September weather forecastCentral City, SD
September
Weather in September
Central City transitions from summer into fall in September, where a gradual decrease in temperature is observed from that of August. As September unfolds, one can notice the first signs of autumn in the city’s foliage. With an average rainfall of 0.67" (17mm), the city dries up compared to August. Residents enjoy the moderate temperatures and the changing landscape. However, the mild weather conditions are occasionally interrupted by wind gusts averaging 13.5mph (21.7km/h).Temperature
September's arrival subtly correlates with a reduction in the average high-temperature, down from a warm 80.1°F (26.7°C) in August to an agreeable 71.8°F (22.1°C). Central City's temperature lowers to a mean of 51.3°F (10.7°C) during the nights in September.Humidity
August and September, with an average relative humidity of 51%, are the least humid months.Rainfall
In Central City, in September, it is raining for 6.8 days, with typically 0.67" (17mm) of accumulated precipitation. In Central City, during the entire year, the rain falls for 96.1 days and collects up to 14.02" (356mm) of precipitation.Snowfall
Months with snowfall are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 0.3 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 66.6 snowfall days, and 34.53" (877mm) of snow is accumulated.Daylight
In September, the average length of the day 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, sunrise is at 6:52 am and sunset at 6:36 pm MDT.
Sunshine
In September, the average sunshine is 10.5h.UV index
In Central City, South Dakota, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 4 during September translates into the following guidance:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Central City, SD
- Average high temperature in September: 71.8°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is December (29.7°F).
- Average low temperature in September: 51.3°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is February (15.4°F).
Average pressure in September
Central City, 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
Central City, SD
- Average wind speed in September: 8.5mph
The windiest month (with the highest average wind speed) is October (9.9mph).
The calmest month (with the lowest average wind speed) is August (7.6mph).
Average humidity in September
Central City, SD
- Average humidity in September: 51%
The months with the highest relative humidity are January and February (79%).
The months with the lowest relative humidity are August and September (51%).
Average rainfall in September
Central City, SD
- Average rainfall in September: 0.67"
The wettest month (with the highest rainfall) is May (1.93").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in September
Central City, SD
- Average rainfall days in September: 6.8 days
The month with the highest number of rainy days is June (14.2 days).
The month with the least rainy days is November (2.7 days).
Average snowfall in September
Central City, SD
- Average snowfall in September: 0.04"
The month with the highest snowfall is April (6.54").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Central City, SD
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is January (11.7 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Central City, SD
- Average daylight in September: 12h and 30min
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 30min
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 54min).
Average sunshine days in September
Central City, SD
- Average sunshine days in September: 19.6 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in September
Central City, 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, March, October, November and December (UV index 2).
Average cloud cover in September
Central City, SD
- Average cloud cover in September: 18
The months with the most cloud cover are February and April (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in September
Central City, 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).
