Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Hazardous Weather Conditions

High Wind Warning in effect from December 9, 08:00 AM MST until December 10, 02:00 AM MST

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Mostly Cloudy

41°F

5°C

Humidity	53%
Wind Speed	W 9 mph
Barometer	29.87 in
Dewpoint	25°F (-4°C)
Visibility	10.00 mi
Wind Chill	35°F (2°C)
Last update	8 Dec 8:55 pm MST

More Information:

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

Extended Forecast for

4 Miles SW North Spearfish SD

High Wind Warning December 9, 08:00am until December 10, 02:00am

Click here for hazard details and duration

High Wind Warning

Tonight
Low: 39 °F⇑
Slight Chance
Snow then
Slight Chance
Rain/Snow and
Breezy
Tuesday
High: 45 °F⇓
Rain Likely
and Breezy
then
Rain/Snow
Likely and
Windy
Tuesday Night
Low: 26 °F
Partly Cloudy
and Windy
Wednesday
High: 41 °F
Snow then
Rain/Snow
Wednesday Night
Low: 39 °F
Breezy. Rain
then
Rain/Snow
Thursday
High: 39 °F
Rain/Snow
Likely then
Snow Likely
Thursday Night
Low: 9 °F
Snow
Friday
High: 17 °F
Snow Likely
Friday Night
Low: 11 °F
Chance Snow

Detailed Forecast

Tonight

A slight chance of snow after 11pm, mixing with rain after 4am. Mostly cloudy, with a temperature rising to around 43 by 5am. Breezy, with a southwest wind 11 to 16 mph increasing to 23 to 28 mph after midnight. Winds could gust as high as 38 mph. Chance of precipitation is 20%.

Tuesday

Rain likely before 3pm, then snow likely. Mostly cloudy, with a temperature rising to near 45 by 11am, then falling to around 33 during the remainder of the day. Wind chill values as low as 19. Windy, with a west wind 24 to 32 mph, with gusts as high as 45 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

Tuesday Night

Cloudy during the early evening, then becoming partly cloudy, with a low around 26. Wind chill values as low as 15. Windy, with a northwest wind 27 to 32 mph decreasing to 15 to 20 mph after midnight. Winds could gust as high as 45 mph.

Wednesday

Snow before 3pm, then rain and snow. High near 41. Wind chill values as low as 17. Southwest wind 7 to 14 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

Wednesday Night

Rain before 2am, then snow, possibly mixed with rain. Steady temperature around 39. Breezy, with a west wind 17 to 21 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

Thursday

Rain and snow likely, becoming all snow after 8am. Cloudy, with a high near 39. West wind 10 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

Thursday Night

Snow. Low around 9. Northwest wind 10 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.

Friday

Snow likely. Cloudy, with a high near 17. Northwest wind 5 to 7 mph becoming east in the afternoon.

Friday Night

A chance of snow. Mostly cloudy, with a low around 11.

Saturday

A slight chance of snow before 11am. Mostly cloudy, with a high near 25.

Saturday Night

Mostly cloudy, with a low around 17.

Sunday

Partly sunny, with a high near 40.