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.

Fair

87°F

31°C

Humidity	50%
Wind Speed	Calm
Barometer	29.93 in (1010.5 mb)
Dewpoint	66°F (19°C)
Visibility	10.00 mi
Heat Index	89°F (32°C)
Last update	15 Aug 5:52 pm MDT

More Information:

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

Extended Forecast for

3 Miles NNE Rapid City SD

Tonight
Low: 66 °F
Chance
T-storms then
Mostly Cloudy
Saturday
High: 85 °F
Mostly Cloudy
then Severe
Thunderstorms
Saturday Night
Low: 64 °F
Chance
T-storms
Sunday
High: 88 °F
Mostly Sunny
then Chance
T-storms
Sunday Night
Low: 63 °F
Chance
T-storms then
Partly Cloudy
Monday
High: 87 °F
Mostly Sunny
then Slight
Chance
T-storms
Monday Night
Low: 63 °F
Mostly Clear
Tuesday
High: 90 °F
Sunny
Tuesday Night
Low: 65 °F
Mostly Clear

Detailed Forecast

Tonight

A 30 percent chance of showers and thunderstorms, mainly before 9pm. Mostly cloudy, with a low around 66. 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 after noon. Some of the storms could be severe. Partly sunny, with a high near 85. Southwest wind 5 to 10 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph.

Saturday Night

A chance of showers and thunderstorms before 3am, then a slight chance of showers. Mostly cloudy, with a low around 64. Northeast wind 5 to 10 mph becoming northwest in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 30%.

Sunday

A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 88. North wind 5 to 10 mph becoming east in the morning. Winds could gust as high as 20 mph.

Sunday Night

A 30 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 63. East wind 5 to 10 mph becoming southwest after midnight. Winds could gust as high as 15 mph.

Monday

A slight chance of showers between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Sunny, with a high near 87. Southwest wind 5 to 10 mph becoming east in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 20%.

Monday Night

Mostly clear, with a low around 63. East wind 5 to 10 mph becoming southwest after midnight. Winds could gust as high as 20 mph.

Tuesday

Sunny, with a high near 90. Southwest wind 5 to 10 mph becoming northeast in the morning. Winds could gust as high as 20 mph.

Tuesday Night

Mostly clear, with a low around 65.

Wednesday

Sunny, with a high near 94.

Wednesday Night

Mostly clear, with a low around 67.

Thursday

Sunny, with a high near 93.