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 moderate to locally heavy rain to portions of South Texas into Saturday. 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.

Fair

74°F

23°C

Humidity	69%
Wind Speed	N 15 mph
Barometer	30.02 in (1013.6 mb)
Dewpoint	63°F (17°C)
Visibility	10.00 mi
Last update	15 Aug 9:52 am MDT

More Information:

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

Extended Forecast for

5 Miles SW Rapid City Regional Airport SD

Today
High: 88 °F
Partly Sunny
then Slight
Chance
T-storms
Tonight
Low: 65 °F
Chance
T-storms
Saturday
High: 83 °F
Chance
T-storms
Saturday Night
Low: 63 °F
Chance
T-storms then
Mostly Cloudy
Sunday
High: 87 °F
Mostly Sunny
then Slight
Chance
T-storms
Sunday Night
Low: 62 °F
Slight Chance
T-storms then
Partly Cloudy
Monday
High: 88 °F
Sunny then
Slight Chance
T-storms
Monday Night
Low: 64 °F
Slight Chance
T-storms then
Mostly Clear
Tuesday
High: 90 °F
Sunny

Detailed Forecast

Today

A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 88. East wind around 10 mph, with gusts as high as 20 mph.

Tonight

A 30 percent chance of showers and thunderstorms, mainly before 3am. Mostly cloudy, with a low around 65. East wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 20 mph.

Saturday

A 40 percent chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 83. Southwest wind 5 to 10 mph becoming northeast in the morning. Winds could gust as high as 20 mph.

Saturday Night

A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 63. East wind 5 to 10 mph becoming west in the evening. Winds could gust as high as 20 mph.

Sunday

A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 87. Northeast wind 5 to 10 mph becoming southeast in the morning. Winds could gust as high as 20 mph.

Sunday Night

A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 62. East wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 20 mph.

Monday

A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 88. Northwest wind 5 to 10 mph becoming east in the morning. Winds could gust as high as 20 mph.

Monday Night

A slight chance of showers and thunderstorms before midnight. Mostly clear, with a low around 64. East wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 15 mph.

Tuesday

Sunny, with a high near 90.

Tuesday Night

Mostly clear, with a low around 64.

Wednesday

Sunny, with a high near 92.

Wednesday Night

Mostly clear, with a low around 65.

Thursday

Sunny, with a high near 92.