Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Hazardous Weather Conditions

Current conditions at

Mondell Field (KECS)

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

Mostly Cloudy

36°F

2°C

Humidity 65%
Wind Speed N 5 mph
Barometer 29.69 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 9 Dec 4:35 am MST
Extended Forecast for

3 Miles NNE Newcastle WY

  • Overnight

    Overnight: A 30 percent chance of snow after 5am.  Mostly cloudy, with a steady temperature around 36. North wind around 6 mph.

    Low: 36 °F

    Chance Snow

  • Tuesday

    Tuesday: Rain likely before 4pm, then a chance of rain and snow.  Mostly cloudy, with a high near 46. Breezy, with a northwest wind 13 to 18 mph increasing to 24 to 29 mph in the afternoon. Winds could gust as high as 40 mph.  Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 46 °F

    Breezy. Rain
    Likely then
    Rain/Snow
    Likely

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 22. Wind chill values as low as 14. Blustery, with a northwest wind 20 to 25 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 37 mph.

    Low: 22 °F

    Mostly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Wednesday

    Wednesday: A chance of snow before 3pm, then a chance of rain and snow between 3pm and 4pm, then a chance of rain after 4pm.  Mostly cloudy, with a high near 38. Wind chill values as low as 17. Light and variable wind becoming northwest 5 to 7 mph in the morning. Winds could gust as high as 15 mph.  Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    High: 38 °F

    Chance Snow
    then Chance
    Rain/Snow

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain.  Mostly cloudy, with a steady temperature around 37. Northwest wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 37 °F

    Chance Rain

  • Thursday

    Thursday: A chance of rain before 8am, then a chance of rain and snow between 8am and 9am, then rain likely after 9am.  Mostly cloudy, with a high near 45. Northwest wind 7 to 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 45 °F

    Chance
    Rain/Snow
    then Rain
    Likely

  • Thursday Night

    Thursday Night: Rain and snow likely, becoming all snow after 7pm.  Mostly cloudy, with a low around 16. Northwest wind 10 to 13 mph, with gusts as high as 21 mph.  Chance of precipitation is 70%.

    Low: 16 °F

    Rain/Snow
    Likely then
    Snow Likely

  • Friday

    Friday: A chance of snow.  Mostly cloudy, with a high near 24. Northwest wind around 7 mph becoming southeast in the afternoon.

    High: 24 °F

    Chance Snow

  • Friday Night

    Friday Night: A chance of snow, mainly before 11pm.  Mostly cloudy, with a low around 15.

    Low: 15 °F

    Chance Snow

Detailed Forecast

Overnight
A 30 percent chance of snow after 5am. Mostly cloudy, with a steady temperature around 36. North wind around 6 mph.
Tuesday
Rain likely before 4pm, then a chance of rain and snow. Mostly cloudy, with a high near 46. Breezy, with a northwest wind 13 to 18 mph increasing to 24 to 29 mph in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Tuesday Night
Partly cloudy, with a low around 22. Wind chill values as low as 14. Blustery, with a northwest wind 20 to 25 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 37 mph.
Wednesday
A chance of snow before 3pm, then a chance of rain and snow between 3pm and 4pm, then a chance of rain after 4pm. Mostly cloudy, with a high near 38. Wind chill values as low as 17. Light and variable wind becoming northwest 5 to 7 mph in the morning. Winds could gust as high as 15 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a steady temperature around 37. Northwest wind 8 to 10 mph, with gusts as high as 20 mph.
Thursday
A chance of rain before 8am, then a chance of rain and snow between 8am and 9am, then rain likely after 9am. Mostly cloudy, with a high near 45. Northwest wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday Night
Rain and snow likely, becoming all snow after 7pm. Mostly cloudy, with a low around 16. Northwest wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Friday
A chance of snow. Mostly cloudy, with a high near 24. Northwest wind around 7 mph becoming southeast in the afternoon.
Friday Night
A chance of snow, mainly before 11pm. Mostly cloudy, with a low around 15.
Saturday
A slight chance of snow before 11am. Partly sunny, with a high near 27.
Saturday Night
Partly cloudy, with a low around 14.
Sunday
Mostly sunny, with a high near 41.
Sunday Night
Partly cloudy, with a low around 24.
Monday
Mostly sunny, with a high near 41.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Newcastle WY
 43.88°N 104.18°W (Elev. 4800 ft)
4:41 am MST Dec 9, 2025
4am MST Dec 9, 2025-6pm MST Dec 15, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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