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.

Fair

61°F

16°C

Humidity	48%
Wind Speed	SW 10 G 21 mph
Barometer	29.71 in
Dewpoint	41°F (5°C)
Visibility	9.00 mi
Last update	13 Apr 11:35 am MDT

More Information:

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

Extended Forecast for

3 Miles WSW Lead SD

Today
High: 56 °F⇓
Chance
T-storms
Tonight
Low: 35 °F
Mostly Clear
Tuesday
High: 52 °F
Partly Sunny
then Chance
Showers
Tuesday Night
Low: 35 °F
Slight Chance
Showers then
Mostly Clear
Wednesday
High: 59 °F
Sunny
Wednesday Night
Low: 45 °F
Mostly Clear
Thursday
High: 60 °F
Mostly Sunny
then Showers
Likely
Thursday Night
Low: 21 °F
Rain/Snow
then Snow
Showers
Friday
High: 28 °F
Snow Showers

Detailed Forecast

Today

A 30 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a temperature falling to around 47 by 5pm. West wind 13 to 16 mph, with gusts as high as 31 mph.

Tonight

Mostly clear, with a low around 35. West wind 7 to 15 mph, with gusts as high as 28 mph.

Tuesday

A 40 percent chance of showers, mainly after 2pm. Partly sunny, with a high near 52. West wind around 7 mph becoming south in the afternoon. Winds could gust as high as 16 mph.

Tuesday Night

A 20 percent chance of showers before 9pm. Partly cloudy, with a low around 35. Southwest wind 6 to 8 mph, with gusts as high as 17 mph.

Wednesday

Sunny, with a high near 59. West wind 6 to 8 mph, with gusts as high as 17 mph.

Wednesday Night

Mostly clear, with a low around 45. Southwest wind 7 to 15 mph, with gusts as high as 28 mph.

Thursday

Showers likely after noon. Partly sunny, with a high near 60. Southwest wind 13 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 60%.

Thursday Night

Rain showers before 8pm, then rain and snow showers between 8pm and 9pm, then snow showers after 9pm. Mostly cloudy, with a low around 21. Northwest wind 14 to 17 mph, with gusts as high as 31 mph.

Friday

Snow showers. Mostly cloudy, with a high near 28.

Friday Night

A chance of snow showers before midnight. Mostly cloudy, with a low around 17.

Saturday

A chance of snow showers. Mostly sunny, with a high near 35.

Saturday Night

Mostly clear, with a low around 22.

Sunday

Sunny, with a high near 55.