Tracking Atmospheric River in the Northwest U.S. and Clipper with Winter Weather in the Northeast U.S.

A prolonged atmospheric river will continue to bring gusty winds, heavy rainfall which may lead to urban and river flooding with possible landslides, and heavy inter-mountain snow over the Pacific Northwest into the northern Rockies through Thursday. A clipper will cross the Great Lakes and Northeast U.S. into Thursday with areas of moderate to heavy snow and mixed wintry precipitation. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Partly Cloudy

41°F

5°C

Humidity	93%
Wind Speed	SE 6 mph
Barometer	29.69 in
Dewpoint	39°F (4°C)
Visibility	10.00 mi
Wind Chill	37°F (3°C)
Last update	11 Dec 2:55 am MST

More Information:

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

Extended Forecast for

Spearfish SD

Overnight
Low: 48 °F
Slight Chance
Rain
Thursday
High: 54 °F⇓
Chance Rain
and Breezy
Thursday Night
Low: 20 °F
Chance
Rain/Snow and
Breezy then
Chance Snow
Friday
High: 25 °F⇓
Snow
Friday Night
Low: 10 °F
Snow
Saturday
High: 23 °F
Snow Likely
then Partly
Sunny
Saturday Night
Low: 11 °F
Partly Cloudy
Sunday
High: 54 °F
Sunny
Sunday Night
Low: 36 °F
Mostly Clear

Detailed Forecast

Overnight

A 20 percent chance of rain. Mostly cloudy, with a steady temperature around 48. West wind around 15 mph, with gusts as high as 26 mph.

Thursday

A 50 percent chance of rain after 11am. Mostly cloudy, with a temperature rising to near 54 by 11am, then falling to around 43 during the remainder of the day. Breezy, with a west wind 17 to 24 mph, with gusts as high as 37 mph.

Thursday Night

A chance of rain before 9pm, then a chance of rain and snow between 9pm and 10pm, then a chance of snow after 10pm. Mostly cloudy, with a low around 20. Wind chill values as low as 13. Breezy, with a northwest wind 15 to 20 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

Friday

Snow. Temperature falling to around 18 by 5pm. Wind chill values as low as 10. North wind 6 to 8 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

Friday Night

Snow. Low around 10. East wind around 6 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

Saturday

Snow likely before 11am. Mostly cloudy, with a high near 23. North wind around 6 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

Saturday Night

Partly cloudy, with a low around 11. Southeast wind 3 to 6 mph.

Sunday

Sunny, with a high near 54. Southwest wind 7 to 11 mph, with gusts as high as 20 mph.

Sunday Night

Mostly clear, with a low around 36.

Monday

Mostly sunny, with a high near 54.

Monday Night

Partly cloudy, with a low around 39.

Tuesday

Partly sunny, with a high near 55.