September weather forecastGreenwood, WI
September
Weather in September
September, the first month of the autumn in Greenwood, is still a pleasant month, with an average temperature ranging between min 50.2°F (10.1°C) and max 69.4°F (20.8°C).Temperature
September's arrival aligns with a minor decrease in average high-temperatures, from August's warm 76.3°F (24.6°C) to an agreeable 69.4°F (20.8°C). The low-temperature averages to a cool 50.2°F (10.1°C) during the nights of September.Humidity
The average relative humidity in September in Greenwood is 80%.Rainfall
In Greenwood, during September, the rain falls for 10.6 days and regularly aggregates up to 1.22" (31mm) of precipitation. In Greenwood, during the entire year, the rain falls for 117.6 days and collects up to 15.75" (400mm) of precipitation.Snowfall
June through September are months without snowfall in Greenwood.Daylight
In Greenwood, the average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 6:25 am and sunset at 7:38 pm. On the last day of September, in Greenwood, sunrise is at 7:00 am and sunset at 6:44 pm CDT.
Sunshine
The average sunshine in September in Greenwood is 8.4h.UV index
In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high UV index of 3 in September translates into the following recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Greenwood, WI
- Average high temperature in September: 69.4°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (19.6°F).
- Average low temperature in September: 50.2°F
The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (6.8°F).
Average pressure in September
Greenwood, WI
- Average pressure in September: 30.01"Hg
The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Greenwood, WI
- Average wind speed in September: 7.8mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in September
Greenwood, 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 (77%).
Average rainfall in September
Greenwood, WI
- Average rainfall in September: 1.22"
The wettest month (with the highest rainfall) is June (2.13").
The driest month (with the least rainfall) is February (0.59").
Average rainfall days in September
Greenwood, WI
- Average rainfall days in September: 10.6 days
The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is February (3.2 days).
Average snowfall in September
Greenwood, WI
- Average snowfall in September: 0"
The month with the highest snowfall is December (3.9").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Greenwood, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Greenwood, WI
- Average daylight in September: 12h and 30min
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 24min
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 54min).
Average sunshine days in September
Greenwood, WI
- Average sunshine days in September: 16.6 days
The month with the most sunshine days is October (17.5 days).
The month with the least sunshine days is May (12 days).
Average UV index in September
Greenwood, 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, February, November and December (UV index 1).
Average cloud cover in September
Greenwood, WI
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 71).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in September
Greenwood, WI
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, September, October and November (6mi).
The months with the lowest visibility are January, February, March, July, August and December (5mi).
