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Heavy Snow in the Sierra Nevada; Heavy Rainfall in Texas Sunday

Heavy snow is expected in the Sierra Nevada mountain ranges into Saturday causing hazardous travel conditions. Winter Storm Warnings have been issued. Thunderstorms and moderate to heavy rainfall are expected across portions of eastern Texas into Louisiana on Sunday. Read More >

Current conditions at

Mondell Field (KECS)

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

Overcast

37°F

3°C

Humidity 93%
Wind Speed SE 5 mph
Barometer 30.02 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 15 Nov 5:55 am MST
Extended Forecast for

Newcastle WY

  • Today

    Today: Patchy fog before 9am. Otherwise, sunny, with a high near 54. Light and variable wind becoming northwest around 5 mph in the morning.

    High: 54 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 35. Light east wind.

    Low: 35 °F

    Mostly Clear

  • Monday

    Monday: Increasing clouds, with a high near 57. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 57 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 40. Southeast wind 5 to 7 mph becoming calm after midnight.

    Low: 40 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 58. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 58 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 37. Southeast wind around 6 mph becoming west after midnight.

    Low: 37 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 45. Breezy.

    High: 45 °F

    Mostly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny

Detailed Forecast

Today
Patchy fog before 9am. Otherwise, sunny, with a high near 54. Light and variable wind becoming northwest around 5 mph in the morning.
Tonight
Mostly clear, with a low around 35. Light east wind.
Monday
Increasing clouds, with a high near 57. Calm wind becoming southeast around 6 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 40. Southeast wind 5 to 7 mph becoming calm after midnight.
Tuesday
Mostly sunny, with a high near 58. Calm wind becoming southwest around 6 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 37. Southeast wind around 6 mph becoming west after midnight.
Wednesday
Mostly sunny, with a high near 45. Breezy.
Wednesday Night
Partly cloudy, with a low around 28.
Thursday
Mostly sunny, with a high near 50.
Thursday Night
Mostly cloudy, with a low around 34.
Friday
A slight chance of rain. Partly sunny, with a high near 48.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 29.
Saturday
A chance of snow. Mostly sunny, with a high near 40.
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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:
3:41 am MST Nov 15, 2026
Forecast Valid:
6am MST Nov 15, 2026-6pm MST Nov 21, 2026
 
Forecast Discussion
 
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Additional Resources

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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