Areas of Severe Thunderstorms and Excessive Rainfall Tuesday

Severe thunderstorms will be possible over parts of the northern Plains Tuesday which could bring large hail, damaging winds, and possible tornadoes. Thunderstorms with heavy to excessive rainfall may produce flooding over parts of the southern High Plains and North Dakota on Tuesday. Read More >

Current conditions at

Mondell Field (KECS)

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

Fair

57°F

14°C

Humidity 55%
Wind Speed SE 13 mph
Barometer 30.17 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 1 Jun 11:55 pm MDT
Extended Forecast for

Newcastle WY

  • Overnight

    Overnight: A 20 percent chance of showers before 3am.  Mostly cloudy, with a low around 53. Southeast wind 10 to 13 mph, with gusts as high as 25 mph.

    Low: 53 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after 3pm.  Partly sunny, with a high near 80. South wind 7 to 9 mph, with gusts as high as 21 mph.

    High: 80 °F

    Partly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 51. Southeast wind 5 to 7 mph becoming calm  after midnight. Winds could gust as high as 21 mph.

    Low: 51 °F

    Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 3pm.  Mostly sunny, with a high near 77. Calm wind becoming west around 6 mph in the afternoon.  Chance of precipitation is 40%.

    High: 77 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 52. East wind 5 to 8 mph becoming calm  after midnight.

    Low: 52 °F

    Mostly Clear

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 80. Calm wind becoming southeast 5 to 9 mph in the morning. Winds could gust as high as 20 mph.

    High: 80 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 54.

    Low: 54 °F

    Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: A slight chance of showers and thunderstorms after noon.  Sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Clear, with a low around 54.

    Low: 54 °F

    Clear

Detailed Forecast

Overnight
A 20 percent chance of showers before 3am. Mostly cloudy, with a low around 53. Southeast wind 10 to 13 mph, with gusts as high as 25 mph.
Tuesday
A 40 percent chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 80. South wind 7 to 9 mph, with gusts as high as 21 mph.
Tuesday Night
A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 51. Southeast wind 5 to 7 mph becoming calm after midnight. Winds could gust as high as 21 mph.
Wednesday
A chance of showers, with thunderstorms also possible after 3pm. Mostly sunny, with a high near 77. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 40%.
Wednesday Night
Mostly clear, with a low around 52. East wind 5 to 8 mph becoming calm after midnight.
Thursday
A 50 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 80. Calm wind becoming southeast 5 to 9 mph in the morning. Winds could gust as high as 20 mph.
Thursday Night
A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 54.
Friday
A slight chance of showers and thunderstorms after noon. Sunny, with a high near 80.
Friday Night
Clear, with a low around 54.
Saturday
Sunny, with a high near 87.
Saturday Night
Mostly clear, with a low around 60.
Sunday
Mostly sunny, with a high near 88.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 56.
Monday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WY
 43.86°N 104.21°W (Elev. 4380 ft)
10:21 pm MDT Jun 1, 2026
12am MDT Jun 2, 2026-6pm MDT Jun 8, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database