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

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

Hailey, Friedman Memorial Airport (KSUN)

Lat: 43.5°NLon: 114.3°WElev: 5318.0ft.

Partly Cloudy

27°F

-3°C

Humidity 100%
Wind Speed NW 8 MPH
Barometer 30.26 in (1024.72 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 08 Dec 03:15 AM MST
Extended Forecast for

Arco ID

  • Overnight

    Overnight: Partly cloudy, with a low around 22. Northwest wind around 9 mph.

    Low: 22 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 41. Northwest wind 6 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 23 mph.

    High: 41 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 29. West southwest wind 16 to 18 mph, with gusts as high as 26 mph.

    Low: 29 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of rain. Partly sunny, with a high near 49. West southwest wind 16 to 18 mph, with gusts as high as 28 mph.

    High: 49 °F

    Slight Chance
    Rain

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 33. West southwest wind 14 to 16 mph, with gusts as high as 24 mph.

    Low: 33 °F

    Chance Rain

  • Wednesday

    Wednesday: A 30 percent chance of rain, mainly before 11am. Partly sunny, with a high near 53. Breezy.

    High: 53 °F

    Chance Rain
    and Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 52.

    High: 52 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 22. Northwest wind around 9 mph.
Monday
Partly sunny, with a high near 41. Northwest wind 6 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 23 mph.
Monday Night
Mostly cloudy, with a low around 29. West southwest wind 16 to 18 mph, with gusts as high as 26 mph.
Tuesday
A 20 percent chance of rain. Partly sunny, with a high near 49. West southwest wind 16 to 18 mph, with gusts as high as 28 mph.
Tuesday Night
A 30 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 33. West southwest wind 14 to 16 mph, with gusts as high as 24 mph.
Wednesday
A 30 percent chance of rain, mainly before 11am. Partly sunny, with a high near 53. Breezy.
Wednesday Night
Mostly cloudy, with a low around 34.
Thursday
Mostly sunny, with a high near 52.
Thursday Night
Partly cloudy, with a low around 29.
Friday
Mostly sunny, with a high near 48.
Friday Night
Partly cloudy, with a low around 25.
Saturday
Mostly sunny, with a high near 46.
Saturday Night
Partly cloudy, with a low around 23.
Sunday
Mostly sunny, with a high near 45.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Arco ID
 43.64°N 113.3°W (Elev. 6066 ft)
Last Update:
1:03 am MST Dec 8, 2025
Forecast Valid:
3am MST Dec 8, 2025-6pm MST Dec 14, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation