Arctic Air Spreads South and East from Rockies Friday through Next Week; Snow Squalls Possible.

Arctic air plunges across the Rockies and Great Plains Friday, crossing the Deep South and Great Lakes Saturday night, and the Eastern Seaboard on Sunday bringing dangerously cold wind chill temperatures. Brief and intense bursts of snow and gusty winds in snow squalls could lead to reduced visibility and deteriorating road conditions across the northern Plains into the Rockies through Friday. Read More >

Current conditions at

Spearfish / Clyde Ice (KSPF)

Lat: 44.48°NLon: 103.78°WElev: 3898ft.

Fair

46°F

8°C

Humidity	43%
Wind Speed	W 12 G 17 mph
Barometer	29.63 in
Dewpoint	25°F (-4°C)
Visibility	10.00 mi
Wind Chill	40°F (4°C)
Last update	16 Jan 6:15 pm MST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Lead SD

Tonight
Low: 23 °F
Increasing
Clouds
Friday
High: 25 °F⇓
Chance Snow
and Patchy
Blowing Snow
Friday Night
Low: 2 °F
Chance Snow
Saturday
High: 5 °F
Chance Snow
Saturday Night
Low: -12 °F
Chance Snow
then Mostly
Clear
Sunday
High: -1 °F
Cold
Sunday Night
Low: -14 °F
Mostly Clear
M.L.King Day
High: -1 °F
Cold
Monday Night
Low: -9 °F
Mostly Clear

Detailed Forecast

Tonight

Increasing clouds, with a low around 23. Northwest wind 8 to 13 mph, with gusts as high as 28 mph.

Friday

A 50 percent chance of snow. Patchy blowing snow between 3pm and 4pm. Mostly cloudy, with a temperature falling to around 13 by 4pm. Wind chill values as low as -3. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 47 mph. New snow accumulation of 1 to 2 inches possible.

Friday Night

A 40 percent chance of snow, mainly before 11pm. Mostly cloudy, with a low around 2. Wind chill values as low as -11. Northwest wind 10 to 15 mph, with gusts as high as 31 mph. New snow accumulation of less than a half inch possible.

Saturday

A 50 percent chance of snow. Mostly cloudy, with a high near 5. Wind chill values as low as -14. Northwest wind 10 to 14 mph, with gusts as high as 32 mph. New snow accumulation of around an inch possible.

Saturday Night

A 30 percent chance of snow before 11pm. Partly cloudy, with a low around -12. West wind 8 to 13 mph, with gusts as high as 31 mph.

Sunday

Sunny and cold, with a high near -1. Northwest wind 7 to 10 mph, with gusts as high as 23 mph.

Sunday Night

Mostly clear, with a low around -14. West wind 8 to 11 mph, with gusts as high as 30 mph.

M.L.King Day

Sunny and cold, with a high near -1. West wind 8 to 11 mph, with gusts as high as 30 mph.

Monday Night

Mostly clear, with a low around -9.

Tuesday

Mostly sunny, with a high near 25.