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.

Clear

55°F

13°C

Humidity 76%
Wind Speed NW 5 MPH
Barometer 30.06 in (1017.95 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 19 Sep 04:35 AM MDT
Extended Forecast for

21 Miles SW Buffalo WY

Flood Watch September 19, 04:56am until September 20, 06:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch September 19, 04:56am until September 20, 06:00pm

    NOW until 6:00pm Sun

    Flood Watch

  • Today

    High: 57 °F

    Chance
    Showers and
    Patchy Fog
    then Showers
    Likely

  • Tonight

    Tonight: Showers and thunderstorms likely.  Patchy fog between 7pm and 8pm.  Otherwise, mostly cloudy, with a low around 39. West wind around 6 mph.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 39 °F

    Showers
    Likely and
    Patchy Fog

  • Sunday

    Sunday: Showers, with thunderstorms also possible after noon.  High near 50. West wind around 6 mph becoming east in the afternoon.  Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 50 °F

    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight.  Cloudy, then gradually becoming partly cloudy, with a low around 35. North northwest wind around 5 mph becoming calm  after midnight.  Chance of precipitation is 50%.

    Low: 35 °F

    Chance
    Showers then
    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 57. Light and variable wind becoming south 5 to 8 mph in the morning.

    High: 57 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 38. South southeast wind 5 to 7 mph becoming light and variable.

    Low: 38 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 64. Light and variable wind becoming south southwest 5 to 8 mph in the morning.

    High: 64 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms.  Partly cloudy, with a low around 43. Chance of precipitation is 20%.

    Low: 43 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

Detailed Forecast

Today
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3pm. Patchy fog between 8am and 9am. Otherwise, partly sunny, with a high near 57. Calm wind becoming west southwest 5 to 7 mph in the morning. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely. Patchy fog between 7pm and 8pm. Otherwise, mostly cloudy, with a low around 39. West wind around 6 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers, with thunderstorms also possible after noon. High near 50. West wind around 6 mph becoming east in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Cloudy, then gradually becoming partly cloudy, with a low around 35. North northwest wind around 5 mph becoming calm after midnight. Chance of precipitation is 50%.
Monday
Mostly sunny, with a high near 57. Light and variable wind becoming south 5 to 8 mph in the morning.
Monday Night
Mostly clear, with a low around 38. South southeast wind 5 to 7 mph becoming light and variable.
Tuesday
Sunny, with a high near 64. Light and variable wind becoming south southwest 5 to 8 mph in the morning.
Tuesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 43. Chance of precipitation is 20%.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 64. Chance of precipitation is 30%.
Wednesday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 43.
Thursday
Sunny, with a high near 67.
Thursday Night
Mostly clear, with a low around 45.
Friday
Mostly sunny, with a high near 68.
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ABOUT THIS FORECAST

 
Point Forecast:
21 Miles SW Buffalo WY
 44.09°N 106.96°W (Elev. 7999 ft)
3:31 am MDT Sep 19, 2026
4am MDT Sep 19, 2026-6pm MDT Sep 25, 2026
 
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Additional Resources

Radar & Satellite Image

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