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

27°F

-3°C

Humidity 100%
Wind Speed SE 7 mph
Barometer 29.98 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 7 Dec 6:15 am MST
Extended Forecast for

Newcastle WY

  • Today

    Today: A 30 percent chance of snow before 11am. Cloudy through mid morning, then gradual clearing, with a high near 37. Wind chill values as low as 20. Light and variable wind becoming northwest 8 to 13 mph in the morning. Winds could gust as high as 22 mph.

    High: 37 °F

    Chance Snow
    then Mostly
    Sunny

  • Tonight

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

    Low: 21 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 43. Wind chill values as low as 17. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 43 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 27. Northwest wind 5 to 9 mph becoming south in the evening. Winds could gust as high as 17 mph.

    Low: 27 °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 13 to 18 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 39 mph. Chance of precipitation is 30%.

    High: 49 °F

    Breezy.
    Chance Rain
    then Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 25. Blustery, with a northwest wind 15 to 20 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 32 mph. New snow accumulation of less than a half inch possible.

    Low: 25 °F

    Chance Snow
    and Blustery

  • Wednesday

    Wednesday: Snow likely before 1pm, then rain and snow likely. Mostly cloudy, with a high near 38. South wind 6 to 9 mph becoming north in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 60%.

    High: 38 °F

    Snow Likely
    then
    Rain/Snow
    Likely

  • Wednesday Night

    Wednesday Night: Rain and snow likely, becoming all snow after 10pm. Mostly cloudy, with a low around 20. Northwest wind 10 to 13 mph, with gusts as high as 21 mph.

    Low: 20 °F

    Rain/Snow
    Likely then
    Snow Likely

  • Thursday

    Thursday: A chance of snow. Partly sunny, with a high near 28.

    High: 28 °F

    Chance Snow

Detailed Forecast

Today
A 30 percent chance of snow before 11am. Cloudy through mid morning, then gradual clearing, with a high near 37. Wind chill values as low as 20. Light and variable wind becoming northwest 8 to 13 mph in the morning. Winds could gust as high as 22 mph.
Tonight
Partly cloudy, with a low around 21. Light and variable wind.
Monday
Mostly sunny, with a high near 43. Wind chill values as low as 17. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.
Monday Night
Mostly cloudy, with a low around 27. Northwest wind 5 to 9 mph becoming south in the evening. Winds could gust as high as 17 mph.
Tuesday
A chance of rain after 11am, mixing with snow after 4pm. Mostly cloudy, with a high near 49. Breezy, with a west wind 13 to 18 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 39 mph. Chance of precipitation is 30%.
Tuesday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 25. Blustery, with a northwest wind 15 to 20 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 32 mph. New snow accumulation of less than a half inch possible.
Wednesday
Snow likely before 1pm, then rain and snow likely. Mostly cloudy, with a high near 38. South wind 6 to 9 mph becoming north in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 60%.
Wednesday Night
Rain and snow likely, becoming all snow after 10pm. Mostly cloudy, with a low around 20. Northwest wind 10 to 13 mph, with gusts as high as 21 mph.
Thursday
A chance of snow. Partly sunny, with a high near 28.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 6.
Friday
A slight chance of snow. Partly sunny, with a high near 20.
Friday Night
A slight chance of snow. Mostly cloudy, with a low around 9.
Saturday
Mostly sunny, with a high near 35.
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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:
6:11 am MST Dec 7, 2025
Forecast Valid:
6am MST Dec 7, 2025-6pm MST Dec 13, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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