September weather forecastDonald, WI
September
Weather in September
The first month of the autumn, September, is also an agreeable month in Donald, Wisconsin, with an average temperature varying between 49.5°F (9.7°C) and 68.9°F (20.5°C).Temperature
September implies a soft temperature shift, with average high-temperatures reducing from August's moderately hot 76.6°F (24.8°C) to a pleasant 68.9°F (20.5°C). In the month of September, Donald's average low-temperature falls to a frosty 49.5°F (9.7°C).Humidity
The average relative humidity in September in Donald is 80%.Rainfall
In Donald, in September, it is raining for 13.2 days, with typically 1.85" (47mm) of accumulated precipitation. Throughout the year, in Donald, Wisconsin, there are 137.4 rainfall days, and 26.26" (667mm) of precipitation is accumulated.Snowfall
In Donald, snow does not fall in June through September.Daylight
In September, the average length of the day in Donald is 12h and 31min.On the first day of the month, sunrise is at 6:26 am and sunset at 7:40 pm. On the last day of September, sunrise is at 7:01 am and sunset at 6:45 pm CDT.
Sunshine
The average sunshine in September is 8.4h.UV index
In Donald, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: The average daily UV index of 4 in September transforms into the following instructions:
Take necessary precautions - Suggestions to elude sunburn are provided. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Donald, WI
- Average high temperature in September: 68.9°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (18.7°F).
- Average low temperature in September: 49.5°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (6.1°F).
Average pressure in September
Donald, 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 (29.89"Hg).
Average wind speed in September
Donald, WI
- Average wind speed in September: 7.5mph
The windiest month (with the highest average wind speed) is April (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in September
Donald, 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 (76%).
Average rainfall in September
Donald, WI
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is June (4.06").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in September
Donald, WI
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is May (18.3 days).
The months with the least rainy days are January and February (3.7 days).
Average snowfall in September
Donald, WI
- Average snowfall in September: 0"
The month with the highest snowfall is February (7.44").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Donald, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (17.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Donald, 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: 8h and 24min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The months with the least sunshine are January and February (Average sunshine: 2h and 48min).
Average sunshine days in September
Donald, WI
- Average sunshine days in September: 14.1 days
The month with the most sunshine days is October (15.6 days).
The month with the least sunshine days is June (9.3 days).
Average UV index in September
Donald, WI
- Average UV index in September: 4
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
Donald, WI
- Average cloud cover in September: 38
The months with the most cloud cover are January and February (Cloud cover 72).
The months with the least cloud cover are July and August (Cloud cover 36).
Average visibility in September
Donald, 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 and February (4mi).
