Heavy Rainfall and Flooding in the Mid-Atlantic; Heat and Wildfire Concerns in the West

Slow moving showers and thunderstorms may result in flash flooding for portions of the mid-Atlantic region through tonight. Meanwhile, excessive heat will continue to build across the West through Tuesday. Heat Advisories and Extreme Heat Warnings are in effect. Fire Weather concerns continue for the West with dry and breezy conditions. Watching the tropics across the Southeast. Read More >

Current conditions at

HARLEM (HRLM)

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

NA

54°F

12°C

Humidity 96%
Wind Speed NNW 2 MPH
Barometer NA
Dewpoint 53°F (12°C)
Visibility NA
Last update 15 Jul 03:00 AM MDT
Extended Forecast for

Chinook MT

  • Overnight

    Overnight: Showers likely and possibly a thunderstorm before 4am, then a chance of showers and thunderstorms between 4am and 5am, then showers likely and possibly a thunderstorm after 5am.  Cloudy, with a low around 53. Northeast wind 11 to 13 mph, with gusts as high as 21 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 53 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Showers, mainly before 3pm.  High near 62. East northeast wind 11 to 14 mph, with gusts as high as 22 mph.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 62 °F

    Showers

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers, mainly before midnight.  Patchy fog after 5am.  Otherwise, mostly cloudy, with a low around 47. East wind 5 to 10 mph becoming light and variable  in the evening.

    Low: 47 °F

    Chance
    Showers and
    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 8am.  Otherwise, partly sunny, with a high near 69. Light east wind becoming southeast 5 to 10 mph in the morning. Winds could gust as high as 18 mph.

    High: 69 °F

    Patchy Fog
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 48. East southeast wind around 11 mph, with gusts as high as 20 mph.

    Low: 48 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 77. East southeast wind 10 to 13 mph, with gusts as high as 20 mph.

    High: 77 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 3am, then a slight chance of showers.  Partly cloudy, with a low around 50. East wind 6 to 8 mph becoming west northwest after midnight.  Chance of precipitation is 30%.

    Low: 50 °F

    Chance
    T-storms

  • Friday

    Friday: Mostly sunny, with a high near 79. West northwest wind 6 to 8 mph.

    High: 79 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

Detailed Forecast

Overnight
Showers likely and possibly a thunderstorm before 4am, then a chance of showers and thunderstorms between 4am and 5am, then showers likely and possibly a thunderstorm after 5am. Cloudy, with a low around 53. Northeast wind 11 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
Showers, mainly before 3pm. High near 62. East northeast wind 11 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
A 40 percent chance of showers, mainly before midnight. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 47. East wind 5 to 10 mph becoming light and variable in the evening.
Wednesday
Patchy fog before 8am. Otherwise, partly sunny, with a high near 69. Light east wind becoming southeast 5 to 10 mph in the morning. Winds could gust as high as 18 mph.
Wednesday Night
Partly cloudy, with a low around 48. East southeast wind around 11 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 77. East southeast wind 10 to 13 mph, with gusts as high as 20 mph.
Thursday Night
A chance of showers and thunderstorms before 3am, then a slight chance of showers. Partly cloudy, with a low around 50. East wind 6 to 8 mph becoming west northwest after midnight. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 79. West northwest wind 6 to 8 mph.
Friday Night
Mostly clear, with a low around 52.
Saturday
A slight chance of showers after noon. Mostly sunny, with a high near 87.
Saturday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 56.
Sunday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 55.
Monday
A slight chance of showers. Mostly sunny, with a high near 83.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Chinook MT
 48.59°N 109.26°W (Elev. 2408 ft)
2:55 am MDT Jul 15, 2025
3am MDT Jul 15, 2025-6pm MDT Jul 21, 2025
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database