Keystone weather in April 2025

Expect 57°F daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Keystone in April. Check more long-term weather averages for Keystone in April before you book your next holiday to South Dakota in 2025/2026.

  • 57°F maximum daytime temperature in April in Keystone57
    57°F max day temperature
  • 8 hours of sunshine per day
  • 10 days with some rainfall in April in Keystone10
    10 days with some rainfall
  • 30°F minimum night-time temperature in April in Keystone30
    30°F min night temperature
  • 13 hours of daylight per day in April in Keystone13
    13 hours of daylight per day
  • No heat & humidity in April in Keystone0
    No heat & humidity
  • 1.8 inches monthly rainfall in April in Keystone1.8
    1.8 inches of monthly rainfall
  • UV (maximum) index 6 (High) in April in Keystone6
    6 (High) UV index

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The April 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 warm is it in Keystone in April?

Daytime temperatures usually reach 57°F in Keystone in April, falling to 30°F at night.

How sunny is it in Keystone in April?

There are normally 8 hours of bright sunshine each day in Keystone in April - that's 61% of daylight hours.

Does it rain in Keystone in April?

There are usually 10 days with some rain in Keystone in April and the average monthly rainfall is 1.8 inches.

Keystone April sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st April 2025 05:34 18:21
Tuesday, 15th April 2025 05:10 18:38
Wednesday, 30th April 2025 04:46 18:56

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