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

Flooding Risks from Tropical Moisture Across the Southeast and Southwest

Tropical moisture from Isaias and Rachel will impact portions of the Southeast and Southwest this weekend. Flash flooding, strong winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, strong winds and dry fuels are raising fire weather concerns across the central Great Basin and western High Plains. Across the northern Rockies, first winter storm of the season. Read More >

Current conditions at

South Big Horn County Airport (KGEY)

Lat: 44.5174°NLon: 108.0752°WElev: 3934.0ft.

Clear

63°F

17°C

Humidity 45%
Wind Speed ENE 5 MPH
Barometer 29.63 in (1003.39 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 10 Oct 07:55 PM MDT
Extended Forecast for

Greybull WY

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely after 2am. Mostly cloudy, with a low around 42. Breezy, with a light and variable wind becoming northwest 12 to 17 mph in the evening. Winds could gust as high as 28 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 42 °F

    Showers
    Likely and
    Breezy

  • Sunday

    Sunday: Showers. High near 55. Northwest wind 7 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.

    High: 55 °F

    Showers

  • Sunday Night

    Sunday Night: Showers, mainly before 1am. Low around 33. Breezy, with a west northwest wind 13 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 33 °F

    Showers and
    Breezy

  • Columbus Day

    Columbus Day: A 40 percent chance of showers, mainly before noon. Mostly cloudy, with a high near 54. Breezy, with a west northwest wind 11 to 16 mph becoming light northwest. Winds could gust as high as 23 mph.

    High: 54 °F

    Chance
    Showers and
    Breezy

  • Monday Night

    Monday Night: A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 30. Northwest wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 21 mph.

    Low: 30 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: A 20 percent chance of showers before noon. Partly sunny, with a high near 57. Calm wind becoming north northwest around 6 mph in the afternoon.

    High: 57 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 32. Northwest wind around 7 mph.

    Low: 32 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A 40 percent chance of showers, mainly before noon. Partly sunny, with a high near 58.

    High: 58 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers. Partly cloudy, with a low around 32.

    Low: 32 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
A chance of showers and thunderstorms, then showers likely after 2am. Mostly cloudy, with a low around 42. Breezy, with a light and variable wind becoming northwest 12 to 17 mph in the evening. Winds could gust as high as 28 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers. High near 55. Northwest wind 7 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.
Sunday Night
Showers, mainly before 1am. Low around 33. Breezy, with a west northwest wind 13 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Columbus Day
A 40 percent chance of showers, mainly before noon. Mostly cloudy, with a high near 54. Breezy, with a west northwest wind 11 to 16 mph becoming light northwest. Winds could gust as high as 23 mph.
Monday Night
A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 30. Northwest wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 21 mph.
Tuesday
A 20 percent chance of showers before noon. Partly sunny, with a high near 57. Calm wind becoming north northwest around 6 mph in the afternoon.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 32. Northwest wind around 7 mph.
Wednesday
A 40 percent chance of showers, mainly before noon. Partly sunny, with a high near 58.
Wednesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 32.
Thursday
Mostly sunny, with a high near 61.
Thursday Night
Mostly clear, with a low around 30.
Friday
Sunny, with a high near 62.
Friday Night
Mostly clear, with a low around 33.
Saturday
Sunny, with a high near 70.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Greybull WY
 44.49°N 108.07°W (Elev. 3894 ft)
Last Update:
7:50 pm MDT Oct 10, 2026
Forecast Valid:
8pm MDT Oct 10, 2026-6pm MDT Oct 17, 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