Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. 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	83%
Wind Speed	S 5 mph
Barometer	29.99 in
Dewpoint	59°F (15°C)
Visibility	10.00 mi
Last update	16 Aug 5:55 am MDT

More Information:

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

Extended Forecast for

6 Miles SW Lead SD

Today
High: 80 °F
Partly Sunny
then Chance
T-storms
Tonight
Low: 53 °F
Chance
T-storms
Sunday
High: 80 °F
Sunny then
Chance
T-storms
Sunday Night
Low: 53 °F
Slight Chance
T-storms then
Partly Cloudy
Monday
High: 79 °F
Sunny then
Slight Chance
T-storms
Monday Night
Low: 53 °F
Mostly Clear
Tuesday
High: 81 °F
Sunny
Tuesday Night
Low: 55 °F
Mostly Clear
Wednesday
High: 86 °F
Sunny

Detailed Forecast

Today

A 50 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 80. Calm wind becoming east around 5 mph in the afternoon. Winds could gust as high as 15 mph.

Tonight

A 40 percent chance of showers and thunderstorms, mainly before midnight. Partly cloudy, with a low around 53. Southeast wind around 5 mph becoming calm in the evening. Winds could gust as high as 15 mph.

Sunday

A 30 percent chance of showers and thunderstorms after noon. Sunny, with a high near 80. Calm wind becoming northwest around 5 mph.

Sunday Night

A 20 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 53. East wind around 5 mph becoming calm.

Monday

A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 79. Calm wind becoming east around 5 mph in the afternoon. Winds could gust as high as 15 mph.

Monday Night

Mostly clear, with a low around 53. East wind around 5 mph becoming calm in the evening.

Tuesday

Sunny, with a high near 81. Calm wind becoming east around 5 mph in the afternoon. Winds could gust as high as 15 mph.

Tuesday Night

Mostly clear, with a low around 55. East wind around 5 mph becoming calm in the evening. Winds could gust as high as 15 mph.

Wednesday

Sunny, with a high near 86.

Wednesday Night

Mostly clear, with a low around 59.

Thursday

Sunny, with a high near 81.