September weather forecastBurlington, WI
September
Weather in September
September signals the transition from hot summer months to milder autumn temperatures, peaking at around 71.1°F (21.7°C). Burlington's foliage starts to change color, transforming the city into a riotous spectacle of shades. Picnics and alfresco activities remain popular as the weather holds steadily pleasant, complemented by moderate rainfall. An added charm to the month is the longer daylight hours, hinting at the residual summer’s retreat. Meanwhile, the returning gusty winds foretell the arrival of a colder season.Temperature
The transition into September involves a small decrease in the average high-temperature, dipping slightly from a moderately hot 77.5°F (25.3°C) in August to a pleasant 71.1°F (21.7°C). An average nighttime temperature of 54.7°F (12.6°C) is witnessed throughout September.Humidity
In Burlington, the average relative humidity in September is 80%.Rainfall
In Burlington, Wisconsin, in September, during 13.3 rainfall days, 2.05" (52mm) of precipitation is typically accumulated. Throughout the year, there are 158.7 rainfall days, and 29.88" (759mm) of precipitation is accumulated.Snowfall
In Burlington, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 6:18 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 6:35 pm CDT.
Sunshine
In September, the average sunshine is 9h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 4 during September translates into the following directions:
Make use of precautions - It is urged to ward off sun damage. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Burlington, WI
- Average high temperature in September: 71.1°F
The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (25.7°F).
- Average low temperature in September: 54.7°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).
Average pressure in September
Burlington, WI
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Burlington, WI
- Average wind speed in September: 7.5mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in September
Burlington, WI
- Average humidity in September: 80%
The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April, October and November (77%).
Average rainfall in September
Burlington, WI
- Average rainfall in September: 2.05"
The wettest month (with the highest rainfall) is June (3.78").
The driest month (with the least rainfall) is February (1.54").
Average rainfall days in September
Burlington, WI
- Average rainfall days in September: 13.3 days
The month with the highest number of rainy days is May (19.2 days).
The month with the least rainy days is February (5.5 days).
Average snowfall in September
Burlington, WI
- Average snowfall in September: 0"
The month with the highest snowfall is January (5.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Burlington, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Burlington, WI
- Average daylight in September: 12h and 30min
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: 9h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in September
Burlington, WI
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is November (16 days).
The month with the least sunshine days is June (9 days).
Average UV index in September
Burlington, 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 and December (UV index 1).
Average cloud cover in September
Burlington, WI
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are August and September (Cloud cover 30).
Average visibility in September
Burlington, WI
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
