September weather forecastDeerbrook, WI
September
Weather in September
September, the first month of the autumn in Deerbrook, is still a refreshing month, with temperature in the range of an average low of 48°F (8.9°C) and an average high of 67.1°F (19.5°C).Temperature
September's onset corresponds with a subtle shift in the average high-temperature, slightly moving from a moderately hot 75.2°F (24°C) in August to a comfortable 67.1°F (19.5°C). September nights cool down to an average low-temperature of 48°F (8.9°C).Humidity
In Deerbrook, the average relative humidity in September is 80%.Rainfall
In Deerbrook, in September, during 12.4 rainfall days, 1.73" (44mm) of precipitation is typically accumulated. Throughout the year, in Deerbrook, there are 120.4 rainfall days, and 22.99" (584mm) of precipitation is accumulated.Snowfall
In Deerbrook, snow does not fall in June through September.Daylight
In Deerbrook, the average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 6:19 am and sunset at 7:33 pm. On the last day of September, sunrise is at 6:54 am and sunset at 6:38 pm CDT.
Sunshine
In September, the average sunshine in Deerbrook is 7.6h.UV index
In September, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: A maximum high UV index of 3 in September translates into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Deerbrook, WI
- Average high temperature in September: 67.1°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 (19.8°F).
- Average low temperature in September: 48°F
The month with the highest average low temperature is July (56.5°F).
The coldest month (with the lowest average low temperature) is January (8.4°F).
Average pressure in September
Deerbrook, WI
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Deerbrook, WI
- Average wind speed in September: 7.3mph
The windiest months (with the highest average wind speed) are April and November (8.5mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).
Average humidity in September
Deerbrook, WI
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is May (72%).
Average rainfall in September
Deerbrook, WI
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is June (2.83").
The driest month (with the least rainfall) is January (1.02").
Average rainfall days in September
Deerbrook, WI
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is May (16.1 days).
The month with the least rainy days is February (2.4 days).
Average snowfall in September
Deerbrook, WI
- Average snowfall in September: 0"
The month with the highest snowfall is February (7.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Deerbrook, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (20.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Deerbrook, 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
Deerbrook, WI
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is September (15.3 days).
The month with the least sunshine days is February (10.8 days).
Average UV index in September
Deerbrook, 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
Deerbrook, WI
- Average cloud cover in September: 46
The months with the most cloud cover are January and February (Cloud cover 79).
The month with the least cloud cover is July (Cloud cover 40).
Average visibility in September
Deerbrook, 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 and February (4mi).
