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
As Blackduck enters September, the average high-temperature decreases from the a warm 74.8°F (23.8°C) of August to a refreshing 65.8°F (18.8°C). Throughout the month of September, Blackduck expects an average low of 48.6°F (9.2°C).Humidity
The average relative humidity in September is 73%.Rainfall
In Blackduck, in September, during 12.2 rainfall days, 1.69" (43mm) of precipitation is typically accumulated. Throughout the year, there are 109.2 rainfall days, and 20.12" (511mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall in Blackduck. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.04" (1mm) of snow. In Blackduck, during the entire year, snow falls for 97.9 days and aggregates up to 36.77" (934mm) of snow.Daylight
In Blackduck, the average length of the day in September is 12h and 33min.On the first day of September, sunrise is at 6:37 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 6:58 pm CDT.
Sunshine
The average sunshine in September is 8.3h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. To cut down UV radiation exposure by about half, sport a wide-brim hat. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How many days does it rain in September?
When does it start snowing in Blackduck?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Blackduck have in September?
What is the UV index intensity in September?
Average temperature in September
Blackduck, MN
- Average high temperature in September: 65.8°F
The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is January (16.2°F).
- Average low temperature in September: 48.6°F
The month with the highest average low temperature is July (57.4°F).
The coldest month (with the lowest average low temperature) is January (2.1°F).
Average pressure in September
Blackduck, MN
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Blackduck, MN
- Average wind speed in September: 8.4mph
The windiest month (with the highest average wind speed) is October (8.8mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in September
Blackduck, MN
- Average humidity in September: 73%
The months with the highest relative humidity are January and February (93%).
The month with the lowest relative humidity is May (70%).
Average rainfall in September
Blackduck, MN
- Average rainfall in September: 1.69"
The wettest month (with the highest rainfall) is June (3.07").
The driest month (with the least rainfall) is February (0.71").
Average rainfall days in September
Blackduck, MN
- Average rainfall days in September: 12.2 days
The month with the highest number of rainy days is June (16.4 days).
The month with the least rainy days is January (1.3 days).
Average snowfall in September
Blackduck, MN
- Average snowfall in September: 0.04"
The month with the highest snowfall is December (7.28").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Blackduck, MN
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is December (18.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Blackduck, MN
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 6min).
Average sunshine days in September
Blackduck, MN
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is August (17.6 days).
The month with the least sunshine days is June (11.5 days).
Average UV index in September
Blackduck, MN
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Blackduck, MN
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 80).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Blackduck, MN
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
Blackduck, Minnesota, USA
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