September weather forecastStockholm, SD
September
Weather in September
September, the first month of the autumn in Stockholm, is also an agreeable month, with an average temperature fluctuating between 52.7°F (11.5°C) and 72.5°F (22.5°C).Temperature
The arrival of September suggests a slight decrease in the average high-temperature, moving from a warm 80.8°F (27.1°C) in August to an agreeable 72.5°F (22.5°C). An average low-temperature of 52.7°F (11.5°C) is common during the nights of September.Humidity
The average relative humidity in September in Stockholm is 67%.Rainfall
In Stockholm, in September, during 10 rainfall days, 1.61" (41mm) of precipitation is typically accumulated. Throughout the year, there are 115.2 rainfall days, and 19.88" (505mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Stockholm.Daylight
In Stockholm, the average length of the day in September is 12h and 31min.On the first day of September, sunrise is at 6:50 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 7:08 pm CDT.
Sunshine
The average sunshine in September in Stockholm, South Dakota, is 9h.UV index
In September, the average daily maximum UV index in Stockholm is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 4 during September translates into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Stockholm, SD
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (19.6°F).
- Average low temperature in September: 52.7°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (6.1°F).
Average pressure in September
Stockholm, SD
- Average pressure in September: 29.97"Hg
The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Stockholm, SD
- Average wind speed in September: 9.3mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is July (8mph).
Average humidity in September
Stockholm, SD
- Average humidity in September: 67%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (66%).
Average rainfall in September
Stockholm, SD
- Average rainfall in September: 1.61"
The wettest month (with the highest rainfall) is June (3.11").
The driest months (with the least rainfall) are January and February (0.63").
Average rainfall days in September
Stockholm, SD
- Average rainfall days in September: 10 days
The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in September
Stockholm, SD
- Average snowfall in September: 0"
The month with the highest snowfall is December (4.49").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Stockholm, SD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Stockholm, SD
- Average daylight in September: 12h and 30min
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: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in September
Stockholm, SD
- Average sunshine days in September: 18 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is June (9.6 days).
Average UV index in September
Stockholm, SD
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Stockholm, SD
- Average cloud cover in September: 28
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are July and August (Cloud cover 25).
Average visibility in September
Stockholm, SD
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
