Current conditions at

Mondell Field (KECS)

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

Mostly Cloudy

79°F

26°C

Humidity 34%
Wind Speed S 13 G 22 mph
Barometer 30.02 in
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 1 Sep 1:15 pm MDT
Extended Forecast for

Newcastle WY

  • This Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms after 3pm.  Mostly sunny, with a high near 79. South wind around 7 mph, with gusts as high as 18 mph.

    High: 79 °F

    Chance
    Showers

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms before 9pm.  Mostly clear, with a low around 58. South wind 6 to 9 mph becoming east in the evening. Winds could gust as high as 18 mph.

    Low: 58 °F

    Chance
    Showers then
    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 88. Breezy, with an east wind 5 to 10 mph becoming southwest 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 88 °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 26 mph.

    Low: 60 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 88. Light and variable wind becoming southwest 6 to 11 mph in the afternoon. Winds could gust as high as 23 mph.

    High: 88 °F

    Sunny

  • Thursday Night

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

    Low: 63 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 92.

    High: 92 °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 91.

    High: 91 °F

    Sunny

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 79. South wind around 7 mph, with gusts as high as 18 mph.
Tonight
A 30 percent chance of showers and thunderstorms before 9pm. Mostly clear, with a low around 58. South wind 6 to 9 mph becoming east in the evening. Winds could gust as high as 18 mph.
Wednesday
Sunny, with a high near 88. Breezy, with an east wind 5 to 10 mph becoming southwest 15 to 20 mph in the afternoon. 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 26 mph.
Thursday
Sunny, with a high near 88. 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 east after midnight. Winds could gust as high as 21 mph.
Friday
Sunny, with a high near 92.
Friday Night
Mostly clear, with a low around 65.
Saturday
Sunny, with a high near 91.
Saturday Night
Partly cloudy, with a low around 64.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
Labor Day
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WY
 43.86°N 104.24°W (Elev. 4334 ft)
12:31 pm MDT Sep 1, 2026
1pm MDT Sep 1, 2026-6pm MDT Sep 7, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database