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
With the onset of September, Saint Croix Falls experiences a modest temperature adjustment, with the average high-temperature gently receding from a warm 76.6°F (24.8°C) in August to a pleasant 69.4°F (20.8°C). Saint Croix Falls witnesses a consistent average low-temperature of 50.9°F (10.5°C) throughout September.Humidity
In September, the average relative humidity is 79%.Rainfall
In Saint Croix Falls, in September, during 12.6 rainfall days, 1.85" (47mm) of precipitation is typically accumulated. Throughout the year, there are 130.2 rainfall days, and 23.19" (589mm) of precipitation is accumulated.Snowfall
In Saint Croix Falls, snow does not fall in June through September.Daylight
In September, the average length of the day in Saint Croix Falls is 12h and 31min.On the first day of the month, sunrise is at 6:33 am and sunset at 7:47 pm. On the last day of September, sunrise is at 7:08 am and sunset at 6:52 pm CDT.
Sunshine
The average sunshine in September is 8.5h.UV index
In Saint Croix Falls, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum UV index of 4 in September translates into the following recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How many days 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 long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Saint Croix Falls, WI
- Average high temperature in September: 69.4°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (18.3°F).
- Average low temperature in September: 50.9°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 (5.2°F).
Average pressure in September
Saint Croix Falls, WI
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Saint Croix Falls, WI
- Average wind speed in September: 8mph
The windiest month (with the highest average wind speed) is April (9.7mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).
Average humidity in September
Saint Croix Falls, WI
- Average humidity in September: 79%
The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
Saint Croix Falls, WI
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is June (3.74").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days in September
Saint Croix Falls, WI
- Average rainfall days in September: 12.6 days
The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (3.2 days).
Average snowfall in September
Saint Croix Falls, WI
- Average snowfall in September: 0"
The month with the highest snowfall is December (4.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Saint Croix Falls, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Saint Croix Falls, WI
- Average daylight in September: 12h and 3min
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 3min
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 48min).
Average sunshine days in September
Saint Croix Falls, WI
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is October (16.1 days).
The month with the least sunshine days is June (10.2 days).
Average UV index in September
Saint Croix Falls, 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, February, November and December (UV index 1).
Average cloud cover in September
Saint Croix Falls, WI
- Average cloud cover in September: 37
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 34).
Average visibility in September
Saint Croix Falls, WI
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Saint Croix Falls, Wisconsin, USA
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