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

Mondell Field (KECS)

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

Partly Cloudy

72°F

22°C

Humidity 44%
Wind Speed E 13 mph
Barometer 29.94 in
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 1 Sep 8:35 pm MDT
Extended Forecast for

Newcastle WY

  • Tonight

    Tonight: Partly cloudy, with a low around 58. East wind 5 to 9 mph, with gusts as high as 17 mph.

    Low: 58 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 86. Breezy, with a light and variable wind becoming southwest 15 to 20 mph in the morning. Winds could gust as high as 30 mph.

    High: 86 °F

    Sunny then
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 60. South wind 11 to 16 mph becoming light and variable after midnight. Winds could gust as high as 28 mph.

    Low: 60 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 86. Light and variable wind becoming southwest 6 to 11 mph in the afternoon. Winds could gust as high as 23 mph.

    High: 86 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 63. Southwest wind 5 to 9 mph becoming light and variable after midnight. Winds could gust as high as 21 mph.

    Low: 63 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 90. Light and variable wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 23 mph.

    High: 90 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 58. East wind 5 to 9 mph, with gusts as high as 17 mph.
Wednesday
Sunny, with a high near 86. Breezy, with a light and variable wind becoming southwest 15 to 20 mph in the morning. Winds could gust as high as 30 mph.
Wednesday Night
Partly cloudy, with a low around 60. South wind 11 to 16 mph becoming light and variable after midnight. Winds could gust as high as 28 mph.
Thursday
Sunny, with a high near 86. Light and variable wind becoming southwest 6 to 11 mph in the afternoon. Winds could gust as high as 23 mph.
Thursday Night
Mostly clear, with a low around 63. Southwest wind 5 to 9 mph becoming light and variable after midnight. Winds could gust as high as 21 mph.
Friday
Sunny, with a high near 90. Light and variable wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 23 mph.
Friday Night
Mostly clear, with a low around 65.
Saturday
Sunny, with a high near 89.
Saturday Night
Partly cloudy, with a low around 64.
Sunday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 83.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 60.
Labor Day
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 82.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 59.
Tuesday
Mostly sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WY
 43.86°N 104.18°W (Elev. 4642 ft)
Last Update:
8:26 pm MDT Sep 1, 2026
Forecast Valid:
8pm MDT Sep 1, 2026-6pm MDT Sep 8, 2026
 
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Additional Resources

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