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

41°F

5°C

Humidity	57%
Wind Speed	Calm
Barometer	29.73 in
Dewpoint	27°F (-3°C)
Visibility	10.00 mi
Last update	15 Apr 5:35 am MDT

More Information:

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

Extended Forecast for

4 Miles WSW Lead SD

Today
High: 58 °F
Sunny
Tonight
Low: 42 °F
Mostly Clear
Thursday
High: 56 °F
Mostly Sunny
then
Rain/Snow
Likely
Thursday Night
Low: 17 °F
Snow Showers
Friday
High: 28 °F
Snow Showers
Likely
Friday Night
Low: 16 °F
Slight Chance
Snow Showers
then Partly
Cloudy
Saturday
High: 36 °F
Chance Snow
Showers
Saturday Night
Low: 23 °F
Mostly Clear
Sunday
High: 54 °F
Sunny

Detailed Forecast

Today

Sunny, with a high near 58. Southwest wind 6 to 8 mph, with gusts as high as 18 mph.

Tonight

Mostly clear, with a low around 42. Southwest wind 8 to 18 mph, with gusts as high as 30 mph.

Thursday

Rain showers likely between noon and 5pm, then snow showers likely after 5pm. Increasing clouds, with a high near 56. West wind 11 to 18 mph becoming northwest in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

Thursday Night

Snow showers. Low around 17. Wind chill values as low as 3. Northwest wind 13 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

Friday

Snow showers likely, mainly before noon. Mostly cloudy, with a high near 28. Northwest wind 15 to 17 mph, with gusts as high as 32 mph. Chance of precipitation is 70%. 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 16. Northwest wind 11 to 17 mph, with gusts as high as 31 mph.

Saturday

A 30 percent chance of snow showers. Mostly sunny, with a high near 36. Northwest wind 13 to 16 mph, with gusts as high as 33 mph.

Saturday Night

Mostly clear, with a low around 23. Northwest wind 8 to 14 mph becoming southwest in the evening. Winds could gust as high as 29 mph.

Sunday

Sunny, with a high near 54.

Sunday Night

Mostly clear, with a low around 34.

Monday

Sunny, with a high near 62.