Keystone weather in October 2025

Expect daytime maximum temperatures of 61°F in Keystone, South Dakota in October based on long-term weather averages. There are 7 hours of sunshine per day on average.

  • 61°F maximum daytime temperature in October in Keystone61
    61°F max day temperature
  • 7 hours of sunshine per day
  • 6 days with some rainfall in October in Keystone6
    6 days with some rainfall
  • 34°F minimum night-time temperature in October in Keystone34
    34°F 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
  • 1.0 inches monthly rainfall in October in Keystone1.0
    1.0 inches of monthly rainfall
  • UV (maximum) index 3 (Moderate) in October in Keystone3
    3 (Moderate) UV index

More about Keystone

Keystone by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for South Dakota

Auto Europe: up to 30% off car rentals

  • Save up to 30% on car rentals with Auto Europe
  • Book cars across Lisbon, Paris, Rome & beyond
  • Travel before 31st December 2025 (inclusive)
Go to Auto Europe deal >>

Expires at 23:59 on Wednesday 30th Apr 2025 · View all Auto Europe offers

The October 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)

Back to top

More about the USA

How warm is it in Keystone in October?

Daytime temperatures usually reach 61°F in Keystone in October, falling to 34°F at night.

How sunny is it in Keystone in October?

There are normally 7 hours of bright sunshine each day in Keystone in October - that's 65% of daylight hours.

Does it rain in Keystone in October?

There are usually 6 days with some rain in Keystone in October and the average monthly rainfall is 1.0 inches.

Keystone October sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 05:52 17:34
Thursday, 16th October 2025 06:10 17:08
Friday, 31st October 2025 06:29 16:45

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^