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

Rapid City, Rapid City Regional Airport (KRAP)

Lat: 44.05°NLon: 103.05°WElev: 3202ft.

Overcast

68°F

20°C

Humidity	81%
Wind Speed	N 17 mph
Barometer	29.94 in (1011.2 mb)
Dewpoint	62°F (17°C)
Visibility	10.00 mi
Last update	17 Aug 12:52 am MDT

More Information:

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

Extended Forecast for

Rapid City SD

Overnight
Low: 65 °F
Severe
Thunderstorms
Sunday
High: 89 °F
Mostly Sunny
then Chance
T-storms
Sunday Night
Low: 64 °F
Slight Chance
T-storms then
Partly Cloudy
Monday
High: 90 °F
Sunny then
Chance
T-storms
Monday Night
Low: 62 °F
Mostly Clear
Tuesday
High: 91 °F
Sunny
Tuesday Night
Low: 65 °F
Clear
Wednesday
High: 95 °F
Sunny
Wednesday Night
Low: 71 °F
Mostly Clear

Detailed Forecast

Overnight

A 30 percent chance of showers and thunderstorms, mainly before 2am. Some of the storms could be severe. Mostly cloudy, with a low around 65. Northwest wind around 5 mph.

Sunday

A 30 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 89. West wind around 5 mph becoming east in the afternoon.

Sunday Night

A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 64. North wind around 5 mph becoming southwest after midnight.

Monday

A 30 percent chance of showers and thunderstorms after noon. Sunny, with a high near 90. West wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 20 mph.

Monday Night

Mostly clear, with a low around 62. East wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 15 mph.

Tuesday

Sunny, with a high near 91. West wind 5 to 10 mph becoming east in the morning. Winds could gust as high as 20 mph.

Tuesday Night

Clear, with a low around 65. Southeast wind 5 to 10 mph becoming south after midnight. Winds could gust as high as 20 mph.

Wednesday

Sunny, with a high near 95. South wind 5 to 15 mph, with gusts as high as 25 mph.

Wednesday Night

Mostly clear, with a low around 71.

Thursday

Sunny, with a high near 94.