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

Tracking Weekend Storm Impacts

A storm and trailing cold front will continue to slowly move through the Gulf Coast and Southeast U.S. through this weekend with widespread rain showers and isolated thunderstorms. A fast-moving clipper storm may bring several inches of snow to the north-central Plains, Midwest, eastern Great Lakes, and Northeast regions this weekend. Read More >

Current conditions at

Mondell Field (KECS)

Lat: 43.89°NLon: 104.32°WElev: 4173ft.

Overcast

34°F

1°C

Humidity 81%
Wind Speed NW 6 mph
Barometer 29.81 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 6 Dec 4:35 pm MST
Extended Forecast for

Newcastle WY

  • Tonight

    Tonight: A 30 percent chance of snow after 11pm. Increasing clouds, with a low around 19. North wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 16 mph.

    Low: 19 °F

    Chance Snow

  • Sunday

    Sunday: A 20 percent chance of snow before 11am. Mostly cloudy, then gradually becoming sunny, with a high near 38. Light west wind becoming northwest 6 to 11 mph in the morning. Winds could gust as high as 21 mph.

    High: 38 °F

    Slight Chance
    Snow then
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 21. Light and variable wind.

    Low: 21 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 42. Wind chill values as low as 20. West wind 5 to 10 mph, with gusts as high as 18 mph.

    High: 42 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a temperature falling to near 30 by 8pm, then rising to around 36 during the remainder of the night. West wind 7 to 14 mph becoming southwest in the evening.

    Low: 30 °F⇑

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of rain after 11am, mixing with snow after 4pm. Mostly cloudy, with a high near 49. Breezy, with a west wind 17 to 22 mph increasing to 24 to 29 mph in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    High: 49 °F

    Breezy.
    Chance Rain
    then Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: A 30 percent chance of snow. Mostly cloudy, with a low around 24. Blustery, with a northwest wind 14 to 24 mph, with gusts as high as 33 mph.

    Low: 24 °F

    Chance Snow
    and Blustery

  • Wednesday

    Wednesday: A chance of snow before 11am, then a chance of rain and snow. Mostly cloudy, with a high near 39. South wind 10 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 22 mph.

    High: 39 °F

    Chance
    Rain/Snow

  • Wednesday Night

    Wednesday Night: A chance of rain and snow before 10pm, then a chance of snow. Mostly cloudy, with a low around 20.

    Low: 20 °F

    Chance
    Rain/Snow
    then Chance
    Snow

Detailed Forecast

Tonight
A 30 percent chance of snow after 11pm. Increasing clouds, with a low around 19. North wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 16 mph.
Sunday
A 20 percent chance of snow before 11am. Mostly cloudy, then gradually becoming sunny, with a high near 38. Light west wind becoming northwest 6 to 11 mph in the morning. Winds could gust as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 21. Light and variable wind.
Monday
Mostly sunny, with a high near 42. Wind chill values as low as 20. West wind 5 to 10 mph, with gusts as high as 18 mph.
Monday Night
Mostly cloudy, with a temperature falling to near 30 by 8pm, then rising to around 36 during the remainder of the night. West wind 7 to 14 mph becoming southwest in the evening.
Tuesday
A chance of rain after 11am, mixing with snow after 4pm. Mostly cloudy, with a high near 49. Breezy, with a west wind 17 to 22 mph increasing to 24 to 29 mph in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Tuesday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 24. Blustery, with a northwest wind 14 to 24 mph, with gusts as high as 33 mph.
Wednesday
A chance of snow before 11am, then a chance of rain and snow. Mostly cloudy, with a high near 39. South wind 10 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 22 mph.
Wednesday Night
A chance of rain and snow before 10pm, then a chance of snow. Mostly cloudy, with a low around 20.
Thursday
A chance of snow. Partly sunny, with a high near 29.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 13.
Friday
A slight chance of snow. Partly sunny, with a high near 25.
Friday Night
Mostly cloudy, with a low around 12.
Saturday
Mostly sunny, with a high near 36.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WY
 43.86°N 104.21°W (Elev. 4380 ft)
Last Update:
3:32 pm MST Dec 6, 2025
Forecast Valid:
4pm MST Dec 6, 2025-6pm MST Dec 13, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation