Coastal and Marine Impacts from Imelda and Humberto as Both Track Away from the Southeast U.S.

Swells and high surf from both Imelda and Humberto are expected to bring dangerous marine and rip current conditions to the east coast of Florida and Georgia today, spreading north along much of the east coast of the U.S. this week. Heavy rainfall north and west of Imelda falling across coastal Florida and Georgia into the Carolinas could cause isolated flash and urban flooding through Tuesday. Read More >

Hazardous Weather Conditions

Current conditions at

Powell Municipal Airport (KPOY)

Lat: 44.8672°NLon: 108.7934°WElev: 5092.0ft.

Clear

77°F

25°C

Humidity 22%
Wind Speed SE 8 MPH
Barometer 29.98 in (1015.24 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 29 Sep 04:35 PM MDT
Extended Forecast for

Ralston WY

  • Tonight

    Tonight: Partly cloudy, with a low around 53. Southwest wind 6 to 9 mph.

    Low: 53 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 3pm.  Mostly sunny, with a high near 78. Breezy, with a south wind 6 to 15 mph, with gusts as high as 23 mph.

    High: 78 °F

    Partly Sunny
    then Slight
    Chance
    T-storms and
    Breezy

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight.  Partly cloudy, with a low around 50. South wind 8 to 11 mph becoming west in the evening.  Chance of precipitation is 20%.

    Low: 50 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 76. Southwest wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 76 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 48. Southwest wind around 10 mph.

    Low: 48 °F

    Partly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers after noon.  Mostly sunny, with a high near 75. Southwest wind 7 to 9 mph becoming east in the morning.

    High: 75 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 47. Northwest wind around 11 mph, with gusts as high as 20 mph.  Chance of precipitation is 50%.

    Low: 47 °F

    Chance
    Showers

  • Friday

    Friday: Showers likely, with thunderstorms also possible after noon.  Mostly cloudy, with a high near 60. Chance of precipitation is 60%.

    High: 60 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A 30 percent chance of showers before midnight.  Partly cloudy, with a low around 40.

    Low: 40 °F

    Chance
    Showers then
    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 53. Southwest wind 6 to 9 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 78. Breezy, with a south wind 6 to 15 mph, with gusts as high as 23 mph.
Tuesday Night
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Partly cloudy, with a low around 50. South wind 8 to 11 mph becoming west in the evening. Chance of precipitation is 20%.
Wednesday
Mostly sunny, with a high near 76. Southwest wind 8 to 11 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 48. Southwest wind around 10 mph.
Thursday
A 20 percent chance of showers after noon. Mostly sunny, with a high near 75. Southwest wind 7 to 9 mph becoming east in the morning.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 47. Northwest wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Friday
Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 60. Chance of precipitation is 60%.
Friday Night
A 30 percent chance of showers before midnight. Partly cloudy, with a low around 40.
Saturday
A 20 percent chance of showers after noon. Mostly sunny, with a high near 62.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 38. Breezy.
Sunday
A chance of showers. Partly sunny, with a high near 53. Breezy.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 34.
Monday
A chance of showers. Mostly cloudy, with a high near 48.
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ABOUT THIS FORECAST

 
Point Forecast:
Ralston WY
 44.76°N 108.89°W (Elev. 4744 ft)
4:34 pm MDT Sep 29, 2025
5pm MDT Sep 29, 2025-6pm MDT Oct 6, 2025
 
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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