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

Tracking Atmospheric River for the West Coast; Space Weather Storming Continues

An atmospheric river will bring threats of gusty to high winds and heavy rainfall to California mainly Thursday into Saturday which may bring areas of flooding and wind damage. Heavy snow will be possible over the Sierra Nevada mountains Thursday into Friday associated with the atmospheric river. Minor to severe geomagnetic storming (space weather) is expected to continue into early Thursday. Read More >

Current conditions at

HARLEM (HRLM)

Lat: 48.54333°NLon: 108.83472°WElev: 2358.0ft.

NA

33°F

1°C

Humidity 86%
Wind Speed ESE 3 MPH
Barometer NA
Dewpoint 30°F (-1°C)
Visibility NA
Last update 13 Nov 12:00 AM MST
Extended Forecast for

Chinook MT

  • Overnight

    Overnight: Partly cloudy, with a low around 29. Light east wind.

    Low: 29 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 66. Light and variable wind becoming southwest 10 to 15 mph in the morning. Winds could gust as high as 26 mph.

    High: 66 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 44. West southwest wind 14 to 16 mph, with gusts as high as 30 mph.

    Low: 44 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of rain after 11am. Mostly cloudy, with a high near 61. Breezy, with a west southwest wind 17 to 22 mph increasing to 24 to 29 mph in the afternoon. Winds could gust as high as 41 mph.

    High: 61 °F

    Slight Chance
    Rain and
    Breezy

  • Friday Night

    Friday Night: A slight chance of rain, mixing with snow after 8pm, then gradually ending. Mostly cloudy, with a low around 27. Blustery, with a west wind 15 to 23 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.

    Low: 27 °F

    Slight Chance
    Rain/Snow and
    Blustery then
    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 48. West southwest wind around 8 mph becoming south in the morning.

    High: 48 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 26. Southeast wind around 6 mph.

    Low: 26 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 51. East southeast wind 6 to 9 mph.

    High: 51 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 29. Light east wind.
Thursday
Sunny, with a high near 66. Light and variable wind becoming southwest 10 to 15 mph in the morning. Winds could gust as high as 26 mph.
Thursday Night
Mostly cloudy, with a low around 44. West southwest wind 14 to 16 mph, with gusts as high as 30 mph.
Friday
A 20 percent chance of rain after 11am. Mostly cloudy, with a high near 61. Breezy, with a west southwest wind 17 to 22 mph increasing to 24 to 29 mph in the afternoon. Winds could gust as high as 41 mph.
Friday Night
A slight chance of rain, mixing with snow after 8pm, then gradually ending. Mostly cloudy, with a low around 27. Blustery, with a west wind 15 to 23 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.
Saturday
Mostly sunny, with a high near 48. West southwest wind around 8 mph becoming south in the morning.
Saturday Night
Partly cloudy, with a low around 26. Southeast wind around 6 mph.
Sunday
Mostly sunny, with a high near 51. East southeast wind 6 to 9 mph.
Sunday Night
Mostly cloudy, with a low around 25.
Monday
A slight chance of snow before 8am, then a slight chance of rain and snow. Mostly cloudy, with a high near 42.
Monday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 20.
Tuesday
A slight chance of rain and snow. Partly sunny, with a high near 38.
Tuesday Night
Mostly cloudy, with a low around 19.
Wednesday
Partly sunny, with a high near 42.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chinook MT
 48.6°N 109.23°W (Elev. 2408 ft)
Last Update:
9:31 pm MST Nov 12, 2025
Forecast Valid:
1am MST Nov 13, 2025-6pm MST Nov 19, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation