Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather Threat from the Central Plains to the Great Lakes

Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, and thunderstorms to the Marianas Islands into Wednesday. Tropical Storm conditions are likely over Guam. Severe thunderstorms and heavy rain are likely across the Upper Mississippi Valley and Great Lakes region with potential for large to very large hail, damaging wind, and tornadoes through Tuesday. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

A Few Clouds

70°F

21°C

Humidity	15%
Wind Speed	SW 20 G 30 mph
Barometer	29.67 in
Dewpoint	19°F (-7°C)
Visibility	10.00 mi
Last update	13 Apr 2:35 pm MDT

More Information:

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

Extended Forecast for

4 Miles SW North Spearfish SD

This Afternoon
High: 60 °F
Scattered
T-storms and
Breezy
Tonight
Low: 41 °F
Mostly Clear
and Breezy
then Mostly
Clear
Tuesday
High: 56 °F
Mostly Sunny
then Chance
Showers
Tuesday Night
Low: 40 °F
Partly Cloudy
Wednesday
High: 65 °F
Sunny
Wednesday Night
Low: 51 °F
Mostly Clear
then Mostly
Clear and
Breezy
Thursday
High: 63 °F
Mostly Sunny
and Breezy
then Chance
Showers
Thursday Night
Low: 26 °F
Blustery.
Rain/Snow
then Snow
Showers
Friday
High: 33 °F
Snow Showers
Likely and
Breezy

Detailed Forecast

This Afternoon

Scattered showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 60. Breezy, with a light southwest wind becoming west 17 to 22 mph. Winds could gust as high as 33 mph. Chance of precipitation is 30%.

Tonight

Mostly clear, with a low around 41. Breezy, with a southwest wind 15 to 20 mph decreasing to 9 to 14 mph in the evening. Winds could gust as high as 30 mph.

Tuesday

A 30 percent chance of showers after 2pm. Partly sunny, with a high near 56. West wind 5 to 9 mph becoming northwest in the afternoon. Winds could gust as high as 15 mph.

Tuesday Night

Partly cloudy, with a low around 40. South wind 5 to 10 mph, with gusts as high as 15 mph.

Wednesday

Sunny, with a high near 65. South wind 6 to 10 mph becoming west in the afternoon. Winds could gust as high as 15 mph.

Wednesday Night

Mostly clear, with a low around 51. Breezy, with a southwest wind 8 to 13 mph increasing to 17 to 22 mph after midnight. Winds could gust as high as 30 mph.

Thursday

A 30 percent chance of showers after noon. Partly sunny, with a high near 63. Breezy, with a southwest wind 15 to 22 mph becoming northwest in the afternoon. Winds could gust as high as 31 mph.

Thursday Night

Rain showers before 9pm, then rain and snow showers between 9pm and midnight, then snow showers after midnight. Mostly cloudy, with a low around 26. Blustery, with a northwest wind 20 to 23 mph, with gusts as high as 28 mph.

Friday

Snow showers likely. Mostly cloudy, with a high near 33. Breezy.

Friday Night

A chance of snow showers before midnight. Mostly cloudy, with a low around 22. Blustery.

Saturday

A chance of snow showers. Mostly sunny, with a high near 44. Breezy.

Saturday Night

Mostly clear, with a low around 27.

Sunday

Sunny, with a high near 59.