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
The shift to September brings a decrease in the average high-temperature, falling from a warm 82.6°F (28.1°C) in August to a pleasant 73°F (22.8°C). Black Horse records a steady low-temperature average of 54°F (12.2°C) during September.Humidity
August and September, with an average relative humidity of 51%, are the least humid months in Black Horse.Rainfall
In Black Horse, during September, the rain falls for 7.6 days and regularly aggregates up to 1.02" (26mm) of precipitation. Throughout the year, there are 101.3 rainfall days, and 14.25" (362mm) of precipitation is accumulated.Snowfall
In Black Horse, snow does not fall in June through September.Daylight
In September, the average length of the day in Black Horse is 12h and 31min.On the first day of the month, sunrise is at 6:07 am and sunset at 7:22 pm. On the last day of September, sunrise is at 6:43 am and sunset at 6:26 pm MDT.
Sunshine
In September, the average sunshine in Black Horse, South Dakota, is 9.7h.UV index
In Black Horse, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Frequently asked questions
What is the average September temperature in Black Horse?
What is the least humid month in Black Horse?
What is the average humidity in September in Black Horse?
How much does it rain in Black Horse in September?
When it does not snow in Black Horse?
Does it snow in Black Horse in September?
What is the average length of the day in September in Black Horse?
When are sunrise and sunset in September in Black Horse?
How many hours of sunshine does Black Horse have in September?
How high is the UV index in September in Black Horse?
Average temperature in September
Black Horse, SD
- Average high temperature in September: 73°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (25.2°F).
- Average low temperature in September: 54°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).
Average pressure in September
Black Horse, SD
- Average pressure in September: 29.94"Hg
The month with the highest atmospheric pressure is February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Black Horse, SD
- Average wind speed in September: 10.7mph
The windiest month (with the highest average wind speed) is April (11.7mph).
The calmest month (with the lowest average wind speed) is August (9.6mph).
Average humidity in September
Black Horse, SD
- Average humidity in September: 51%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are August and September (51%).
Average rainfall in September
Black Horse, SD
- Average rainfall in September: 1.02"
The wettest month (with the highest rainfall) is June (2.28").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in September
Black Horse, SD
- Average rainfall days in September: 7.6 days
The month with the highest number of rainy days is June (15.1 days).
The month with the least rainy days is January (2.9 days).
Average snowfall in September
Black Horse, SD
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Black Horse, SD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Black Horse, 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 48min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is August (Average sunshine: 11h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in September
Black Horse, SD
- Average sunshine days in September: 19.2 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (11.7 days).
Average UV index in September
Black Horse, SD
- Average UV index in September: 4
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
Black Horse, SD
- Average cloud cover in September: 23
The months with the most cloud cover are January and February (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 20).
Average visibility in September
Black Horse, 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).
Black Horse, South Dakota, USA
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