September weather forecastLittle Suamico, WI
September
Weather in September
September, the first month of the autumn in Little Suamico, is also an agreeable month, with temperature in the range of an average high of 69.4°F (20.8°C) and an average low of 51.8°F (11°C).Temperature
With the arrival of September, Little Suamico experiences a modest decline in average high-temperatures, transitioning from a warm 77.4°F (25.2°C) in August to a pleasant 69.4°F (20.8°C). During September, Little Suamico experiences an average low-temperature of 51.8°F (11°C) at night.Humidity
In September, the average relative humidity is 79%.Rainfall
In Little Suamico, in September, it is raining for 11.8 days, with typically 1.69" (43mm) of accumulated precipitation. In Little Suamico, during the entire year, the rain falls for 125.6 days and collects up to 24.53" (623mm) of precipitation.Snowfall
In Little Suamico, snow does not fall in June through September.Daylight
In Little Suamico, the average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 6:15 am and sunset at 7:28 pm. On the last day of September, sunrise is at 6:49 am and sunset at 6:34 pm CDT.
Sunshine
In Little Suamico, the average sunshine in September is 8.6h.UV index
In Little Suamico, 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 exposure to the Sun's UV rays for ordinary individuals.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Ensure safety - Sun damage prevention is strongly urged. Direct Sun exposure should be minimized especially during midday when radiation is most intense. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Little Suamico, WI
- Average high temperature in September: 69.4°F
The warmest month (with the highest average high temperature) is July (78.3°F).
The month with the lowest average high temperature is January (22.5°F).
- Average low temperature in September: 51.8°F
The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (12°F).
Average pressure in September
Little Suamico, WI
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Little Suamico, WI
- Average wind speed in September: 7.9mph
The windiest months (with the highest average wind speed) are January, February and April (9.6mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in September
Little Suamico, WI
- Average humidity in September: 79%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
Little Suamico, WI
- Average rainfall in September: 1.69"
The wettest month (with the highest rainfall) is May (3.35").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in September
Little Suamico, WI
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in September
Little Suamico, WI
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.83").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Little Suamico, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Little Suamico, WI
- Average daylight in September: 12h and 30min
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 36min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 3h and 30min).
Average sunshine days in September
Little Suamico, WI
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is December (18.1 days).
The month with the least sunshine days is April (12.8 days).
Average UV index in September
Little Suamico, WI
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Little Suamico, WI
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Little Suamico, WI
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).





