a warm 81.9°F (27.7°C) in August to an agreeable 72.7°F (22.6°C). Long Lake experiences a mean temperature of 52.2°F (11.2°C) during September nights.Humidity
The months with the lowest humidity in Long Lake are August and September, with an average relative humidity of 61%.Rainfall
In Long Lake, in September, during 8.4 rainfall days, 1.14" (29mm) of precipitation is typically accumulated. Throughout the year, in Long Lake, there are 92.3 rainfall days, and 15.28" (388mm) of precipitation is accumulated.Snowfall
In Long Lake, snow does not fall in June through September.Daylight
In Long Lake, South Dakota, the average length of the day in September is 12h and 31min.On the first day of September in Long Lake, sunrise is at 6:58 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 7:18 pm CDT.
Sunshine
In September, the average sunshine in Long Lake is 8.5h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: During September, 4 as the daily maximum UV index converts into the following advice:
Make use of precautions - Suggestions to resist sunburn are communicated. Around midday, solar radiation is most harmful; hence, exposure should be limited. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Long Lake in September?
What is the least humid month in Long Lake?
What is the average humidity in September in Long Lake?
How many days does it rain in September in Long Lake?
When it does not snow in Long Lake?
Does it snow in Long Lake in September?
What is the average length of the day in September in Long Lake?
When is the sunrise / sunset in September in Long Lake?
How many hours of sunshine does Long Lake have in September?
How high is the UV index in September in Long Lake?
Average temperature in September
Long Lake, SD
- Average high temperature in September: 72.7°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (19.8°F).
- Average low temperature in September: 52.2°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (5.4°F).
Average pressure in September
Long Lake, 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).
Average wind speed in September
Long Lake, SD
- Average wind speed in September: 9.6mph
The windiest months (with the highest average wind speed) are April and October (10.7mph).
The calmest month (with the lowest average wind speed) is August (8.2mph).
Average humidity in September
Long Lake, SD
- Average humidity in September: 61%
The month with the highest relative humidity is January (89%).
The months with the lowest relative humidity are August and September (61%).
Average rainfall in September
Long Lake, SD
- Average rainfall in September: 1.14"
The wettest month (with the highest rainfall) is June (2.83").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in September
Long Lake, SD
- Average rainfall days in September: 8.4 days
The month with the highest number of rainy days is June (14.3 days).
The month with the least rainy days is January (1.7 days).
Average snowfall in September
Long Lake, SD
- Average snowfall in September: 0"
The months with the highest snowfall are January and December (2.76").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Long Lake, SD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Long Lake, SD
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in September
Long Lake, SD
- Average sunshine days in September: 20.4 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (13.8 days).
Average UV index in September
Long Lake, 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, November and December (UV index 1).
Average cloud cover in September
Long Lake, SD
- Average cloud cover in September: 27
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in September
Long Lake, SD
- Average visibility in September: 6mi
The months with the highest visibility are February, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and March (5mi).
Long Lake, South Dakota, USA
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