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
September's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from August's warm 77.2°F (25.1°C) to an agreeable 68.5°F (20.3°C). During September in Ottertail, the average low-temperature is recorded at a fresh 50°F (10°C).Humidity
In Ottertail, the average relative humidity in September is 71%.Rainfall
In Ottertail, during September, the rain falls for 9.8 days and regularly aggregates up to 1.18" (30mm) of precipitation. In Ottertail, during the entire year, the rain falls for 107.6 days and collects up to 17.83" (453mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 32min.On the first day of September, sunrise is at 6:43 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:03 pm CDT.
Sunshine
In September, the average sunshine is 8.7h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 4 during September translates into the following directions:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Ottertail, MN
- Average high temperature in September: 68.5°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 (16.2°F).
- Average low temperature in September: 50°F
The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (3.6°F).
Average pressure in September
Ottertail, 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
Ottertail, MN
- Average wind speed in September: 8.7mph
The windiest months (with the highest average wind speed) are April, October and November (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (7.5mph).
Average humidity in September
Ottertail, MN
- Average humidity in September: 71%
The months with the highest relative humidity are January and February (92%).
The month with the lowest relative humidity is May (69%).
Average rainfall in September
Ottertail, MN
- Average rainfall in September: 1.18"
The wettest month (with the highest rainfall) is June (2.95").
The driest months (with the least rainfall) are January and February (0.55").
Average rainfall days in September
Ottertail, MN
- Average rainfall days in September: 9.8 days
The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is February (2.4 days).
Average snowfall in September
Ottertail, MN
- Average snowfall in September: 0"
The month with the highest snowfall is December (4.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Ottertail, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (17.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Ottertail, 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 42min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in September
Ottertail, MN
- Average sunshine days in September: 18.3 days
The month with the most sunshine days is September (18.3 days).
The month with the least sunshine days is June (10.9 days).
Average UV index in September
Ottertail, 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
Ottertail, MN
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 73).
The months with the least cloud cover are July and August (Cloud cover 30).
Average visibility in September
Ottertail, MN
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
Ottertail, Minnesota, USA
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