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
With the onset of September, Cottage Grove's climate undergoes a slight change as the average high-temperature moves from a moderately hot 78.4°F (25.8°C) in August to a pleasant 71.4°F (21.9°C). Cottage Grove's average low-temperature in September is measured at a fresh 52.9°F (11.6°C).Humidity
The average relative humidity in September is 75%.Rainfall
In Cottage Grove, in September, during 12.6 rainfall days, 1.93" (49mm) of precipitation is typically accumulated. Throughout the year, there are 128.1 rainfall days, and 22.83" (580mm) of precipitation is accumulated.Snowfall
In Cottage Grove, snow does not fall in June through September.Daylight
In Cottage Grove, the average length of the day in September is 12h and 31min.On the first day of September in Cottage Grove, sunrise is at 6:34 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 6:53 pm CDT.
Sunshine
The average sunshine in September is 8.7h.UV index
In Cottage Grove, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In September, an average UV index of 4 transforms into the following instructions:
Take necessary precautions - Protection from skin and eye injury is mandatory. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Cottage Grove?
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 Cottage Grove have 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
Cottage Grove, MN
- Average high temperature in September: 71.4°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (20.7°F).
- Average low temperature in September: 52.9°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (7.5°F).
Average pressure in September
Cottage Grove, MN
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Cottage Grove, MN
- Average wind speed in September: 7.6mph
The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in September
Cottage Grove, MN
- Average humidity in September: 75%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is April (72%).
Average rainfall in September
Cottage Grove, MN
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is June (3.74").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days in September
Cottage Grove, MN
- Average rainfall days in September: 12.6 days
The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (3 days).
Average snowfall in September
Cottage Grove, MN
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.91").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Cottage Grove, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Cottage Grove, 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 4min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in September
Cottage Grove, MN
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is June (10.4 days).
Average UV index in September
Cottage Grove, 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
Cottage Grove, MN
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 68).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in September
Cottage Grove, 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).
Cottage Grove, Minnesota, USA
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