Keystone weather in February 2026

Q: How cold is it in Keystone in February?

Daytime temperatures usually reach 3°C in Keystone in February, falling to -10°C at night.

Q: How sunny is it in Keystone in February?

There are normally 6 hours of bright sunshine each day in Keystone in February - that's 60% of daylight hours.

Q: Does it rain in Keystone in February?

There are usually 8 days with some rain in Keystone in February and the average monthly rainfall is 13mm. Rain may fall as snow in this month.

Expect daytime maximum temperatures of 37°F in Keystone, South Dakota in February based on long-term weather averages. There are 6 hours of sunshine per day on average, which might fall as snow.

37
37°F max day temperature
6
6 hours of sunshine per day
8
8 days with some rainfall
14
14°F min night temperature
11
11 hours of daylight per day
0
No heat & humidity
0.5
0.5 inches of monthly rainfall
2
2 (Low) UV index

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The February 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)

More about the USA

How cold is it in Keystone in February?

Daytime temperatures usually reach 37°F in Keystone in February, falling to 14°F at night.

How sunny is it in Keystone in February?

There are normally 6 hours of bright sunshine each day in Keystone in February - that's 60% of daylight hours.

Does it rain in Keystone in February?

There are usually 8 days with some rain in Keystone in February and the average monthly rainfall is 0.5 inches. Rain may fall as snow in this month.

Keystone February sunrise & sunset times

Browse the sunrise and sunset times for Keystone in February 2026. Select a month to view Keystone sunrise and sunset times for the next 12 months.

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

Date	Sunrise times	Sunset times
Sunday, 1st February 2026	07:11	17:04
Saturday, 14th February 2026	06:54	17:22
Saturday, 28th February 2026	06:32	17:41

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South Dakota - quick facts
Flight time^✝	12.5 hours
Time difference	UK -6 to -7 hours
Language(s)	English
Currency	US Dollar
Electricity	A + B plug (120V)
Driving side	Right
Visa^✝	Yes
Why visit?	Nature
Tourist info	South Dakota Department of Tourism