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

Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Current conditions at

HARLEM (HRLM)

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

NA

37°F

3°C

Humidity 84%
Wind Speed E 1 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 20 Mar 08:00 AM MDT
Extended Forecast for

Chinook MT

  • Today

    Today: Cloudy, then gradually becoming mostly sunny, with a high near 78. Windy, with a west wind 13 to 18 mph increasing to 25 to 30 mph in the afternoon. Winds could gust as high as 41 mph.

    High: 78 °F

    Cloudy then
    Mostly Sunny
    and Windy

  • Tonight

    Tonight: Mostly cloudy, with a low around 54. Windy, with a west wind 20 to 30 mph, with gusts as high as 41 mph.

    Low: 54 °F

    Mostly Cloudy
    and Windy

  • Saturday

    Saturday: A 20 percent chance of rain between 3pm and 5pm. Cloudy, with a temperature falling to around 51 by 5pm. West wind 17 to 20 mph becoming north in the afternoon. Winds could gust as high as 28 mph.

    High: 59 °F⇓

    Slight Chance
    Rain

  • Saturday Night

    Saturday Night: A slight chance of rain and snow between midnight and 3am, then a slight chance of snow after 3am. Mostly cloudy, with a low around 26. North wind 6 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    Low: 26 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Sunday

    Sunday: Sunny, with a high near 54. South southeast wind 5 to 15 mph becoming west in the afternoon. Winds could gust as high as 23 mph.

    High: 54 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 27. Southwest wind 7 to 14 mph, with gusts as high as 22 mph.

    Low: 27 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 55. West northwest wind 6 to 11 mph, with gusts as high as 20 mph.

    High: 55 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 28. North wind 8 to 10 mph becoming east southeast after midnight.

    Low: 28 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 58.

    High: 58 °F

    Mostly Cloudy

Detailed Forecast

Today
Cloudy, then gradually becoming mostly sunny, with a high near 78. Windy, with a west wind 13 to 18 mph increasing to 25 to 30 mph in the afternoon. Winds could gust as high as 41 mph.
Tonight
Mostly cloudy, with a low around 54. Windy, with a west wind 20 to 30 mph, with gusts as high as 41 mph.
Saturday
A 20 percent chance of rain between 3pm and 5pm. Cloudy, with a temperature falling to around 51 by 5pm. West wind 17 to 20 mph becoming north in the afternoon. Winds could gust as high as 28 mph.
Saturday Night
A slight chance of rain and snow between midnight and 3am, then a slight chance of snow after 3am. Mostly cloudy, with a low around 26. North wind 6 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Sunday
Sunny, with a high near 54. South southeast wind 5 to 15 mph becoming west in the afternoon. Winds could gust as high as 23 mph.
Sunday Night
Mostly cloudy, with a low around 27. Southwest wind 7 to 14 mph, with gusts as high as 22 mph.
Monday
Partly sunny, with a high near 55. West northwest wind 6 to 11 mph, with gusts as high as 20 mph.
Monday Night
Mostly cloudy, with a low around 28. North wind 8 to 10 mph becoming east southeast after midnight.
Tuesday
Mostly cloudy, with a high near 58.
Tuesday Night
A slight chance of rain before midnight. Mostly cloudy, with a low around 39.
Wednesday
Mostly sunny, with a high near 64. Breezy.
Wednesday Night
Mostly cloudy, with a low around 25. Blustery.
Thursday
A slight chance of snow. Partly sunny, with a high near 46.
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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:
4:01 am MDT Mar 20, 2026
Forecast Valid:
8am MDT Mar 20, 2026-6pm MDT Mar 26, 2026
 
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