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 commencement of September includes a gentle temperature shift, with the average high-temperature dropping a bit from a moderately hot 78.3°F (25.7°C) in August to a pleasant 71.2°F (21.8°C). The temperature in Viola lowers to an average of 50.9°F (10.5°C) during September nights.Humidity
In Viola, the average relative humidity in September is 80%.Rainfall
In Viola, during September, the rain falls for 12.1 days and regularly aggregates up to 2.48" (63mm) of precipitation. Throughout the year, in Viola, Wisconsin, there are 130.6 rainfall days, and 28.58" (726mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Viola.Daylight
In September, the average length of the day is 12h and 29min.On the first day of September in Viola, sunrise is at 6:27 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:44 pm CDT.
Sunshine
In September, the average sunshine in Viola is 8.6h.UV index
In September, the average daily maximum UV index in Viola is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily high UV index of 3 during September translates into the following recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Frequently asked questions
What are September temperatures in Viola?
What is the average humidity in September in Viola?
How much does it rain in Viola in September?
When it does not snow in Viola?
Does it snow in Viola in September?
What is the average length of the day in September in Viola?
When are sunrise and sunset in September in Viola?
How many hours of sunshine does Viola have in September?
What is the UV index reading in September in Viola?
Average temperature in September
Viola, WI
- Average high temperature in September: 71.2°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (22.1°F).
- Average low temperature in September: 50.9°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (9.3°F).
Average pressure in September
Viola, WI
- Average pressure in September: 30.02"Hg
The months with the highest atmospheric pressure are January and February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Viola, WI
- Average wind speed in September: 7.2mph
The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in September
Viola, WI
- Average humidity in September: 80%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is April (77%).
Average rainfall in September
Viola, WI
- Average rainfall in September: 2.48"
The wettest month (with the highest rainfall) is June (4.8").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in September
Viola, WI
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is February (3.1 days).
Average snowfall in September
Viola, WI
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.38").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Viola, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Viola, WI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 8h and 4min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in September
Viola, WI
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is December (17.4 days).
The month with the least sunshine days is June (9.8 days).
Average UV index in September
Viola, 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, November and December (UV index 1).
Average cloud cover in September
Viola, WI
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Viola, WI
- Average visibility in September: 5mi
The months with the highest visibility are April, May, October and November (6mi).
The month with the lowest visibility is January (4mi).
Viola, Wisconsin, USA
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