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 signals a subtle shift in temperature, down from a moderately hot 75.6°F (24.2°C) in August to a pleasant 68.2°F (20.1°C). During September, the nighttime temperature averages of 49.6°F (9.8°C).Humidity
In September, the average relative humidity is 80%.Rainfall
In September, the rain falls for 9.2 days. Throughout September, 0.75" (19mm) of precipitation is accumulated. In Birnamwood, during the entire year, the rain falls for 103 days and collects up to 11.02" (280mm) of precipitation.Snowfall
In Birnamwood, snow does not fall in June through September.Daylight
The average length of the day in September in Birnamwood is 12h and 31min.On the first day of September in Birnamwood, sunrise is at 6:19 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 6:38 pm CDT.
Sunshine
In September, the average sunshine in Birnamwood is 8.1h.UV index
In Birnamwood, Wisconsin, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: A typical high UV index of 3 in September suggests the following recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. The solar radiation around mid-day is intense; avoid the Sun and stay safe. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Frequently asked questions
What is the temperature in September in Birnamwood?
What is the average humidity in September in Birnamwood?
How many days does it rain in September in Birnamwood?
When it does not snow in Birnamwood?
Does it snow in Birnamwood in September?
How many hours of daylight does Birnamwood have in September?
When are sunrise and sunset in September in Birnamwood?
How long on average sun shines in September in Birnamwood?
What is the UV index intensity in September in Birnamwood?
Average temperature in September
Birnamwood, WI
- Average high temperature in September: 68.2°F
The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is January (19.8°F).
- Average low temperature in September: 49.6°F
The month with the highest average low temperature is July (58.5°F).
The coldest month (with the lowest average low temperature) is January (8.2°F).
Average pressure in September
Birnamwood, WI
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Birnamwood, WI
- Average wind speed in September: 7.7mph
The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in September
Birnamwood, 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 April (76%).
Average rainfall in September
Birnamwood, WI
- Average rainfall in September: 0.75"
The wettest months (with the highest rainfall) are May and June (1.46").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in September
Birnamwood, WI
- Average rainfall days in September: 9.2 days
The month with the highest number of rainy days is May (13.4 days).
The month with the least rainy days is February (2.9 days).
Average snowfall in September
Birnamwood, WI
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.17").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Birnamwood, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Birnamwood, 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 48min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in September
Birnamwood, WI
- Average sunshine days in September: 17.4 days
The month with the most sunshine days is October (18.3 days).
The month with the least sunshine days is April (13.4 days).
Average UV index in September
Birnamwood, 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 and December (UV index 1).
Average cloud cover in September
Birnamwood, WI
- Average cloud cover in September: 40
The month with the most cloud cover is January (Cloud cover 72).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility in September
Birnamwood, WI
- Average visibility in September: 5mi
The months with the highest visibility are April, May, June, October and November (6mi).
The months with the lowest visibility are January, February, March, July, August, September and December (5mi).
Birnamwood, Wisconsin, USA
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