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

Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

Current conditions at

Buffalo - Johnson County Airport (KBYG)

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

Clear

54°F

12°C

Humidity 52%
Wind Speed SSE 3 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 18 Jun 06:53 AM MDT
Extended Forecast for

Buffalo WY

  • Today

    Today: A slight chance of showers and thunderstorms between 3pm and 5pm. Mostly sunny, with a high near 71. Light and variable wind becoming north 6 to 11 mph in the morning. Chance of precipitation is 10%.

    High: 71 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: Partly cloudy, with a low around 49. North wind 8 to 13 mph becoming light and variable after midnight. Winds could gust as high as 22 mph.

    Low: 49 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 75. Light and variable wind becoming east southeast 5 to 10 mph in the morning.

    High: 75 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 53. East wind 5 to 10 mph becoming south southwest in the evening.

    Low: 53 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Showers and possibly a thunderstorm after noon. High near 80. South wind 7 to 11 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%.

    High: 80 °F

    Partly Sunny
    then Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms after midnight. Low around 52. West northwest wind 6 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

    Low: 52 °F

    Showers then
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, then showers and possibly a thunderstorm after noon. High near 71. Breezy, with a north wind 8 to 13 mph increasing to 15 to 20 mph in the morning. Winds could gust as high as 29 mph. Chance of precipitation is 80%.

    High: 71 °F

    Breezy.
    Chance
    Showers then
    Showers

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 49. Chance of precipitation is 60%.

    Low: 49 °F

    Showers
    Likely

  • Monday

    Monday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after noon. High near 66. Chance of precipitation is 80%.

    High: 66 °F

    Chance
    Showers then
    Showers

Detailed Forecast

Today
A slight chance of showers and thunderstorms between 3pm and 5pm. Mostly sunny, with a high near 71. Light and variable wind becoming north 6 to 11 mph in the morning. Chance of precipitation is 10%.
Tonight
Partly cloudy, with a low around 49. North wind 8 to 13 mph becoming light and variable after midnight. Winds could gust as high as 22 mph.
Juneteenth
Mostly sunny, with a high near 75. Light and variable wind becoming east southeast 5 to 10 mph in the morning.
Friday Night
Increasing clouds, with a low around 53. East wind 5 to 10 mph becoming south southwest in the evening.
Saturday
Showers and possibly a thunderstorm after noon. High near 80. South wind 7 to 11 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%.
Saturday Night
Showers and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms after midnight. Low around 52. West northwest wind 6 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Sunday
A chance of showers, then showers and possibly a thunderstorm after noon. High near 71. Breezy, with a north wind 8 to 13 mph increasing to 15 to 20 mph in the morning. Winds could gust as high as 29 mph. Chance of precipitation is 80%.
Sunday Night
Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 49. Chance of precipitation is 60%.
Monday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after noon. High near 66. Chance of precipitation is 80%.
Monday Night
A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 47.
Tuesday
A chance of showers and thunderstorms. Sunny, with a high near 74.
Tuesday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 52.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Buffalo WY
 44.34°N 106.72°W (Elev. 4797 ft)
Last Update:
6:01 am MDT Jun 18, 2026
Forecast Valid:
7am MDT Jun 18, 2026-6pm MDT Jun 24, 2026
 
Forecast Discussion
 
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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