Keystone weather in October

Check the Weather in Keystone, South Dakota in October before you book your next holiday. This gives the best indication of the weather in October and includes figures for temperature, sunshine and rainfall.

  • 16°C maximum daytime temperature in October in Keystone16
    16°C max day temperature
  • 7 hours of sunshine per day (65% of daylight hours) in October in Keystone7
    7 hours of sunshine per day
  • 6 days with some rainfall in October in Keystone6
    6 days with some rainfall
  • 1°C minimum night-time temperature in October in Keystone1
    1°C min night temperature
  • 11 hours of daylight per day in October in Keystone11
    11 hours of daylight per day
  • No heat & humidity in October in Keystone0
    No heat & humidity
  • 25 mm monthly rainfall in October in Keystone25
    25 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in October in Keystone3
    3 (Moderate) UV index

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

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Expires at 23:59 on Friday 11th September 2015

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