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 onset of September aligns with a soft reduction in the average high-temperature, gently falling from a moderately hot 77.5°F (25.3°C) in August to an agreeable 70.9°F (21.6°C). Wisconsin Dells's nighttime temperature during September is consistently averaged at a cool 51.1°F (10.6°C).Humidity
The average relative humidity in September in Wisconsin Dells is 80%.Rainfall
In Wisconsin Dells, in September, it is raining for 7.2 days, with typically 0.67" (17mm) of accumulated precipitation. In Wisconsin Dells, during the entire year, the rain falls for 94.1 days and collects up to 8.46" (215mm) of precipitation.Snowfall
In Wisconsin Dells, snow does not fall in May through September.Daylight
In Wisconsin Dells, the average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:23 am and sunset at 7:34 pm. On the last day of September, sunrise is at 6:56 am and sunset at 6:41 pm CDT.
Sunshine
In Wisconsin Dells, the average sunshine in September is 8.8h.UV index
In September, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 3 in September interprets into the following advice:
Heed the precautions - Suggestions to avoid sunburn are made. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Wisconsin Dells?
What is the average humidity in September in Wisconsin Dells?
How much does it rain in Wisconsin Dells in September?
When it does not snow in Wisconsin Dells?
Does it snow in Wisconsin Dells in September?
How many hours of daylight does Wisconsin Dells have in September?
When are sunrise and sunset in September in Wisconsin Dells?
How many hours of sunshine does Wisconsin Dells have in September?
How high is the UV index in September in Wisconsin Dells?
Average temperature in September
Wisconsin Dells, WI
- Average high temperature in September: 70.9°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (22.5°F).
- Average low temperature in September: 51.1°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (10°F).
Average pressure in September
Wisconsin Dells, WI
- Average pressure in September: 30.02"Hg
The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Wisconsin Dells, WI
- Average wind speed in September: 7.5mph
The windiest month (with the highest average wind speed) is April (9.8mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in September
Wisconsin Dells, WI
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
Wisconsin Dells, WI
- Average rainfall in September: 0.67"
The wettest month (with the highest rainfall) is June (1.18").
The driest month (with the least rainfall) is January (0.31").
Average rainfall days in September
Wisconsin Dells, WI
- Average rainfall days in September: 7.2 days
The month with the highest number of rainy days is June (13.3 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in September
Wisconsin Dells, WI
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.01").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Wisconsin Dells, 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
Wisconsin Dells, WI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in September
Wisconsin Dells, WI
- Average sunshine days in September: 19.8 days
The month with the most sunshine days is November (21.7 days).
The month with the least sunshine days is June (14.1 days).
Average UV index in September
Wisconsin Dells, WI
- Average UV index in September: 3
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
Wisconsin Dells, WI
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Wisconsin Dells, 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).
Wisconsin Dells, Wisconsin, USA
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