Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Current conditions at

Mondell Field (KECS)

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

Fair

34°F

1°C

Humidity 65%
Wind Speed NW 5 mph
Barometer 30.07 in
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 7 Dec 3:35 pm MST
Extended Forecast for

15 Miles SE Newcastle WY

  • Tonight

    Tonight: Partly cloudy, with a low around 25. Northwest wind 5 to 7 mph becoming calm.

    Low: 25 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 40. Northwest wind 7 to 13 mph, with gusts as high as 25 mph.

    High: 40 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 28. Northwest wind 6 to 16 mph, with gusts as high as 23 mph.

    Low: 28 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of rain between 11am and 4pm, then a chance of snow after 4pm.  Partly sunny, with a high near 49. Breezy, with a west wind 20 to 28 mph, with gusts as high as 39 mph.  Chance of precipitation is 30%.

    High: 49 °F

    Breezy.
    Chance Rain
    then Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: A 30 percent chance of snow.  Mostly cloudy, with a low around 28. Blustery, with a northwest wind 20 to 25 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 39 mph.

    Low: 28 °F

    Chance Snow
    and Blustery

  • Wednesday

    Wednesday: Snow likely before 3pm, then rain and snow likely.  Mostly cloudy, with a high near 36. South wind 8 to 15 mph, with gusts as high as 21 mph.  Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 36 °F

    Snow Likely
    then
    Rain/Snow
    Likely

  • Wednesday Night

    Wednesday Night: Rain and snow likely before midnight, then a chance of snow.  Mostly cloudy, with a low around 25. Northwest wind 10 to 16 mph, with gusts as high as 28 mph.  Chance of precipitation is 70%.

    Low: 25 °F

    Rain/Snow
    Likely then
    Chance Snow

  • Thursday

    Thursday: A chance of snow.  Mostly cloudy, with a high near 29. Northwest wind 11 to 15 mph, with gusts as high as 24 mph.

    High: 29 °F

    Chance Snow

  • Thursday Night

    Thursday Night: A chance of snow.  Mostly cloudy, with a low around 12.

    Low: 12 °F

    Chance Snow

Detailed Forecast

Tonight
Partly cloudy, with a low around 25. Northwest wind 5 to 7 mph becoming calm.
Monday
Mostly sunny, with a high near 40. Northwest wind 7 to 13 mph, with gusts as high as 25 mph.
Monday Night
Mostly cloudy, with a low around 28. Northwest wind 6 to 16 mph, with gusts as high as 23 mph.
Tuesday
A chance of rain between 11am and 4pm, then a chance of snow after 4pm. Partly sunny, with a high near 49. Breezy, with a west wind 20 to 28 mph, with gusts as high as 39 mph. Chance of precipitation is 30%.
Tuesday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 28. Blustery, with a northwest wind 20 to 25 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 39 mph.
Wednesday
Snow likely before 3pm, then rain and snow likely. Mostly cloudy, with a high near 36. South wind 8 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Wednesday Night
Rain and snow likely before midnight, then a chance of snow. Mostly cloudy, with a low around 25. Northwest wind 10 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 70%.
Thursday
A chance of snow. Mostly cloudy, with a high near 29. Northwest wind 11 to 15 mph, with gusts as high as 24 mph.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 12.
Friday
A chance of snow, mainly before 11am. Mostly cloudy, with a high near 19.
Friday Night
A slight chance of snow. Mostly cloudy, with a low around 11.
Saturday
Partly sunny, with a high near 30.
Saturday Night
Partly cloudy, with a low around 18.
Sunday
Mostly sunny, with a high near 39.
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ABOUT THIS FORECAST

 
Point Forecast:
15 Miles SE Newcastle WY
 43.67°N 104.04°W (Elev. 5246 ft)
3:12 pm MST Dec 7, 2025
3pm MST Dec 7, 2025-6pm MST Dec 14, 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