Pierre weather in September 2025

Expect 24°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Pierre in September. Check more long-term weather averages for Pierre in September before you book your next holiday to South Dakota in 2025/2026.

  • 24°C maximum daytime temperature in September in Pierre24
    24°C max day temperature
  • 9 hours of sunshine per day
  • 6 days with some rainfall in September in Pierre6
    6 days with some rainfall
  • 9°C minimum night-time temperature in September in Pierre9
    9°C min night temperature
  • 12 hours of daylight per day in September in Pierre12
    12 hours of daylight per day
  • No heat & humidity in September in Pierre0
    No heat & humidity
  • 32 mm monthly rainfall in September in Pierre32
    32 mm of monthly rainfall
  • UV (maximum) index 6 (High) in September in Pierre6
    6 (High) UV index

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The September weather guide for South Dakota (Pierre) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

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

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How hot is it in Pierre in September?

Daytime temperatures usually reach 24°C in Pierre in September, falling to 9°C at night.

How sunny is it in Pierre in September?

There are normally 9 hours of bright sunshine each day in Pierre in September - that's 69% of daylight hours.

Does it rain in Pierre in September?

There are usually 6 days with some rain in Pierre in September and the average monthly rainfall is 32mm.

Pierre September sunrise & sunset times

Browse the sunrise and sunset times for Pierre in September 2025. Select a month to view Pierre sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:05 19:17
Monday, 15th September 2025 06:21 18:51
Tuesday, 30th September 2025 06:38 18:23

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