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, the average high-temperature subtly recedes from August's warm 77.4°F (25.2°C) to an agreeable 71.4°F (21.9°C). An average low-temperature of 52°F (11.1°C) is noted during the nights in September.Humidity
In September, the average relative humidity in Cottage Grove, Wisconsin, is 81%.Rainfall
In Cottage Grove, during September, the rain falls for 11.9 days and regularly aggregates up to 2.32" (59mm) of precipitation. Throughout the year, there are 134.9 rainfall days, and 26.34" (669mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In Cottage Grove, Wisconsin, the average length of the day in September is 12h and 29min.On the first day of September in Cottage Grove, Wisconsin, sunrise is at 6:22 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 6:39 pm CDT.
Sunshine
In September, the average sunshine in Cottage Grove, Wisconsin, is 8.5h.UV index
The average daily maximum UV index in September in Cottage Grove is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: An average UV index of 3 in September transforms into this advice:
Take necessary precautions - Protection from skin and eye injury is mandatory. To protect against the Sun's most potent rays, avoid direct exposure around midday. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Cottage Grove in September?
What is the average humidity in September in Cottage Grove?
How many days does it rain in September in Cottage Grove?
When it does not snow in Cottage Grove?
Does it snow in Cottage Grove in September?
How many hours of daylight does Cottage Grove have in September?
When is the sunrise / sunset in September in Cottage Grove?
How many hours of sunshine does Cottage Grove have in September?
How high is the UV index in September in Cottage Grove?
Average temperature in September
Cottage Grove, WI
- Average high temperature in September: 71.4°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (24.1°F).
- Average low temperature in September: 52°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).
Average pressure in September
Cottage Grove, WI
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Cottage Grove, WI
- Average wind speed in September: 7.5mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in September
Cottage Grove, WI
- Average humidity in September: 81%
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
Cottage Grove, WI
- Average rainfall in September: 2.32"
The wettest month (with the highest rainfall) is June (3.5").
The driest months (with the least rainfall) are January and February (1.1").
Average rainfall days in September
Cottage Grove, WI
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (4 days).
Average snowfall in September
Cottage Grove, WI
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.41").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Cottage Grove, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.9 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, WI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in September
Cottage Grove, WI
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is December (17.5 days).
The month with the least sunshine days is June (10.7 days).
Average UV index in September
Cottage Grove, WI
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Cottage Grove, WI
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in September
Cottage Grove, WI
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Cottage Grove, Wisconsin, USA
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