Sinlaku Continues to Impact the Marianas; Severe Weather from the Central US to the Northeast; Late-Season Snow in the Northwest

Sinlaku continues to bring destructive winds, widespread heavy rain/flooding, and storm surge to the Marianas. Showers and severe thunderstorms are expected from the Northeast to the Mid-Mississippi Valley and to the Central/Southern Plains through Thursday. A front will produce late-season snowfall over the Cascades and Northern Rockies and coastal rain over the Northwest Coast through Thursday. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Fair

63°F

17°C

Humidity	32%
Wind Speed	E 5 mph
Barometer	29.72 in
Dewpoint	32°F (0°C)
Visibility	10.00 mi
Last update	15 Apr 1:15 pm MDT

More Information:

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

Extended Forecast for

4 Miles WSW Lead SD

This Afternoon
High: 55 °F
Sunny
Tonight
Low: 41 °F
Partly Cloudy
Thursday
High: 56 °F
Mostly Sunny
and Breezy
then Chance
Rain/Snow
Thursday Night
Low: 18 °F
Snow Showers
Friday
High: 30 °F
Snow Showers
Likely
Friday Night
Low: 17 °F
Slight Chance
Snow Showers
then Partly
Cloudy
Saturday
High: 38 °F
Chance Snow
Showers
Saturday Night
Low: 25 °F
Mostly Clear
Sunday
High: 55 °F
Sunny

Detailed Forecast

This Afternoon

Sunny, with a steady temperature around 55. South wind around 6 mph becoming west. Winds could gust as high as 17 mph.

Tonight

Partly cloudy, with a low around 41. Southwest wind 7 to 12 mph increasing to 13 to 18 mph after midnight. Winds could gust as high as 32 mph.

Thursday

A chance of rain showers between noon and 5pm, then a chance of snow showers after 5pm. Some thunder is also possible. Increasing clouds, with a high near 56. Breezy, with a southwest wind 11 to 20 mph becoming north in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

Thursday Night

Snow showers. Low around 18. Wind chill values as low as 4. Northwest wind 13 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

Friday

Snow showers likely, mainly before noon. Mostly cloudy, with a high near 30. Northwest wind 15 to 17 mph, with gusts as high as 32 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

Friday Night

A 20 percent chance of snow showers before midnight. Partly cloudy, with a low around 17. West wind 11 to 17 mph, with gusts as high as 31 mph.

Saturday

A 50 percent chance of snow showers. Mostly sunny, with a high near 38. Northwest wind 13 to 16 mph, with gusts as high as 33 mph.

Saturday Night

Mostly clear, with a low around 25. Northwest wind 8 to 15 mph becoming southwest in the evening. Winds could gust as high as 29 mph.

Sunday

Sunny, with a high near 55.

Sunday Night

Mostly clear, with a low around 34.

Monday

Sunny, with a high near 63.