National Weather Service United States Department of Commerce

Flash flooding possible across southern Plains through early Thursday

A wet weather system continues across the southern U.S., with abundant moisture bringing heavy rain and a risk of flash flooding to parts of the southern Plains through early Thursday. The heaviest rain will fall across Oklahoma into western Arkansas. The flash flood threat should diminish later Thursday, as the system weakens over Texas.
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Hazardous Weather Conditions

Current Conditions

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Keystone SD

7 Day Forecast

For More Weather Information:

Rapid City, SD Local Forecast Office

Overnight

Mostly Clear

Mostly
Clear

Low: 59 °F

Thursday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 81 °F

Thursday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 59 °F

Friday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 84 °F

Friday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 59 °F

Saturday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 83 °F

Saturday
Night

Partly Cloudy

Partly
Cloudy

Low: 60 °F

Sunday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 84 °F

Sunday
Night

Partly Cloudy

Partly
Cloudy

Low: 61 °F

Detailed Forecast

  • Overnight Mostly clear, with a steady temperature around 59. Northwest wind around 7 mph.
  • Thursday A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 81. Northwest wind 6 to 8 mph becoming east in the afternoon.
  • Thursday Night A 20 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 59. East wind 6 to 9 mph becoming west after midnight.
  • Friday A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 84. West wind 5 to 9 mph becoming east in the afternoon.
  • Friday Night A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 59. East wind around 7 mph becoming west after midnight.
  • Saturday A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83. West wind 5 to 8 mph becoming southeast in the afternoon.
  • Saturday Night Partly cloudy, with a low around 60.
  • Sunday A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
  • Sunday Night Partly cloudy, with a low around 61.
  • Monday A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
  • Monday Night A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
  • Tuesday A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 74.
  • Tuesday Night A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 58.
  • Wednesday A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 76.