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
With September's arrival, Okreek's weather changes as the average high-temperature falls from 85.8°F (29.9°C) in August to a still warm 76.6°F (24.8°C). Throughout the month of September, Okreek sees a steady low-temperature average of 56.3°F (13.5°C).Humidity
August and September, with an average relative humidity of 57%, are the least humid months.Rainfall
In Okreek, South Dakota, in September, it is raining for 9.5 days, with typically 1.34" (34mm) of accumulated precipitation. Throughout the year, there are 103.9 rainfall days, and 16.85" (428mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Okreek, South Dakota.Daylight
In Okreek, the average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 7:06 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 7:23 pm CDT.
Sunshine
The average sunshine in September is 9h.UV index
The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: The UV index of 5 during September translates into the following guidance:
Guard yourself - Avoiding sunburn is suggested. To protect against the Sun's most potent rays, avoid direct exposure around midday. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Frequently asked questions
What is the usual temperature for Okreek in September?
What is the least humid month in Okreek?
What is the average humidity in September in Okreek?
How much does it rain in Okreek in September?
When it does not snow in Okreek?
Does it snow in Okreek in September?
How many hours of daylight does Okreek have in September?
When is the sunrise / sunset in September in Okreek?
How many hours of sunshine does Okreek have in September?
What is the UV index reading in September in Okreek?
Average temperature in September
Okreek, SD
- Average high temperature in September: 76.6°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in September: 56.3°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).
Average pressure in September
Okreek, SD
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Okreek, SD
- Average wind speed in September: 10.7mph
The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest month (with the lowest average wind speed) is August (9.8mph).
Average humidity in September
Okreek, SD
- Average humidity in September: 57%
The month with the highest relative humidity is January (82%).
The months with the lowest relative humidity are August and September (57%).
Average rainfall in September
Okreek, SD
- Average rainfall in September: 1.34"
The wettest month (with the highest rainfall) is June (2.8").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in September
Okreek, SD
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is June (15.3 days).
The months with the least rainy days are January and February (2.7 days).
Average snowfall in September
Okreek, SD
- Average snowfall in September: 0"
The month with the highest snowfall is December (3.19").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Okreek, SD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Okreek, 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: 9h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in September
Okreek, SD
- Average sunshine days in September: 17.9 days
The month with the most sunshine days is November (20.8 days).
The month with the least sunshine days is June (11.2 days).
Average UV index in September
Okreek, 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 December (UV index 1).
Average cloud cover in September
Okreek, SD
- Average cloud cover in September: 22
The month with the most cloud cover is January (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 20).
Average visibility in September
Okreek, 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).
Okreek, South Dakota, USA
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