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 correlates with a minor temperature reduction, down from August's warm 76.1°F (24.5°C) to a pleasant 68.9°F (20.5°C). During the month of September, Nelsonville experiences a steady low-temperature average of 50.9°F (10.5°C).Humidity
The average relative humidity in September is 80%.Rainfall
In Nelsonville, in September, it is raining for 12.3 days, with typically 1.77" (45mm) of accumulated precipitation. Throughout the year, there are 123.2 rainfall days, and 23.54" (598mm) of precipitation is accumulated.Snowfall
In Nelsonville, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 30min.On the first day of the month, sunrise is at 6:20 am and sunset at 7:33 pm. On the last day of September, sunrise is at 6:54 am and sunset at 6:39 pm CDT.
Sunshine
In September, the average sunshine is 8.3h.UV index
The average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: A daily maximum UV index of 3 in September translates into the following instructions:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
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 Nelsonville have in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Nelsonville, WI
- Average high temperature in September: 68.9°F
The warmest month (with the highest average high temperature) is July (77.4°F).
The month with the lowest average high temperature is January (20.5°F).
- Average low temperature in September: 50.9°F
The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (9°F).
Average pressure in September
Nelsonville, WI
- Average pressure in September: 30.02"Hg
The months with the highest atmospheric pressure are January and February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Nelsonville, WI
- Average wind speed in September: 8mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (7.2mph).
Average humidity in September
Nelsonville, WI
- Average humidity in September: 80%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
Nelsonville, WI
- Average rainfall in September: 1.77"
The wettest month (with the highest rainfall) is June (3.23").
The driest month (with the least rainfall) is February (0.91").
Average rainfall days in September
Nelsonville, WI
- Average rainfall days in September: 12.3 days
The month with the highest number of rainy days is May (16.1 days).
The month with the least rainy days is January (2.8 days).
Average snowfall in September
Nelsonville, WI
- Average snowfall in September: 0"
The month with the highest snowfall is December (5.2").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Nelsonville, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Nelsonville, WI
- 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 2min
The month with the most sunshine is July (Average sunshine: 9h and 30min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in September
Nelsonville, WI
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is November (17 days).
The months with the least sunshine days are April, May and June (12.7 days).
Average UV index in September
Nelsonville, WI
- Average UV index in September: 3
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
Nelsonville, WI
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 70).
The months with the least cloud cover are July and August (Cloud cover 36).
Average visibility in September
Nelsonville, WI
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, July and December (5mi).
Nelsonville, Wisconsin, USA
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