September weather forecastTwin Town, WI
September
Weather in September
September, the first month of the autumn in Twin Town, is still a pleasant month, with an average temperature fluctuating between 68.9°F (20.5°C) and 49.6°F (9.8°C).Temperature
September heralds a minor drop in average high-temperature, sliding from August's warm 76.6°F (24.8°C) to a pleasant 68.9°F (20.5°C). September nights experience a consistent temperature drop to a frosty 49.6°F (9.8°C).Humidity
In September, the average relative humidity in Twin Town is 80%.Rainfall
In Twin Town, Wisconsin, in September, during 14 rainfall days, 2.09" (53mm) of precipitation is typically accumulated. In Twin Town, during the entire year, the rain falls for 134.8 days and collects up to 25.24" (641mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 31min.On the first day of September in Twin Town, sunrise is at 6:30 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:49 pm CDT.
Sunshine
The average sunshine in September is 8.3h.UV index
The average daily maximum UV index in September in Twin Town is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 4 during September translates into the following directions:
Take necessary precautions - Defending against sun damage is advocated. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Twin Town, WI
- Average high temperature in September: 68.9°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (17.6°F).
- Average low temperature in September: 49.6°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (5.2°F).
Average pressure in September
Twin Town, WI
- Average pressure in September: 30"Hg
The months with the highest atmospheric pressure are January and February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Twin Town, WI
- Average wind speed in September: 7.7mph
The windiest month (with the highest average wind speed) is April (9.2mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in September
Twin Town, WI
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (92%).
The month with the lowest relative humidity is May (76%).
Average rainfall in September
Twin Town, WI
- Average rainfall in September: 2.09"
The wettest month (with the highest rainfall) is June (4.06").
The driest month (with the least rainfall) is January (0.71").
Average rainfall days in September
Twin Town, WI
- Average rainfall days in September: 14 days
The month with the highest number of rainy days is June (19.5 days).
The month with the least rainy days is January (2.4 days).
Average snowfall in September
Twin Town, WI
- Average snowfall in September: 0"
The month with the highest snowfall is December (6.34").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Twin Town, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (17.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Twin Town, WI
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 8h and 18min
The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days in September
Twin Town, WI
- Average sunshine days in September: 13.8 days
The month with the most sunshine days is October (15.3 days).
The month with the least sunshine days is June (8.1 days).
Average UV index in September
Twin Town, WI
- 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 and December (UV index 1).
Average cloud cover in September
Twin Town, WI
- Average cloud cover in September: 39
The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in September
Twin Town, WI
- Average visibility in September: 5mi
The months with the highest visibility are May, June and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
