Keystone weather in June 2025

Expect daytime maximum temperatures of 77°F in Keystone, South Dakota in June based on long-term weather averages. There are 10 hours of sunshine per day on average with 12 days with some rainfall and typically 3.0 inches of rainfall in the month.

  • 77°F maximum daytime temperature in June in Keystone77
    77°F max day temperature
  • 10 hours of sunshine per day
  • 12 days with some rainfall in June in Keystone12
    12 days with some rainfall
  • 50°F minimum night-time temperature in June in Keystone50
    50°F min night temperature
  • 15 hours of daylight per day in June in Keystone15
    15 hours of daylight per day
  • No heat & humidity in June in Keystone0
    No heat & humidity
  • 3.0 inches monthly rainfall in June in Keystone3.0
    3.0 inches of monthly rainfall
  • UV (maximum) index 9 (Very High) in June in Keystone9
    9 (Very High) UV index

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The June weather guide for South Dakota (Keystone) 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)  |  Imperial (°F)

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How hot is it in Keystone in June?

Daytime temperatures usually reach 77°F in Keystone in June with no heat and humidity, falling to 50°F at night.

How sunny is it in Keystone in June?

There are normally 10 hours of bright sunshine each day in Keystone in June - that's 66% of daylight hours.

Does it rain in Keystone in June?

There are usually 12 days with some rain in Keystone in June and the average monthly rainfall is 3.0 inches.

Keystone June sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Sunday, 1st June 2025 04:14 19:30
Sunday, 15th June 2025 04:11 19:38
Monday, 30th June 2025 04:15 19:40

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