September weather forecastRenner, SD
September
Weather in September
September, the first month of the autumn in Renner, is still a warm month, with an average temperature fluctuating between 74.3°F (23.5°C) and 53.2°F (11.8°C).Temperature
The arrival of September correlates with a minor temperature reduction, down from August's 81.1°F (27.3°C) to a still moderately hot 74.3°F (23.5°C). September brings an average low-temperature of 53.2°F (11.8°C) to Renner.Humidity
The average relative humidity in September is 70%.Rainfall
In September, in Renner, South Dakota, the rain falls for 10.5 days. Throughout September, 1.89" (48mm) of precipitation is accumulated. Throughout the year, in Renner, there are 117.1 rainfall days, and 20.71" (526mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day in Renner, South Dakota, is 12h and 29min.On the first day of the month, sunrise is at 6:51 am and sunset at 8:01 pm. On the last day of September, sunrise is at 7:24 am and sunset at 7:09 pm CDT.
Sunshine
In September, the average sunshine in Renner, South Dakota, is 8.8h.UV index
In Renner, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Prioritize safety - Recommendations to avert sunburn are shared. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Renner, SD
- Average high temperature in September: 74.3°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (23.4°F).
- Average low temperature in September: 53.2°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (9.7°F).
Average pressure in September
Renner, SD
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Renner, SD
- Average wind speed in September: 9.4mph
The windiest month (with the highest average wind speed) is April (11.3mph).
The calmest month (with the lowest average wind speed) is July (8mph).
Average humidity in September
Renner, SD
- Average humidity in September: 70%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (66%).
Average rainfall in September
Renner, SD
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is June (3.27").
The driest months (with the least rainfall) are January, February and November (0.67").
Average rainfall days in September
Renner, SD
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is February (3 days).
Average snowfall in September
Renner, SD
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.25").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Renner, SD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Renner, SD
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 8h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Renner, SD
- Average sunshine days in September: 17.7 days
The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is June (10 days).
Average UV index in September
Renner, SD
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Renner, SD
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in September
Renner, 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).
