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

Excessive Rainfall and Tropical Storm in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce considerable, potentially life-threatening, flooding across the lower Mississippi River Valley and central Great Lakes region through tonight. Tropical Storm Arthur will move northeastward along the Texas coast today and then move inland over southwestern Louisiana by tonight. An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana. Read More >

Hazardous Weather Conditions

Current conditions at

Buffalo (K2WX)

Lat: 45.6°NLon: 103.55°WElev: 3002ft.

Windy

61°F

16°C

Humidity 56%
Wind Speed W 35 G 47 mph
Barometer 29.76 in (1007.2 mb)
Dewpoint 45°F (7°C)
Visibility NA
Last update 17 Jun 5:56 pm MDT
Extended Forecast for

Buffalo SD

Wind Advisory June 17, 06:02pm until June 17, 08:00pm
Click here for hazard details and duration
...
  •  
    Wind Advisory June 17, 06:02pm until June 17, 08:00pm

    NOW until 8:00pm Wed

    Wind Advisory

  • Tonight

    Low: 45 °F

    Slight Chance
    T-storms and
    Breezy then
    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 73. Northwest wind 9 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    High: 73 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 46. West wind 7 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.

    Low: 46 °F

    Chance
    Showers then
    Partly Cloudy

  • Juneteenth

    Juneteenth: Sunny, with a high near 75. Northwest wind 10 to 18 mph, with gusts as high as 24 mph.

    High: 75 °F

    Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers after midnight. Partly cloudy, with a low around 49. North wind 8 to 13 mph becoming east after midnight. Winds could gust as high as 21 mph.

    Low: 49 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 74. Breezy, with a southeast wind 15 to 20 mph increasing to 23 to 28 mph in the afternoon. Winds could gust as high as 39 mph. Chance of precipitation is 50%.

    High: 74 °F

    Breezy.
    Slight Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 50. Breezy. Chance of precipitation is 80%.

    Low: 50 °F

    Showers and
    Breezy

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm. Cloudy, with a high near 67.

    High: 67 °F

    Showers
    Likely

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 45. Breezy, with a west wind 19 to 29 mph decreasing to 8 to 18 mph after midnight. Winds could gust as high as 44 mph.
Thursday
A slight chance of showers between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 73. Northwest wind 9 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Thursday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 46. West wind 7 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.
Juneteenth
Sunny, with a high near 75. Northwest wind 10 to 18 mph, with gusts as high as 24 mph.
Friday Night
A 20 percent chance of showers after midnight. Partly cloudy, with a low around 49. North wind 8 to 13 mph becoming east after midnight. Winds could gust as high as 21 mph.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 74. Breezy, with a southeast wind 15 to 20 mph increasing to 23 to 28 mph in the afternoon. Winds could gust as high as 39 mph. Chance of precipitation is 50%.
Saturday Night
Showers and possibly a thunderstorm. Low around 50. Breezy. Chance of precipitation is 80%.
Sunday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 67.
Sunday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 47.
Monday
A chance of showers, mainly after noon. Partly sunny, with a high near 69.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 47.
Tuesday
Sunny, with a high near 74.
Tuesday Night
Mostly clear, with a low around 48.
Wednesday
A slight chance of showers and thunderstorms. Sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Buffalo SD
 45.58°N 103.55°W (Elev. 2897 ft)
Last Update:
4:08 pm MDT Jun 17, 2026
Forecast Valid:
6pm MDT Jun 17, 2026-6pm MDT Jun 24, 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