Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

Buffalo - Johnson County Airport (KBYG)

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

Overcast

52°F

11°C

Humidity 93%
Wind Speed NNW 8 MPH
Barometer 30.13 in (1020.32 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 20 Sep 02:20 AM MDT
Extended Forecast for

13 Miles NE Ten Sleep WY

Flood Watch September 20, 02:31am until September 20, 06:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch September 20, 02:31am until September 20, 06:00pm

    NOW until 6:00pm Sun

    Flood Watch

  • Overnight

    Low: 35 °F

    Showers and
    Patchy Fog

  • Sunday

    Sunday: Showers and thunderstorms likely before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm.  Patchy fog before noon.  Otherwise, cloudy, with a high near 49. West wind 3 to 5 mph.  Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 49 °F

    Showers
    Likely and
    Patchy Fog

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms, mainly before 7pm.  Mostly cloudy, with a low around 32. West northwest wind around 5 mph becoming calm  in the evening.

    Low: 32 °F

    Chance
    Showers then
    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 57. Calm wind becoming west southwest 5 to 7 mph in the afternoon.

    High: 57 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 34. Calm wind becoming east around 6 mph after midnight.

    Low: 34 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 64. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 64 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms after midnight.  Partly cloudy, with a low around 39. East southeast wind around 6 mph becoming light and variable  after midnight.

    Low: 39 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after noon.  Mostly sunny, with a high near 63. Chance of precipitation is 30%.

    High: 63 °F

    Chance
    Showers then
    Slight Chance
    T-storms

Detailed Forecast

Overnight
Showers likely and possibly a thunderstorm, then showers after 3am. Patchy fog. Low around 35. Light and variable wind. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers and thunderstorms likely before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Patchy fog before noon. Otherwise, cloudy, with a high near 49. West wind 3 to 5 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 32. West northwest wind around 5 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 57. Calm wind becoming west southwest 5 to 7 mph in the afternoon.
Monday Night
Mostly clear, with a low around 34. Calm wind becoming east around 6 mph after midnight.
Tuesday
Sunny, with a high near 64. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Tuesday Night
A 20 percent chance of showers and thunderstorms after midnight. Partly cloudy, with a low around 39. East southeast wind around 6 mph becoming light and variable after midnight.
Wednesday
A chance of showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 63. Chance of precipitation is 30%.
Wednesday Night
Mostly clear, with a low around 39.
Thursday
Sunny, with a high near 67.
Thursday Night
Mostly clear, with a low around 41.
Friday
Sunny, with a high near 68.
Friday Night
Mostly clear, with a low around 42.
Saturday
Sunny, with a high near 67.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
13 Miles NE Ten Sleep WY
 44.16°N 107.24°W (Elev. 8061 ft)
2:18 am MDT Sep 20, 2026
2am MDT Sep 20, 2026-6pm MDT Sep 26, 2026
 
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