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

Early Heat Wave in the West; Fire Concerns in the Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Elevated to critical fire weather conditions are expected today across the High Plains and southern Plains. Lake effect snow downwind of the Great Lakes will taper off today. Read More >

Hazardous Weather Conditions

Current conditions at

South Big Horn County Airport (KGEY)

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

Partly Cloudy

39°F

4°C

Humidity 56%
Wind Speed N 0 MPH
Barometer 29.89 in (1012.19 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 17 Mar 08:53 AM MDT
Extended Forecast for

Greybull WY

  • Today

    Today: Partly sunny, with a high near 68. Light and variable wind becoming west northwest around 5 mph in the afternoon.

    High: 68 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 36. West northwest wind around 5 mph becoming calm in the evening.

    Low: 36 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 75. Light and variable wind becoming west 5 to 9 mph in the morning.

    High: 75 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 37. West northwest wind 5 to 10 mph becoming light and variable in the evening.

    Low: 37 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 77. Calm wind becoming west southwest 5 to 7 mph in the afternoon.

    High: 77 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 40. West wind 5 to 8 mph becoming light and variable in the evening.

    Low: 40 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 79. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 79 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 78.

    High: 78 °F

    Partly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 68. Light and variable wind becoming west northwest around 5 mph in the afternoon.
Tonight
Partly cloudy, with a low around 36. West northwest wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 75. Light and variable wind becoming west 5 to 9 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 37. West northwest wind 5 to 10 mph becoming light and variable in the evening.
Thursday
Mostly sunny, with a high near 77. Calm wind becoming west southwest 5 to 7 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 40. West wind 5 to 8 mph becoming light and variable in the evening.
Friday
Mostly sunny, with a high near 79. Calm wind becoming south 5 to 8 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 43.
Saturday
Partly sunny, with a high near 78.
Saturday Night
Partly cloudy, with a low around 36. Breezy.
Sunday
Mostly sunny, with a high near 61.
Sunday Night
Mostly cloudy, with a low around 33.
Monday
Partly sunny, with a high near 66.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Greybull WY
 44.49°N 108.04°W (Elev. 3973 ft)
Last Update:
7:47 am MDT Mar 17, 2026
Forecast Valid:
9am MDT Mar 17, 2026-6pm MDT Mar 23, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation