National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Buffalo (K2WX)

Lat: 45.6°NLon: 103.55°WElev: 3002ft.

74°F

23°C

Humidity 40%
Wind Speed N 16 G 22 mph
Barometer 29.42 in (994.3 mb)
Dewpoint 48°F (9°C)
Visibility NA
Last update 16 Jun 7:56 pm MDT
Extended Forecast for

Reva SD

Wind Advisory June 17, 06:00am until June 17, 08:00pm
Click here for hazard details and duration
Wind Advisory

  • Tonight

    Tonight: A chance of showers and thunderstorms before 2am, then a slight chance of showers. Partly cloudy, with a low around 55. Windy, with a west wind 9 to 19 mph increasing to 23 to 33 mph after midnight. Winds could gust as high as 46 mph. Chance of precipitation is 40%.

    Low: 55 °F

    Chance
    Showers then
    Slight Chance
    T-storms and
    Windy

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 3pm. Partly sunny, with a high near 67. Very windy, with a northwest wind 40 to 45 mph decreasing to 32 to 37 mph in the afternoon. Winds could gust as high as 55 mph. Chance of precipitation is 30%.

    High: 67 °F

    Chance
    Showers and
    Very Windy

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers, mainly before midnight. Mostly cloudy, with a low around 44. Windy, with a northwest wind 20 to 30 mph decreasing to 10 to 20 mph after midnight. Winds could gust as high as 41 mph.

    Low: 44 °F

    Chance
    Showers and
    Windy

  • Thursday

    Thursday: Mostly sunny, with a high near 70. Northwest wind 11 to 16 mph, with gusts as high as 28 mph.

    High: 70 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 45. West wind 6 to 14 mph, with gusts as high as 24 mph.

    Low: 45 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: Sunny, with a high near 75. Northwest wind 8 to 11 mph, with gusts as high as 21 mph.

    High: 75 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers and thunderstorms after noon. Partly sunny, with a high near 74. Breezy.

    High: 74 °F

    Breezy.
    Partly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 50. Breezy.

    Low: 50 °F

    Chance
    T-storms and
    Breezy then
    Showers
    Likely

Detailed Forecast

Tonight
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Partly cloudy, with a low around 55. Windy, with a west wind 9 to 19 mph increasing to 23 to 33 mph after midnight. Winds could gust as high as 46 mph. Chance of precipitation is 40%.
Wednesday
A chance of showers, with thunderstorms also possible after 3pm. Partly sunny, with a high near 67. Very windy, with a northwest wind 40 to 45 mph decreasing to 32 to 37 mph in the afternoon. Winds could gust as high as 55 mph. Chance of precipitation is 30%.
Wednesday Night
A 40 percent chance of showers, mainly before midnight. Mostly cloudy, with a low around 44. Windy, with a northwest wind 20 to 30 mph decreasing to 10 to 20 mph after midnight. Winds could gust as high as 41 mph.
Thursday
Mostly sunny, with a high near 70. Northwest wind 11 to 16 mph, with gusts as high as 28 mph.
Thursday Night
Partly cloudy, with a low around 45. West wind 6 to 14 mph, with gusts as high as 24 mph.
Juneteenth
Sunny, with a high near 75. Northwest wind 8 to 11 mph, with gusts as high as 21 mph.
Friday Night
Partly cloudy, with a low around 49.
Saturday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 74. Breezy.
Saturday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 50. Breezy.
Sunday
Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 65. Breezy.
Sunday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 47.
Monday
A chance of showers. Partly sunny, with a high near 70.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 48.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Reva SD
 45.54°N 103.06°W (Elev. 3025 ft)
Last Update:
8:32 pm MDT Jun 16, 2026
Forecast Valid:
8pm MDT Jun 16, 2026-6pm MDT Jun 23, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation