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

90°F

32°C

Humidity 15%
Wind Speed Calm
Barometer 30.10 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 13 Jul 4:35 pm MDT
Extended Forecast for

15 Miles SE Newcastle WY

  • Tonight

    Tonight: Mostly clear, with a low around 65. Northeast wind 5 to 10 mph becoming southeast after midnight. Winds could gust as high as 20 mph.

    Low: 65 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 93. Southeast wind 5 to 10 mph becoming south in the afternoon. Winds could gust as high as 15 mph.

    High: 93 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 62. East wind 5 to 10 mph becoming northeast after midnight. Winds could gust as high as 20 mph.

    Low: 62 °F

    Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 79. North wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 20 mph.

    High: 79 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm. Increasing clouds, with a low around 57. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    Low: 57 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 66. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    High: 66 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 53. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

    Low: 53 °F

    Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: Partly sunny, with a high near 71. Southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 71 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 58.

    Low: 58 °F

    Slight Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 65. Northeast wind 5 to 10 mph becoming southeast after midnight. Winds could gust as high as 20 mph.
Monday
A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 93. Southeast wind 5 to 10 mph becoming south in the afternoon. Winds could gust as high as 15 mph.
Monday Night
A 50 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 62. East wind 5 to 10 mph becoming northeast after midnight. Winds could gust as high as 20 mph.
Tuesday
A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 79. North wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Showers likely and possibly a thunderstorm. Increasing clouds, with a low around 57. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 66. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 53. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Thursday
Partly sunny, with a high near 71. Southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 58.
Friday
Mostly sunny, with a high near 80.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 60.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 81.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 61.
Sunday
A slight chance of showers and thunderstorms. Sunny, with a high near 85.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
15 Miles SE Newcastle WY
 43.67°N 104.04°W (Elev. 5246 ft)
Last Update:
3:30 pm MDT Jul 13, 2025
Forecast Valid:
4pm MDT Jul 13, 2025-6pm MDT Jul 20, 2025
 
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