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
The arrival of September suggests a slight decrease in the average high-temperature, moving from a moderately hot 74.8°F (23.8°C) in August to a refreshing 66°F (18.9°C). Throughout the month of September, Cotton expects an average low of 47.1°F (8.4°C).Humidity
In September, the average relative humidity is 78%.Rainfall
In September, the rain falls for 14.3 days. Throughout September, 1.97" (50mm) of precipitation is accumulated. Throughout the year, there are 123.8 rainfall days, and 22.24" (565mm) of precipitation is accumulated.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 the month, sunrise is at 6:30 am and sunset at 7:49 pm. On the last day of September, sunrise is at 7:08 am and sunset at 6:50 pm CDT.
Sunshine
In Cotton, the average sunshine in September is 7.9h.UV index
In Cotton, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum daily UV index of 3 during September morphs into the following directions:
Ensure safety - Imperative it is to shield skin and eyes from damage. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
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 in Cotton?
How many days does it rain in September in Cotton?
When it does not snow in Cotton?
Does it snow in Cotton in September?
How many hours of daylight does Cotton have in September?
What time are sunrise and sunset in September in Cotton?
How long on average sun shines in September in Cotton?
What is the UV index reading in September?
Average temperature in September
Cotton, MN
- Average high temperature in September: 66°F
The warmest month (with the highest average high temperature) is July (76.5°F).
The month with the lowest average high temperature is January (14.4°F).
- Average low temperature in September: 47.1°F
The month with the highest average low temperature is July (56.1°F).
The coldest month (with the lowest average low temperature) is January (0°F).
Average pressure in September
Cotton, MN
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Cotton, MN
- Average wind speed in September: 8.1mph
The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in September
Cotton, MN
- Average humidity in September: 78%
The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is May (72%).
Average rainfall in September
Cotton, MN
- Average rainfall in September: 1.97"
The wettest month (with the highest rainfall) is June (2.83").
The driest months (with the least rainfall) are January and February (0.91").
Average rainfall days in September
Cotton, MN
- Average rainfall days in September: 14.3 days
The month with the highest number of rainy days is June (17.5 days).
The month with the least rainy days is February (1.5 days).
Average snowfall in September
Cotton, MN
- Average snowfall in September: 0"
The month with the highest snowfall is December (8.7").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Cotton, MN
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (21 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Cotton, MN
- Average daylight in September: 12h and 3min
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 36min).
- Average sunshine in September: 7h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 6min).
Average sunshine days in September
Cotton, MN
- Average sunshine days in September: 13.6 days
The month with the most sunshine days is September (13.6 days).
The month with the least sunshine days is June (9.5 days).
Average UV index in September
Cotton, MN
- Average UV index in September: 3
The months with the highest UV index are July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in September
Cotton, MN
- Average cloud cover in September: 44
The month with the most cloud cover is January (Cloud cover 80).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in September
Cotton, MN
- Average visibility in September: 5mi
The months with the highest visibility are May, June, July and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
Cotton, Minnesota, USA
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