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

Heavy Rainfall and Flooding Threats in the Midwest and Ohio Valley; Heat Continues in the Plains and Southeast

An active pattern will continue to bring heavy to excessive rainfall and flash flooding threats to the Midwest and Ohio Valley over the next couple of days. Dangerous heat continues across the central/southern Plains and Southeast U.S. into next week. There is potential for record-tying/breaking temperatures with many areas forecast to see their hottest temperatures so far this year. Read More >

Current conditions at

Buffalo - Johnson County Airport (KBYG)

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

Rain

63°F

17°C

Humidity 82%
Wind Speed S 12 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 57°F (14°C)
Visibility 8.00 mi
Last update 13 Aug 06:35 PM MDT
Extended Forecast for

15 Miles S Story WY

  • Tonight

    Tonight: Showers and thunderstorms before 3am, then a chance of showers. Patchy smoke between 9pm and 10pm. Low around 38. Southeast wind 10 to 14 mph becoming west southwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 38 °F

    Showers

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms, mainly after 11am. Cloudy, then gradually becoming mostly sunny, with a high near 49. Breezy, with a west wind 11 to 15 mph, with gusts as high as 22 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 49 °F

    Chance
    Showers and
    Breezy then
    Chance
    T-storms

  • Friday Night

    Friday Night: Showers and thunderstorms likely before 5am, then a chance of showers. Mostly cloudy, with a low around 37. Southwest wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 37 °F

    Showers
    Likely

  • Saturday

    Saturday: A chance of showers before 9am, then a chance of showers and thunderstorms between 9am and noon, then showers and possibly a thunderstorm after noon. High near 49. West northwest wind 11 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 49 °F

    Chance
    Showers then
    Showers

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before midnight. Partly cloudy, with a low around 35. West wind 9 to 11 mph. Chance of precipitation is 60%.

    Low: 35 °F

    Showers
    Likely then
    Partly Cloudy

  • Sunday

    Sunday: A slight chance of showers, then a chance of showers and thunderstorms after noon. Sunny, with a high near 52. Breezy, with a west northwest wind 11 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.

    High: 52 °F

    Slight Chance
    Showers then
    Chance
    T-storms and
    Breezy

  • Sunday Night

    Sunday Night: A 10 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 37. West wind around 11 mph.

    Low: 37 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 54. Breezy.

    High: 54 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms and
    Breezy

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 38. Chance of precipitation is 40%.

    Low: 38 °F

    Chance
    Showers

Detailed Forecast

Tonight
Showers and thunderstorms before 3am, then a chance of showers. Patchy smoke between 9pm and 10pm. Low around 38. Southeast wind 10 to 14 mph becoming west southwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Friday
A 50 percent chance of showers and thunderstorms, mainly after 11am. Cloudy, then gradually becoming mostly sunny, with a high near 49. Breezy, with a west wind 11 to 15 mph, with gusts as high as 22 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and thunderstorms likely before 5am, then a chance of showers. Mostly cloudy, with a low around 37. Southwest wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
A chance of showers before 9am, then a chance of showers and thunderstorms between 9am and noon, then showers and possibly a thunderstorm after noon. High near 49. West northwest wind 11 to 13 mph, with gusts as high as 20 mph. 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 likely and possibly a thunderstorm before midnight. Partly cloudy, with a low around 35. West wind 9 to 11 mph. Chance of precipitation is 60%.
Sunday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Sunny, with a high near 52. Breezy, with a west northwest wind 11 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.
Sunday Night
A 10 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 37. West wind around 11 mph.
Monday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 54. Breezy.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 38. Chance of precipitation is 40%.
Tuesday
A chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 51. Breezy. Chance of precipitation is 60%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 36. Breezy.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 51. Breezy.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 36. Breezy.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 53. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
15 Miles S Story WY
 44.38°N 107.15°W (Elev. 11001 ft)
Last Update:
5:47 pm MDT Aug 13, 2026
Forecast Valid:
6pm MDT Aug 13, 2026-6pm MDT Aug 20, 2026
 
Forecast Discussion
 
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Additional Resources

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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