Widespread Showers in the Eastern US; Severe Thunderstorms in the Plains; Heatwave in the Desert Southwest

Widespread showers and thunderstorms across much of the central and eastern U.S. will produce areas of excessive rainfall, especially in the southern Mid-Atlantic states. Scattered severe thunderstorms are expected from Montana into portions of the central/southern Plains this weekend. A heatwave will build in the Desert Southwest, in parts of Arizona, southeastern California, and southern Nevada. Read More >

Hazardous Weather Conditions

Current conditions at

Mondell Field (KECS)

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

Fair

57°F

14°C

Humidity 67%
Wind Speed N 6 mph
Barometer 30.07 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 15 Jun 6:15 am MDT
Extended Forecast for

Newcastle WY

  • Today

    Today: A 40 percent chance of showers and thunderstorms, mainly after 5pm. Some of the storms could be severe.  Mostly sunny, with a high near 87. East wind 5 to 10 mph becoming south in the morning. Winds could gust as high as 15 mph.

    High: 87 °F

    Sunny then
    Severe
    Thunderstorms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 9pm. Some of the storms could be severe.  Mostly cloudy, with a low around 61. Southeast wind 5 to 10 mph becoming northeast after midnight. Winds could gust as high as 15 mph.  Chance of precipitation is 60%.

    Low: 61 °F

    Severe
    Thunderstorms
    then Partly
    Cloudy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after noon.  Increasing clouds, with a high near 84. North wind 5 to 10 mph becoming east in the morning. Winds could gust as high as 15 mph.

    High: 84 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Some of the storms could be severe.  Low around 55. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.  Chance of precipitation is 90%.

    Low: 55 °F

    Severe
    Thunderstorms
    then Showers

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm.  High near 70. North wind 5 to 10 mph becoming east in the morning.  Chance of precipitation is 90%.

    High: 70 °F

    Showers
    Likely then
    T-storms

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms before midnight.  Mostly cloudy, with a low around 51. Southeast wind 5 to 10 mph becoming northwest in the evening.

    Low: 51 °F

    Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 75. West wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 75 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 56. Northwest wind around 5 mph becoming southeast in the evening.

    Low: 56 °F

    Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 86.

    High: 86 °F

    Sunny

Detailed Forecast

Today
A 40 percent chance of showers and thunderstorms, mainly after 5pm. Some of the storms could be severe. Mostly sunny, with a high near 87. East wind 5 to 10 mph becoming south in the morning. Winds could gust as high as 15 mph.
Tonight
Showers and thunderstorms likely, mainly before 9pm. Some of the storms could be severe. Mostly cloudy, with a low around 61. Southeast wind 5 to 10 mph becoming northeast after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 60%.
Monday
A 30 percent chance of showers and thunderstorms after noon. Increasing clouds, with a high near 84. North wind 5 to 10 mph becoming east in the morning. Winds could gust as high as 15 mph.
Monday Night
Showers and possibly a thunderstorm. Some of the storms could be severe. Low around 55. Northeast wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 90%.
Tuesday
Showers and possibly a thunderstorm. High near 70. North wind 5 to 10 mph becoming east in the morning. Chance of precipitation is 90%.
Tuesday Night
A 40 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 51. Southeast wind 5 to 10 mph becoming northwest in the evening.
Wednesday
Sunny, with a high near 75. West wind 5 to 10 mph, with gusts as high as 15 mph.
Wednesday Night
Clear, with a low around 56. Northwest wind around 5 mph becoming southeast in the evening.
Juneteenth
Sunny, with a high near 86.
Thursday Night
Mostly clear, with a low around 63.
Friday
Sunny, with a high near 90.
Friday Night
Mostly clear, with a low around 60.
Saturday
Sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WY
 43.86°N 104.21°W (Elev. 4380 ft)
4:09 am MDT Jun 15, 2025
6am MDT Jun 15, 2025-6pm MDT Jun 21, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database