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
Onset of September comes with a temperature decline, the average high falling from a moderately hot 77°F (25°C) in August to a comfortable 67.6°F (19.8°C). Throughout September, Longville's nights cool down to an average of 48.4°F (9.1°C).Humidity
In September, the average relative humidity is 74%.Rainfall
In September, the rain falls for 11.4 days. Throughout September, 1.57" (40mm) of precipitation is accumulated. Throughout the year, there are 106.8 rainfall days, and 19.53" (496mm) of precipitation is accumulated.Snowfall
In Longville, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 32min.On the first day of September in Longville, sunrise is at 6:37 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 6:57 pm CDT.
Sunshine
The average sunshine in September is 8.2h.UV index
The average daily maximum UV index in September is 4. 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 daily high UV index of 4 in September translates into this advice:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Longville have in September?
What time are sunrise and sunset in September in Longville?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Longville, MN
- Average high temperature in September: 67.6°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (16.5°F).
- Average low temperature in September: 48.4°F
The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (2.3°F).
Average pressure in September
Longville, MN
- Average pressure in September: 29.98"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
Longville, MN
- Average wind speed in September: 7.4mph
The windiest months (with the highest average wind speed) are April and October (7.6mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in September
Longville, MN
- Average humidity in September: 74%
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
Longville, MN
- Average rainfall in September: 1.57"
The wettest month (with the highest rainfall) is June (2.87").
The driest month (with the least rainfall) is February (0.67").
Average rainfall days in September
Longville, MN
- Average rainfall days in September: 11.4 days
The month with the highest number of rainy days is June (15.2 days).
The month with the least rainy days is February (1.8 days).
Average snowfall in September
Longville, MN
- Average snowfall in September: 0"
The month with the highest snowfall is December (8.03").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Longville, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (17.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Longville, MN
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 0min).
Average sunshine days in September
Longville, MN
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is August (17.8 days).
The month with the least sunshine days is March (12.2 days).
Average UV index in September
Longville, 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
Longville, MN
- Average cloud cover in September: 40
The month with the most cloud cover is January (Cloud cover 79).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in September
Longville, MN
- Average visibility in September: 6mi
The months with the highest visibility are May, June, September and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
Longville, Minnesota, USA
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