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

Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Sunday could bring areas of flooding to parts of the upper Midwest, central Great Lakes, southern New England and Virginia/North Carolina tidewater region. Read More >

Hazardous Weather Conditions

Current conditions at

Buffalo - Johnson County Airport (KBYG)

Lat: 44.38122°NLon: 106.71947°WElev: 4925.0ft.

Clear

59°F

15°C

Humidity 86%
Wind Speed SSE 12 MPH
Barometer 30.16 in (1021.34 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 17 Sep 09:53 PM MDT
Extended Forecast for

18 Miles NE Ten Sleep WY

Flood Watch September 18, 12:00pm until September 20, 06:00pm
Click here for hazard details and duration
Flood Watch

  • Tonight

    Tonight: Partly cloudy, with a low around 43. North wind 3 to 5 mph.

    Low: 43 °F

    Partly Cloudy

  • Friday

    Friday: A chance of showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 63. Calm wind becoming southwest 5 to 7 mph in the afternoon. Chance of precipitation is 60%.

    High: 63 °F

    Mostly Sunny
    then Showers
    Likely

  • Friday Night

    Friday Night: Showers and thunderstorms, mainly before 3am, then showers likely and possibly a thunderstorm after 5am. Patchy fog after 11pm. Low around 41. West southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 41 °F

    Showers and
    Patchy Fog
    then Showers
    Likely and
    Patchy Fog

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 51. Calm wind becoming west southwest 5 to 7 mph in the morning. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 51 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 37. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 37 °F

    Showers

  • Sunday

    Sunday: Showers and possibly a thunderstorm. High near 46. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 100%.

    High: 46 °F

    Showers

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 34. Light northwest wind.

    Low: 34 °F

    Chance
    Showers then
    Mostly Cloudy

  • Monday

    Monday: A 10 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 54.

    High: 54 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 43. North wind 3 to 5 mph.
Friday
A chance of showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 63. Calm wind becoming southwest 5 to 7 mph in the afternoon. Chance of precipitation is 60%.
Friday Night
Showers and thunderstorms, mainly before 3am, then showers likely and possibly a thunderstorm after 5am. Patchy fog after 11pm. Low around 41. West southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
Showers and possibly a thunderstorm. High near 51. Calm wind becoming west southwest 5 to 7 mph in the morning. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and possibly a thunderstorm. Low around 37. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers and possibly a thunderstorm. High near 46. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 100%.
Sunday Night
A 40 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 34. Light northwest wind.
Monday
A 10 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 54.
Monday Night
Mostly clear, with a low around 36.
Tuesday
Mostly sunny, with a high near 59.
Tuesday Night
Partly cloudy, with a low around 38.
Wednesday
A slight chance of showers and thunderstorms. Sunny, with a high near 59.
Wednesday Night
Partly cloudy, with a low around 39.
Thursday
Sunny, with a high near 61.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
18 Miles NE Ten Sleep WY
 44.25°N 107.22°W (Elev. 8947 ft)
Last Update:
8:49 pm MDT Sep 17, 2026
Forecast Valid:
10pm MDT Sep 17, 2026-6pm MDT Sep 24, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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