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

79°F

26°C

Humidity 30%
Wind Speed E 4 MPH
Barometer 30.11 in (1019.64 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 18 Sep 01:53 PM MDT
Extended Forecast for

21 Miles SW Buffalo WY

Flood Watch September 18, 02:05pm until September 20, 06:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch September 18, 02:05pm until September 20, 06:00pm

    NOW until 6:00pm Sun

    Flood Watch

  • This Afternoon

    High: 68 °F

    Showers
    Likely

  • Tonight

    Tonight: Showers and thunderstorms before 3am, then a slight chance of showers between 3am and 5am.  Patchy fog between 11pm and 2am. Low around 46. West wind around 6 mph becoming calm  in the evening.  Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 46 °F

    Showers and
    Patchy Fog
    then Chance
    Showers and
    Patchy Fog

  • Saturday

    Saturday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm.  Patchy fog between 8am and 9am. High near 56. Calm wind becoming south southwest 5 to 7 mph in the morning.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 56 °F

    Showers and
    Patchy Fog

  • Saturday Night

    Saturday Night: Showers and thunderstorms.  Patchy fog between 7pm and 8pm. Low around 41. North northeast wind 5 to 7 mph becoming light and variable.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 41 °F

    Showers and
    Patchy Fog

  • Sunday

    Sunday: Showers, with thunderstorms also possible after 9am.  High near 50. West wind around 6 mph.  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.  Mostly cloudy, with a low around 39. Northwest wind around 5 mph becoming calm.  Chance of precipitation is 50%.

    Low: 39 °F

    Chance
    Showers then
    Mostly Cloudy

  • Monday

    Monday: A 10 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 58. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 58 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Mostly sunny, with a high near 68. West southwest wind around 7 mph. Chance of precipitation is 60%.
Tonight
Showers and thunderstorms before 3am, then a slight chance of showers between 3am and 5am. Patchy fog between 11pm and 2am. Low around 46. West wind around 6 mph becoming calm in the evening. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. Patchy fog between 8am and 9am. High near 56. Calm wind becoming south southwest 5 to 7 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and thunderstorms. Patchy fog between 7pm and 8pm. Low around 41. North northeast wind 5 to 7 mph becoming light and variable. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers, with thunderstorms also possible after 9am. High near 50. West wind around 6 mph. 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. Mostly cloudy, with a low around 39. Northwest wind around 5 mph becoming calm. Chance of precipitation is 50%.
Monday
A 10 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 58. Calm wind becoming south 5 to 8 mph in the afternoon.
Monday Night
Mostly clear, with a low around 42.
Tuesday
Mostly sunny, with a high near 64.
Tuesday Night
A 20 percent chance of showers after midnight. Partly cloudy, with a low around 46.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 65.
Wednesday Night
Mostly clear, with a low around 46.
Thursday
Sunny, with a high near 66.
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ABOUT THIS FORECAST

 
Point Forecast:
21 Miles SW Buffalo WY
 44.09°N 106.96°W (Elev. 7999 ft)
12:33 pm MDT Sep 18, 2026
2pm MDT Sep 18, 2026-6pm MDT Sep 24, 2026
 
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Additional Resources

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