Tracking Atmospheric River in the Northwest U.S. and Clipper with Winter Weather in the Northeast U.S.

A prolonged atmospheric river will continue to bring gusty winds, heavy rainfall which may lead to urban and river flooding with possible landslides, and heavy inter-mountain snow over the Pacific Northwest into the northern Rockies through Thursday. A clipper will cross the Great Lakes and Northeast U.S. into Thursday with areas of moderate to heavy snow and mixed wintry precipitation. Read More >

Hazardous Weather Conditions

Current conditions at

Mondell Field (KECS)

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

Overcast

32°F

0°C

Humidity 87%
Wind Speed S 9 mph
Barometer 29.94 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 10 Dec 11:55 am MST
Extended Forecast for

6 Miles WNW Newcastle WY

  • This Afternoon

    This Afternoon: Rain and snow likely, becoming all rain after 4pm.  Cloudy, with a temperature falling to around 35 by 5pm. East wind 5 to 7 mph, with gusts as high as 15 mph.  Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 40 °F

    Rain/Snow
    Likely

  • Tonight

    Tonight: Rain likely, mainly before 8pm.  Cloudy, then gradually becoming partly cloudy, with a temperature rising to around 40 by 2am. North wind 6 to 8 mph.  Chance of precipitation is 70%.

    Low: 35 °F

    Rain Likely
    then Chance
    Rain

  • Thursday

    Thursday: A 20 percent chance of rain after 11am.  Partly sunny, with a high near 52. Northwest wind 9 to 16 mph, with gusts as high as 25 mph.

    High: 52 °F

    Slight Chance
    Rain

  • Thursday Night

    Thursday Night: Rain likely before 9pm, then rain and snow likely between 9pm and 10pm, then snow likely after 10pm.  Cloudy, with a low around 24. Blustery, with a northwest wind 15 to 20 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 28 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 24 °F

    Rain/Snow
    Likely and
    Blustery then
    Chance Snow

  • Friday

    Friday: A 50 percent chance of snow.  Cloudy, with a high near 32. Northwest wind around 6 mph becoming southeast in the afternoon.  New snow accumulation of less than one inch possible.

    High: 32 °F

    Chance Snow

  • Friday Night

    Friday Night: A 20 percent chance of snow before 11pm.  Mostly cloudy, with a low around 19. South wind around 7 mph becoming north after midnight.

    Low: 19 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Saturday

    Saturday: A 20 percent chance of snow before 11am.  Partly sunny, with a high near 34. Northwest wind 6 to 9 mph, with gusts as high as 16 mph.

    High: 34 °F

    Slight Chance
    Snow then
    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 16. Southeast wind 5 to 7 mph.

    Low: 16 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 48.

    High: 48 °F

    Sunny

Detailed Forecast

This Afternoon
Rain and snow likely, becoming all rain after 4pm. Cloudy, with a temperature falling to around 35 by 5pm. East wind 5 to 7 mph, with gusts as high as 15 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Tonight
Rain likely, mainly before 8pm. Cloudy, then gradually becoming partly cloudy, with a temperature rising to around 40 by 2am. North wind 6 to 8 mph. Chance of precipitation is 70%.
Thursday
A 20 percent chance of rain after 11am. Partly sunny, with a high near 52. Northwest wind 9 to 16 mph, with gusts as high as 25 mph.
Thursday Night
Rain likely before 9pm, then rain and snow likely between 9pm and 10pm, then snow likely after 10pm. Cloudy, with a low around 24. Blustery, with a northwest wind 15 to 20 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday
A 50 percent chance of snow. Cloudy, with a high near 32. Northwest wind around 6 mph becoming southeast in the afternoon. New snow accumulation of less than one inch possible.
Friday Night
A 20 percent chance of snow before 11pm. Mostly cloudy, with a low around 19. South wind around 7 mph becoming north after midnight.
Saturday
A 20 percent chance of snow before 11am. Partly sunny, with a high near 34. Northwest wind 6 to 9 mph, with gusts as high as 16 mph.
Saturday Night
Partly cloudy, with a low around 16. Southeast wind 5 to 7 mph.
Sunday
Sunny, with a high near 48.
Sunday Night
Mostly clear, with a low around 27.
Monday
Sunny, with a high near 48.
Monday Night
Partly cloudy, with a low around 29.
Tuesday
Mostly sunny, with a high near 51.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles WNW Newcastle WY
 43.9°N 104.33°W (Elev. 4183 ft)
10:22 am MST Dec 10, 2025
12pm MST Dec 10, 2025-6pm MST Dec 16, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database