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
A mild shift in the average high-temperature occurs in September, reducing from a warm 78.1°F (25.6°C) in August to an agreeable 69.4°F (20.8°C). In Swanville, September is marked by an average low-temperature of 49.8°F (9.9°C).Humidity
In Swanville, Minnesota, the average relative humidity in September is 73%.Rainfall
In September, the rain falls for 8.6 days. Throughout September, 0.94" (24mm) of precipitation is accumulated. Throughout the year, there are 92.5 rainfall days, and 12.68" (322mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 31min.On the first day of September, sunrise is at 6:40 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 6:59 pm CDT.
Sunshine
In Swanville, the average sunshine in September is 8.7h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: A daily high UV index of 4 in September leads to these guidelines:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Swanville in September?
What is the average humidity in September in Swanville?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Swanville have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Swanville, MN
- Average high temperature in September: 69.4°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (17.8°F).
- Average low temperature in September: 49.8°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (4.5°F).
Average pressure in September
Swanville, MN
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Swanville, MN
- Average wind speed in September: 8.3mph
The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (7.2mph).
Average humidity in September
Swanville, MN
- Average humidity in September: 73%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is May (70%).
Average rainfall in September
Swanville, MN
- Average rainfall in September: 0.94"
The wettest month (with the highest rainfall) is June (2.44").
The driest month (with the least rainfall) is January (0.28").
Average rainfall days in September
Swanville, MN
- Average rainfall days in September: 8.6 days
The month with the highest number of rainy days is June (14.6 days).
The month with the least rainy days is February (0.9 days).
Average snowfall in September
Swanville, MN
- Average snowfall in September: 0"
The month with the highest snowfall is December (3.39").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Swanville, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (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
Swanville, MN
- 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 4min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in September
Swanville, MN
- Average sunshine days in September: 19.5 days
The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is June (12.9 days).
Average UV index in September
Swanville, MN
- Average UV index in September: 4
The months with the highest UV index are May, 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
Swanville, MN
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 70).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in September
Swanville, MN
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Swanville, Minnesota, USA
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