National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

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 >

Current conditions at

ISLAND PARK (IPFI1)

Lat: 44.42051°NLon: 111.36741°WElev: 6337.0ft.

NA

29°F

-2°C

Humidity 99%
Wind Speed SW 3 MPH
Barometer NA
Dewpoint 29°F (-2°C)
Visibility NA
Last update 08 Dec 09:54 PM MST
Extended Forecast for

13 Miles SSW Island Park ID

  • Tonight

    Tonight: Snow likely before 5am, then snow, possibly mixed with rain. Steady temperature around 29. South wind 11 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of less than one inch possible.

    Low: 29 °F

    Chance Snow
    then
    Rain/Snow

  • Tuesday

    Tuesday: Rain and snow before 4pm, then a chance of snow. Snow level rising to 6600 feet in the afternoon. High near 39. South southwest wind 8 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 39 °F

    Rain/Snow

  • Tuesday Night

    Tuesday Night: Snow. Low around 28. West wind around 8 mph becoming south southwest in the evening. Chance of precipitation is 90%. New snow accumulation of around an inch possible.

    Low: 28 °F

    Snow

  • Wednesday

    Wednesday: Rain and snow, becoming all rain after 8am. Snow level 6800 feet rising to 8500 feet in the afternoon. High near 41. Southwest wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 41 °F

    Rain/Snow
    then Rain

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain. Snow level 8500 feet lowering to 7800 feet after midnight . Mostly cloudy, with a low around 31. South southwest wind 8 to 10 mph, with gusts as high as 22 mph.

    Low: 31 °F

    Chance Rain

  • Thursday

    Thursday: A 50 percent chance of rain. Snow level 7400 feet. Mostly cloudy, with a high near 41.

    High: 41 °F

    Chance Rain

  • Thursday Night

    Thursday Night: A 40 percent chance of rain. Snow level 7600 feet. Mostly cloudy, with a low around 30.

    Low: 30 °F

    Chance Rain

  • Friday

    Friday: A 40 percent chance of rain. Snow level 7300 feet. Mostly cloudy, with a high near 41.

    High: 41 °F

    Chance Rain

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Snow likely before 5am, then snow, possibly mixed with rain. Steady temperature around 29. South wind 11 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of less than one inch possible.
Tuesday
Rain and snow before 4pm, then a chance of snow. Snow level rising to 6600 feet in the afternoon. High near 39. South southwest wind 8 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Tuesday Night
Snow. Low around 28. West wind around 8 mph becoming south southwest in the evening. Chance of precipitation is 90%. New snow accumulation of around an inch possible.
Wednesday
Rain and snow, becoming all rain after 8am. Snow level 6800 feet rising to 8500 feet in the afternoon. High near 41. Southwest wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Wednesday Night
A 50 percent chance of rain. Snow level 8500 feet lowering to 7800 feet after midnight . Mostly cloudy, with a low around 31. South southwest wind 8 to 10 mph, with gusts as high as 22 mph.
Thursday
A 50 percent chance of rain. Snow level 7400 feet. Mostly cloudy, with a high near 41.
Thursday Night
A 40 percent chance of rain. Snow level 7600 feet. Mostly cloudy, with a low around 30.
Friday
A 40 percent chance of rain. Snow level 7300 feet. Mostly cloudy, with a high near 41.
Friday Night
Mostly cloudy, with a low around 27.
Saturday
Partly sunny, with a high near 41.
Saturday Night
Mostly cloudy, with a low around 22.
Sunday
A 20 percent chance of snow. Partly sunny, with a high near 40.
Sunday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 21.
Monday
A 30 percent chance of snow. Mostly cloudy, with a high near 38.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
13 Miles SSW Island Park ID
 44.38°N 111.41°W (Elev. 6250 ft)
Last Update:
10:31 pm MST Dec 8, 2025
Forecast Valid:
10pm MST Dec 8, 2025-6pm MST Dec 15, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation