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.

Fair

10°C

50°F

Humidity 35%
Wind Speed SE 15 km/h
Barometer 29.91 in
Dewpoint -5°C (23°F)
Visibility 16 km
Wind Chill8°C (46°F)
Last update 13 Nov 9:35 pm MST
Extended Forecast for

Newcastle WY

  • Tonight

    Tonight: Mostly clear, with a low around 4. East wind 8 to 11 km/h.

    Low: 4 °C

    Mostly Clear

  • Friday

    Friday: Increasing clouds, with a high near 21. East wind 8 to 13 km/h becoming southwest 18 to 23 km/h in the morning. Winds could gust as high as 35 km/h.

    High: 21 °C

    Increasing
    Clouds

  • Friday Night

    Friday Night: Partly cloudy, with a low around 4. Southwest wind 11 to 16 km/h becoming north after midnight. Winds could gust as high as 26 km/h.

    Low: 4 °C

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 13. West wind 8 to 10 km/h.

    High: 13 °C

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 2. Calm wind.

    Low: 2 °C

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 13. Light and variable wind becoming southeast 9 to 14 km/h in the morning. Winds could gust as high as 26 km/h.

    High: 13 °C

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 50 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 3. Southeast wind 10 to 14 km/h, with gusts as high as 27 km/h.

    Low: 3 °C

    Chance Rain

  • Monday

    Monday: A chance of rain, mainly before 11am. Mostly cloudy, with a high near 9. Southeast wind 11 to 14 km/h, with gusts as high as 26 km/h.

    High: 9 °C

    Chance Rain

  • Monday Night

    Monday Night: A chance of rain. Mostly cloudy, with a low around 0.

    Low: 0 °C

    Chance Rain

Detailed Forecast

Tonight
Mostly clear, with a low around 4. East wind 8 to 11 km/h.
Friday
Increasing clouds, with a high near 21. East wind 8 to 13 km/h becoming southwest 18 to 23 km/h in the morning. Winds could gust as high as 35 km/h.
Friday Night
Partly cloudy, with a low around 4. Southwest wind 11 to 16 km/h becoming north after midnight. Winds could gust as high as 26 km/h.
Saturday
Sunny, with a high near 13. West wind 8 to 10 km/h.
Saturday Night
Mostly clear, with a low around 2. Calm wind.
Sunday
Mostly sunny, with a high near 13. Light and variable wind becoming southeast 9 to 14 km/h in the morning. Winds could gust as high as 26 km/h.
Sunday Night
A 50 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 3. Southeast wind 10 to 14 km/h, with gusts as high as 27 km/h.
Monday
A chance of rain, mainly before 11am. Mostly cloudy, with a high near 9. Southeast wind 11 to 14 km/h, with gusts as high as 26 km/h.
Monday Night
A chance of rain. Mostly cloudy, with a low around 0.
Tuesday
A slight chance of rain. Partly sunny, with a high near 9.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around -1.
Wednesday
A slight chance of rain and snow. Partly sunny, with a high near 7.
Wednesday Night
A slight chance of rain and snow. Mostly cloudy, with a low around -3.
Thursday
A slight chance of rain and snow. Mostly sunny, with a high near 6.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WY
 43.86°N 104.21°W (Elev. 4380 m)
Last Update:
9:41 pm MST Nov 13, 2025
Forecast Valid:
9pm MST Nov 13, 2025-6pm MST Nov 20, 2025
 
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Additional Resources

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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