Weather in South Dakota in September 2018

  • 23°C maximum daytime temperature in September in South Dakota (Sioux Falls)23
    23°C max day temperature
  • 8 hours of sunshine per day (64% of daylight hours) in September in South Dakota8
    8 hours of sunshine per day
  • 8 days with some rainfall in September in South Dakota (Sioux Falls)8
    8 days with some rainfall
  • 9°C minimum night-time temperature in September in South Dakota (Sioux Falls)9
    9°C min night temperature
  • 12 hours of daylight per day in September in South Dakota (Sioux Falls)12
    12 hours of daylight per day
  • No heat & humidity in September in South Dakota (Sioux Falls)0
    No heat & humidity
  • 74 mm monthly rainfall in September in South Dakota (Sioux Falls)74
    74 mm of monthly rainfall
  • UV (maximum) index 6 (High) in September in South Dakota (Sioux Falls)6
    6 (High) UV index

Going to South Dakota? Find the best month to visit South Dakota based on the weather.

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Expect 23°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in South Dakota in September. Check more long-term weather averages for South Dakota in September before you book your next holiday to South Dakota in 2018. The September weather averages shown above are for Sioux Falls.

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More about South Dakota

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Metric (°C / mm)  |  Imperial (°F / inches)

Guide to South Dakota weather in September

The average maximum daytime temperature in South Dakota in September is a warm 23°C (73°F). The average night-time temperature is usually a cool 9°C (48°F). There are usually 8 hours of bright sunshine each day, which represents 64% of the 12 hours of daylight.

Expect 74mm (2.9 inches) of rainfall across the whole of September with 8 days with some rain falling. Maximum UV levels will be high (6 UV index) at midday when the skies are clear.

The weather in South Dakota in September is represented by Sioux Falls.

South Dakota sunrise & sunset times for September 2018

Browse the sunrise & sunset times for South Dakota in September 2018. Select a month to view South Dakota sunrise & sunset times for the next twelve months. The South Dakota sunrise & sunset times shown below are for Sioux Falls.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Saturday, 1st September 2018 06:51 20:02
Sunday, 2nd September 2018 06:52 20:00
Monday, 3rd September 2018 06:53 19:59
Tuesday, 4th September 2018 06:54 19:57
Wednesday, 5th September 2018 06:55 19:55
Thursday, 6th September 2018 06:56 19:53
Friday, 7th September 2018 06:57 19:51
Saturday, 8th September 2018 06:59 19:50
Sunday, 9th September 2018 07:00 19:48
Monday, 10th September 2018 07:01 19:46
Tuesday, 11th September 2018 07:02 19:44
Wednesday, 12th September 2018 07:03 19:42
Thursday, 13th September 2018 07:04 19:41
Friday, 14th September 2018 07:05 19:39
Saturday, 15th September 2018 07:06 19:37
Sunday, 16th September 2018 07:07 19:35
Monday, 17th September 2018 07:09 19:33
Tuesday, 18th September 2018 07:10 19:31
Wednesday, 19th September 2018 07:11 19:30
Thursday, 20th September 2018 07:12 19:28
Friday, 21st September 2018 07:13 19:26
Saturday, 22nd September 2018 07:14 19:24
Sunday, 23rd September 2018 07:15 19:22
Monday, 24th September 2018 07:16 19:20
Tuesday, 25th September 2018 07:18 19:19
Wednesday, 26th September 2018 07:19 19:17
Thursday, 27th September 2018 07:20 19:15
Friday, 28th September 2018 07:21 19:13
Saturday, 29th September 2018 07:22 19:11
Sunday, 30th September 2018 07:23 19:10
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