September weather forecastStrum, WI
September
Weather in September
September, the first month of the autumn in Strum, is still a pleasant month, with an average temperature fluctuating between 70.5°F (21.4°C) and 50.4°F (10.2°C).Temperature
The onset of September aligns with a soft reduction in the average high-temperature, gently falling from a warm 76.6°F (24.8°C) in August to an agreeable 70.5°F (21.4°C). September sees the temperature falling to a mean low of 50.4°F (10.2°C).Humidity
The average relative humidity in September is 81%.Rainfall
In Strum, in September, it is raining for 12.4 days, with typically 2.17" (55mm) of accumulated precipitation. Throughout the year, there are 138.5 rainfall days, and 27.4" (696mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 30min.On the first day of the month, sunrise is at 6:29 am and sunset at 7:41 pm. On the last day of September, sunrise is at 7:03 am and sunset at 6:47 pm CDT.
Sunshine
In September, the average sunshine is 8.3h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 4 in September translates into these instructions:
Undertake precautions - Guarding against sun damage is counselled. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Strum, WI
- Average high temperature in September: 70.5°F
The warmest month (with the highest average high temperature) is July (78.1°F).
The month with the lowest average high temperature is January (19.8°F).
- Average low temperature in September: 50.4°F
The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (6.8°F).
Average pressure in September
Strum, WI
- Average pressure in September: 30.01"Hg
The months with the highest atmospheric pressure are January and February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Strum, WI
- Average wind speed in September: 7.5mph
The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in September
Strum, WI
- Average humidity in September: 81%
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
Strum, WI
- Average rainfall in September: 2.17"
The wettest month (with the highest rainfall) is June (4.41").
The driest month (with the least rainfall) is January (1.02").
Average rainfall days in September
Strum, WI
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is June (18.5 days).
The month with the least rainy days is January (3.6 days).
Average snowfall in September
Strum, WI
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.69").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Strum, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Strum, 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 18min
The months with the most sunshine are July and August (Average sunshine: 9h and 30min).
The months with the least sunshine are January and February (Average sunshine: 2h and 54min).
Average sunshine days in September
Strum, WI
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is October (16.2 days).
The month with the least sunshine days is June (9.6 days).
Average UV index in September
Strum, 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, February, November and December (UV index 1).
Average cloud cover in September
Strum, WI
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Strum, WI
- Average visibility in September: 5mi
The months with the highest visibility are April, May, June, October and November (6mi).
The month with the lowest visibility is January (4mi).
