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
A subtle change in temperatures is noted as August gives way to September, with average highs reducing from a moderately hot 77°F (25°C) to a pleasant 69.6°F (20.9°C). The nighttime temperature in Greenleaf, Wisconsin, dips to a fresh 52.2°F (11.2°C) on average during September.Humidity
The average relative humidity in September in Greenleaf, Wisconsin, is 80%.Rainfall
In Greenleaf, in September, it is raining for 12.5 days, with typically 1.73" (44mm) of accumulated precipitation. Throughout the year, there are 132.7 rainfall days, and 24.33" (618mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall in Greenleaf.Daylight
In Greenleaf, Wisconsin, the average length of the day in September is 12h and 30min.On the first day of the month, sunrise is at 6:16 am and sunset at 7:28 pm. On the last day of September, in Greenleaf, Wisconsin, sunrise is at 6:49 am and sunset at 6:34 pm CDT.
Sunshine
The average sunshine in September in Greenleaf, Wisconsin, is 8.6h.UV index
In Greenleaf, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: During September, 3 as the daily maximum UV index converts into the following advice:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Around midday, solar radiation is most harmful; hence, exposure should be limited. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Frequently asked questions
What is the usual temperature for Greenleaf in September?
What is the average humidity in September in Greenleaf?
How much does it rain in Greenleaf in September?
When it does not snow in Greenleaf?
Does it snow in Greenleaf in September?
How many hours of daylight does Greenleaf have in September?
When is the sunrise / sunset in September in Greenleaf?
How long on average sun shines in September in Greenleaf?
How high is the UV index in September in Greenleaf?
Average temperature in September
Greenleaf, WI
- Average high temperature in September: 69.6°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (22.5°F).
- Average low temperature in September: 52.2°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (11.8°F).
Average pressure in September
Greenleaf, WI
- Average pressure in September: 30.02"Hg
The months with the highest atmospheric pressure are February and March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Greenleaf, WI
- Average wind speed in September: 8mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in September
Greenleaf, WI
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
Greenleaf, WI
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is May (3.46").
The driest month (with the least rainfall) is January (0.98").
Average rainfall days in September
Greenleaf, WI
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is February (3.7 days).
Average snowfall in September
Greenleaf, WI
- Average snowfall in September: 0"
The month with the highest snowfall is December (4.09").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Greenleaf, 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
Greenleaf, 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 54min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The months with the least sunshine are January and February (Average sunshine: 3h and 30min).
Average sunshine days in September
Greenleaf, WI
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is July (10.7 days).
Average UV index in September
Greenleaf, WI
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Greenleaf, WI
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Greenleaf, WI
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Greenleaf, Wisconsin, USA
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