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 advent of September brings a slight shift in average high-temperature, moving from a moderately hot 77.2°F (25.1°C) in August to a pleasant 68.4°F (20.2°C). During the month of September, the temperature falls to an average of 49.1°F (9.5°C).Humidity
In September, the average relative humidity is 79%.Rainfall
In September, the rain falls for 12.4 days. Throughout September, 1.57" (40mm) of precipitation is accumulated. Throughout the year, there are 114.4 rainfall days, and 20.79" (528mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September in Stone Lake is 12h and 31min.On the first day of the month, sunrise is at 6:28 am and sunset at 7:43 pm. On the last day of September, in Stone Lake, sunrise is at 7:04 am and sunset at 6:47 pm CDT.
Sunshine
In Stone Lake, the average sunshine in September is 8h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: In September, the maximum UV index of 4 suggests this advice:
Be vigilant - Suggestions to stave off sun damage are provided. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Stone Lake?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Stone Lake have in September?
What is the UV index reading in September?
Average temperature in September
Stone Lake, WI
- Average high temperature in September: 68.4°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (17.4°F).
- Average low temperature in September: 49.1°F
The month with the highest average low temperature is July (58.3°F).
The coldest month (with the lowest average low temperature) is January (5°F).
Average pressure in September
Stone Lake, WI
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Stone Lake, WI
- Average wind speed in September: 7.4mph
The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in September
Stone Lake, WI
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (92%).
The month with the lowest relative humidity is May (72%).
Average rainfall in September
Stone Lake, WI
- Average rainfall in September: 1.57"
The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is January (0.71").
Average rainfall days in September
Stone Lake, WI
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is January (2.3 days).
Average snowfall in September
Stone Lake, WI
- Average snowfall in September: 0"
The month with the highest snowfall is December (7.17").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Stone Lake, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (19 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Stone Lake, WI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 6min).
Average sunshine days in September
Stone Lake, WI
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is September (16.2 days).
The month with the least sunshine days is April (10.9 days).
Average UV index in September
Stone Lake, WI
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Stone Lake, WI
- Average cloud cover in September: 42
The month with the most cloud cover is January (Cloud cover 80).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in September
Stone Lake, WI
- Average visibility in September: 5mi
The months with the highest visibility are May, June and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
Stone Lake, Wisconsin, USA
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