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

64°F

18°C

Humidity	30%
Wind Speed	E 9 mph
Barometer	29.67 in
Dewpoint	32°F (0°C)
Visibility	10.00 mi
Last update	15 Apr 5:55 pm MDT

More Information:

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

Extended Forecast for

Spearfish SD

Tonight
Low: 48 °F
Partly Cloudy
Thursday
High: 63 °F
Breezy.
Mostly Sunny
then Chance
Showers
Thursday Night
Low: 26 °F
Rain/Snow
then Snow
Showers
Friday
High: 40 °F
Chance Snow
Showers and
Breezy
Friday Night
Low: 23 °F
Slight Chance
Snow Showers
and Blustery
then Mostly
Clear
Saturday
High: 48 °F
Breezy.
Chance Snow
Showers then
Chance
Rain/Snow
Saturday Night
Low: 30 °F
Mostly Clear
Sunday
High: 63 °F
Sunny
Sunday Night
Low: 40 °F
Mostly Clear

Detailed Forecast

Tonight

Partly cloudy, with a low around 48. East wind 6 to 11 mph becoming southwest 13 to 18 mph after midnight. Winds could gust as high as 29 mph.

Thursday

A chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Increasing clouds, with a high near 63. Breezy, with a southwest wind 18 to 21 mph becoming north in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 50%.

Thursday Night

Rain showers before 8pm, then snow showers. Low around 26. Wind chill values as low as 17. Northwest wind 14 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.

Friday

A 50 percent chance of snow showers. Mostly cloudy, with a high near 40. Wind chill values as low as 14. Breezy, with a northwest wind 14 to 23 mph, with gusts as high as 34 mph. New snow accumulation of less than a half inch possible.

Friday Night

A 20 percent chance of snow showers before midnight. Mostly clear, with a low around 23. Blustery, with a west wind 16 to 21 mph decreasing to 9 to 14 mph in the evening. Winds could gust as high as 32 mph.

Saturday

A chance of snow showers before 4pm, then a chance of rain and snow showers. Mostly sunny, with a high near 48. Breezy, with a northwest wind 11 to 16 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 34 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

Saturday Night

Mostly clear, with a low around 30. Northwest wind 6 to 16 mph becoming southwest after midnight. Winds could gust as high as 28 mph.

Sunday

Sunny, with a high near 63. Light and variable wind becoming east 5 to 10 mph in the morning. Winds could gust as high as 21 mph.

Sunday Night

Mostly clear, with a low around 40.

Monday

Sunny, with a high near 73.

Monday Night

Mostly clear, with a low around 46.

Tuesday

Sunny, with a high near 75.