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Keystone, SD
 17° 
Last Updated on Feb 18 2018, 4:53 pm MST
Current ConditionsLight Snow Fog/Mist
Relative Humidity88%
WindVariable at 4.6 MPH
(4 KT)
Pressure29.58 mb
Dewpoint14.0 F (-10.0 C)
Wind Chill10 F (-12 C)
Visibility1.25 miles

7-Day Forecast

This Afternoon
Snow and Patchy Blowing Snow
High: 14°
Snow.
Patchy blowing snow.
Steady temperature around 14.
North wind around 10 mph.
Chance of precipitation is 100%.
Total daytime snow accumulation of 1 to 2 inches possible.


Tonight
Heavy Snow and Patchy Blowing Snow
Low: -2°
Snow.
The snow could be heavy at times.
Patchy blowing snow
between 8pm and 9pm.
Low around -2.
Wind chill values
between -6 and -16.
North wind 9 to 14 mph
with gusts as high as 20 mph.
Chance of precipitation is 100%.
New snow accumulation of 4 to 8 inches possible.


Washington's Birthday
Snow
High:
Snow.
High near 4.
Wind chill values
between -10 and -18.
North wind 8 to 10 mph.
Chance of precipitation is 100%.
New snow accumulation of 2 to 4 inches possible.


Monday Night
Snow Likely then Chance Snow
Low: -12°
Snow likely, mainly before 11pm.
Cloudy with a low around -12.
Wind chill values
between -17 and -27.
North wind around 8 mph.
Chance of precipitation is 60%.


Tuesday
Slight Chance Snow then Mostly Cloudy
High:
A 20% chance of snow before 11am.
Mostly cloudy with a high near 5.
North wind around 6 mph becoming
northeast in the afternoon.


Tuesday Night
Partly Cloudy
Low: -16°
Partly cloudy with a low around -16.
South wind around 5 mph becoming
west after midnight.


Wednesday
Sunny
High: 20°
Sunny with a high near 20.


Wednesday Night
Partly Cloudy
Low: -1°
Partly cloudy with a low around -1.


Thursday
Mostly Sunny
High: 29°
Mostly sunny with a high near 29.


Thursday Night
Mostly Cloudy
Low:
Mostly cloudy with a low around 5.


Friday
Mostly Sunny
High: 31°
Mostly sunny with a high near 31.


Friday Night
Partly Cloudy
Low:
Partly cloudy with a low around 9.


Saturday
Mostly Sunny
High: 34°
Mostly sunny with a high near 34.


Saturday Night
Partly Cloudy
Low: 12°
Partly cloudy with a low around 12.


Sunday
Slight Chance Snow
High: 33°
A slight chance of snow.
Partly sunny with a high near 33.


Source: National Weather Service








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