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
In September, the average high-temperature marginally decreases from a moderately hot 77.9°F (25.5°C) in August to an agreeable 70.7°F (21.5°C). The average nighttime temperature lowers to a fresh 52.5°F (11.4°C) throughout September.Humidity
In Vermillion, the average relative humidity in September is 77%.Rainfall
In September, in Vermillion, the rain falls for 11.6 days. Throughout September, 2.17" (55mm) of precipitation is accumulated. In Vermillion, during the entire year, the rain falls for 124.8 days and collects up to 23.9" (607mm) of precipitation.Snowfall
June through September are months without snowfall in Vermillion.Daylight
In September, the average length of the day in Vermillion, Minnesota, is 12h and 30min.On the first day of the month, sunrise is at 6:35 am and sunset at 7:48 pm. On the last day of September, in Vermillion, sunrise is at 7:09 am and sunset at 6:53 pm CDT.
Sunshine
In Vermillion, Minnesota, the average sunshine in September is 8.8h.UV index
In Vermillion, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: During September, 4 as the daily maximum UV index converts into the following advice:
Be vigilant - Suggestions to stave off sun damage are provided. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Vermillion?
What is the average humidity in September in Vermillion?
How many days does it rain in September in Vermillion?
When it does not snow in Vermillion?
Does it snow in Vermillion in September?
How many hours of daylight does Vermillion have in September?
What time are sunrise and sunset in September in Vermillion?
How long on average sun shines in September in Vermillion?
How high is the UV index in September in Vermillion?
Average temperature in September
Vermillion, MN
- Average high temperature in September: 70.7°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (20.7°F).
- Average low temperature in September: 52.5°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (7.3°F).
Average pressure in September
Vermillion, MN
- Average pressure in September: 30"Hg
The months with the highest atmospheric pressure are January and February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Vermillion, MN
- Average wind speed in September: 7.7mph
The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).
Average humidity in September
Vermillion, MN
- Average humidity in September: 77%
The month with the highest relative humidity is January (91%).
The months with the lowest relative humidity are April and October (73%).
Average rainfall in September
Vermillion, MN
- Average rainfall in September: 2.17"
The wettest month (with the highest rainfall) is June (4.17").
The driest month (with the least rainfall) is January (0.71").
Average rainfall days in September
Vermillion, MN
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (2.6 days).
Average snowfall in September
Vermillion, MN
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.79").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Vermillion, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Vermillion, MN
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in September
Vermillion, MN
- Average sunshine days in September: 16.4 days
The month with the most sunshine days is December (17.5 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in September
Vermillion, MN
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Vermillion, MN
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Vermillion, 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).
Vermillion, Minnesota, USA
Weather forecast for your location
2. Allow the app to use your location