September weather forecastBrantwood, WI
September
Weather in September
September, the first month of the autumn in Brantwood, is also an enjoyable month, with an average temperature fluctuating between 67.1°F (19.5°C) and 48.4°F (9.1°C).Temperature
Brantwood in September undergoes a slight reduction in the average high-temperature, shifting from August's moderately hot 75.7°F (24.3°C) to an enjoyable 67.1°F (19.5°C). In the month of September, an average of 48.4°F (9.1°C) marks the low-temperature.Humidity
In September, the average relative humidity is 80%.Rainfall
In Brantwood, in September, it is raining for 14.3 days, with typically 1.61" (41mm) of accumulated precipitation. Throughout the year, there are 124.1 rainfall days, and 24.61" (625mm) of precipitation is accumulated.Snowfall
In Brantwood, Wisconsin, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 31min.On the first day of September, sunrise is at 6:22 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:41 pm CDT.
Sunshine
In Brantwood, the average sunshine in September is 7.6h.UV index
The average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In September, an average UV index of 3 transforms into the following instructions:
Adopt protective measures - Suggestions to resist sunburn are offered. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Brantwood, WI
- Average high temperature in September: 67.1°F
The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (18.3°F).
- Average low temperature in September: 48.4°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (6.6°F).
Average pressure in September
Brantwood, WI
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Brantwood, WI
- Average wind speed in September: 7.5mph
The windiest month (with the highest average wind speed) is April (8.8mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).
Average humidity in September
Brantwood, 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 (73%).
Average rainfall in September
Brantwood, WI
- Average rainfall in September: 1.61"
The wettest month (with the highest rainfall) is June (3.23").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in September
Brantwood, WI
- Average rainfall days in September: 14.3 days
The month with the highest number of rainy days is June (17.6 days).
The month with the least rainy days is January (1.8 days).
Average snowfall in September
Brantwood, WI
- Average snowfall in September: 0"
The month with the highest snowfall is December (8.23").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Brantwood, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (19.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Brantwood, 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: 7h and 36min
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 12min).
Average sunshine days in September
Brantwood, WI
- Average sunshine days in September: 13.3 days
The month with the most sunshine days is October (15.1 days).
The month with the least sunshine days is April (10.3 days).
Average UV index in September
Brantwood, WI
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Brantwood, WI
- Average cloud cover in September: 45
The months with the most cloud cover are January and February (Cloud cover 80).
The month with the least cloud cover is July (Cloud cover 40).
Average visibility in September
Brantwood, WI
- Average visibility in September: 5mi
The months with the highest visibility are May and June (6mi).
The months with the lowest visibility are January and February (4mi).
