Areas of Extreme Heat and Fire Weather in the Northwest U.S.; Heavy Rain in the West and South-central U.S.

Extreme heat will continue in the interior Northwest into midweek before finally waning. Hot temperatures, dry, gusty winds, and isolated dry thunderstorms will bring critical fire weather. Heavy rain and thunderstorms are expected across portions of the Great Basin, Rockies, and central/southern Plains. An atmospheric river will bring heavy rain and strong winds to southwest Alaska. Read More >

Current conditions at

Salmon, Lemhi County Airport (KSMN)

Lat: 45.11667°NLon: 113.88333°WElev: 4045.0ft.

Clear

81°F

27°C

Humidity 36%
Wind Speed NNW 4 MPH
Barometer 30.06 in (1017.95 mb)
Dewpoint 52°F (11°C)
Visibility 8.00 mi
Heat Index80°F (27°C)
Last update 26 Aug 02:20 PM MDT
Extended Forecast for

25 Miles SW Salmon ID

Flood Watch August 27, 12:00pm until August 28, 12:00am
Click here for hazard details and duration
Flood Watch
  • This Afternoon

    This Afternoon: A 50 percent chance of showers and thunderstorms.  Cloudy, with a high near 64. East wind around 7 mph.

    High: 64 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 9pm, then a chance of rain after 9pm.  Cloudy, with a low around 49. Southeast wind 3 to 6 mph.  Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 49 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Rain likely, then showers and possibly a thunderstorm after 9am.  High near 51. Light and variable wind becoming east northeast 5 to 7 mph in the morning.  Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 51 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before midnight, then rain likely after midnight.  Low around 47. Northeast wind around 6 mph becoming south southwest after midnight.  Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 47 °F

    Showers

  • Thursday

    Thursday: Rain likely, then showers and possibly a thunderstorm after 9am.  High near 52. West southwest wind 6 to 8 mph.  Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 52 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 9pm, then a chance of rain, mainly between 9pm and midnight.  Mostly cloudy, with a low around 44. Chance of precipitation is 40%.

    Low: 44 °F

    Chance
    Showers

  • Friday

    Friday: A slight chance of rain, then a chance of showers and thunderstorms after noon.  Partly sunny, with a high near 56. Chance of precipitation is 30%.

    High: 56 °F

    Slight Chance
    Rain then
    Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 50 percent chance of showers and thunderstorms. Cloudy, with a high near 64. East wind around 7 mph.
Tonight
A chance of showers and thunderstorms before 9pm, then a chance of rain after 9pm. Cloudy, with a low around 49. Southeast wind 3 to 6 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
Rain likely, then showers and possibly a thunderstorm after 9am. High near 51. Light and variable wind becoming east northeast 5 to 7 mph in the morning. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
Showers and possibly a thunderstorm before midnight, then rain likely after midnight. Low around 47. Northeast wind around 6 mph becoming south southwest after midnight. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Rain likely, then showers and possibly a thunderstorm after 9am. High near 52. West southwest wind 6 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
A chance of showers and thunderstorms before 9pm, then a chance of rain, mainly between 9pm and midnight. Mostly cloudy, with a low around 44. Chance of precipitation is 40%.
Friday
A slight chance of rain, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 56. Chance of precipitation is 30%.
Friday Night
Partly cloudy, with a low around 45.
Saturday
Mostly sunny, with a high near 60.
Saturday Night
Partly cloudy, with a low around 47.
Sunday
Mostly sunny, with a high near 62.
Sunday Night
Partly cloudy, with a low around 46.
Labor Day
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 61.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
25 Miles SW Salmon ID
 44.9°N 114.24°W (Elev. 8597 ft)
3:30 am MDT Aug 26, 2025
2pm MDT Aug 26, 2025-6pm MDT Sep 1, 2025
 
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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