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
Saint Onge's transition into September involves a shift in temperature, receding from a moderately hot 81.9°F (27.7°C) in August to an agreeable 72.5°F (22.5°C). The mean low-temperature during September nights in Saint Onge, South Dakota, is a cool 52°F (11.1°C).Humidity
In Saint Onge, the average relative humidity in September is 50%.Rainfall
In Saint Onge, during September, the rain falls for 7.6 days and regularly aggregates up to 0.79" (20mm) of precipitation. Throughout the year, in Saint Onge, there are 99.6 rainfall days, and 15.63" (397mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows in Saint Onge. Throughout September, in the average 0.1 snowfall days, it receives 0.16" (4mm) of snow. In Saint Onge, South Dakota, during the entire year, snow falls for 56.8 days and aggregates up to 36.3" (922mm) of snow.Daylight
The average length of the day in September in Saint Onge is 12h and 30min.On the first day of the month, sunrise is at 6:18 am and sunset at 7:30 pm. On the last day of September, in Saint Onge, sunrise is at 6:52 am and sunset at 6:36 pm MDT.
Sunshine
In September, the average sunshine in Saint Onge is 10.6h.UV index
In Saint Onge, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: In September, the UV index of 4 transforms into the following advice:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Frequently asked questions
What is the usual temperature for Saint Onge in September?
What is the average humidity in September in Saint Onge?
How many days does it rain in September in Saint Onge?
When does it start snowing in Saint Onge?
What is the average length of the day in September in Saint Onge?
When are sunrise and sunset in September in Saint Onge?
How long on average sun shines in September in Saint Onge?
What is the UV index reading in September in Saint Onge?
Average temperature in September
Saint Onge, SD
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is December (30.9°F).
- Average low temperature in September: 52°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is February (16.2°F).
Average pressure in September
Saint Onge, SD
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Saint Onge, SD
- Average wind speed in September: 8.8mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (8mph).
Average humidity in September
Saint Onge, SD
- Average humidity in September: 50%
The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (49%).
Average rainfall in September
Saint Onge, SD
- Average rainfall in September: 0.79"
The wettest month (with the highest rainfall) is May (2.32").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in September
Saint Onge, SD
- Average rainfall days in September: 7.6 days
The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is February (2.9 days).
Average snowfall in September
Saint Onge, SD
- Average snowfall in September: 0.16"
The month with the highest snowfall is April (7.36").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Saint Onge, SD
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (11.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Saint Onge, SD
- Average daylight in September: 12h and 3min
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: 10h and 4min
The month with the most sunshine is August (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 42min).
Average sunshine days in September
Saint Onge, SD
- Average sunshine days in September: 20.1 days
The month with the most sunshine days is November (20.3 days).
The month with the least sunshine days is May (12.7 days).
Average UV index in September
Saint Onge, SD
- 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, April, November and December (UV index 2).
Average cloud cover in September
Saint Onge, SD
- Average cloud cover in September: 18
The month with the most cloud cover is February (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in September
Saint Onge, SD
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Saint Onge, South Dakota, USA
Weather forecast for your location
2. Allow the app to use your location
