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.

Fair

36°F

2°C

Humidity	93%
Wind Speed	E 6 mph
Barometer	29.84 in
Dewpoint	34°F (1°C)
Visibility	10.00 mi
Wind Chill	31°F (-1°C)
Last update	10 Dec 1:35 pm MST

More Information:

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

Extended Forecast for

5 Miles S Lead SD

This Afternoon
High: 41 °F
Wintry Mix
Tonight
Low: 34 °F⇑
Rain
Thursday
High: 44 °F⇓
Rain Likely
then
Rain/Snow
Thursday Night
Low: 15 °F
Rain/Snow
then Snow
Likely
Friday
High: 20 °F
Snow
Friday Night
Low: 18 °F
Snow Likely
Saturday
High: 24 °F
Chance Snow
then Slight
Chance Snow
Saturday Night
Low: 13 °F
Partly Cloudy
Sunday
High: 48 °F
Sunny

Detailed Forecast

This Afternoon

A chance of snow before 3pm, then snow likely, possibly mixed with sleet between 3pm and 4pm, then rain, possibly mixed with snow after 4pm. High near 41. Light and variable wind becoming west 5 to 9 mph. Winds could gust as high as 23 mph. Chance of precipitation is 80%. Little or no snow and sleet accumulation expected.

Tonight

Rain, mainly before 2am. Temperature rising to around 38 by 11pm. West wind around 11 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.

Thursday

Rain likely before 4pm, then rain, possibly mixed with snow. Temperature rising to near 44 by noon, then falling to around 34 during the remainder of the day. West wind 10 to 14 mph, with gusts as high as 36 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

Thursday Night

Snow, possibly mixed with rain, becoming all snow after 7pm. Low around 15. Wind chill values as low as 8. Northwest wind 6 to 14 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

Friday

Snow. High near 20. North wind 3 to 5 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

Friday Night

Snow likely. Mostly cloudy, with a steady temperature around 18. Calm wind becoming west around 5 mph after midnight. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

Saturday

A 50 percent chance of snow, mainly before 11am. Partly sunny, with a high near 24. Northwest wind around 6 mph becoming calm in the afternoon. Winds could gust as high as 16 mph.

Saturday Night

Partly cloudy, with a low around 13. Southwest wind 3 to 6 mph. Winds could gust as high as 16 mph.

Sunday

Sunny, with a high near 48.

Sunday Night

Mostly clear, with a low around 29.

Monday

Mostly sunny, with a high near 51.

Monday Night

Partly cloudy, with a low around 31.

Tuesday

A slight chance of rain. Mostly sunny, with a high near 47.