Areas of Excessive Rainfall and Severe Thunderstorms; Fire Weather Concerns in the Northern Plains and Four Corners Region

Widespread showers and thunderstorms may bring areas of flash flooding across much of the Southern Plains into the Gulf Coast region and the upper Ohio River Valley into the Mid-Atlantic. A large Pacific storm will bring widespread rain, gusty winds, and mountain snow to California and the Great Basin. Fire weather concerns expected in the Northern Plains and the Four Corners region. Read More >

Current conditions at

Salmon, Lemhi County Airport (KSMN)

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

Clear

48°F

9°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 29.77 in (1008.13 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 27 May 12:35 AM MDT
Extended Forecast for

18 Miles WSW Salmon ID

  • Overnight

    Overnight: Patchy fog after 5am.  Otherwise, partly cloudy, with a low around 42. Light north northeast wind.

    Low: 42 °F

    Patchy Fog

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms after noon.  Patchy fog before 7am.  Otherwise, partly sunny, with a high near 77. Calm wind becoming east 5 to 9 mph in the afternoon.

    High: 77 °F

    Patchy Fog
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 9pm, then a slight chance of rain between 9pm and 10pm.  Partly cloudy, with a low around 46. Southeast wind 5 to 8 mph becoming calm  in the evening.  Chance of precipitation is 30%.

    Low: 46 °F

    Chance
    Showers then
    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of rain after noon.  Mostly sunny, with a high near 81. Light and variable wind becoming south southeast 9 to 14 mph in the morning. Winds could gust as high as 26 mph.

    High: 81 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 45. South southeast wind 9 to 14 mph becoming light and variable  after midnight. Winds could gust as high as 28 mph.

    Low: 45 °F

    Partly Cloudy

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 9pm, then rain likely after 9pm.  Mostly cloudy, with a low around 43. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 43 °F

    Showers
    Likely

  • Saturday

    Saturday: Rain before noon, then showers and possibly a thunderstorm after noon.  Cloudy, with a high near 59.

    High: 59 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before midnight, then a chance of rain after midnight.  Mostly cloudy, with a low around 39.

    Low: 39 °F

    Showers

Detailed Forecast

Overnight
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 42. Light north northeast wind.
Wednesday
A 50 percent chance of showers and thunderstorms after noon. Patchy fog before 7am. Otherwise, partly sunny, with a high near 77. Calm wind becoming east 5 to 9 mph in the afternoon.
Wednesday Night
A chance of showers and thunderstorms before 9pm, then a slight chance of rain between 9pm and 10pm. Partly cloudy, with a low around 46. Southeast wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 30%.
Thursday
A 20 percent chance of rain after noon. Mostly sunny, with a high near 81. Light and variable wind becoming south southeast 9 to 14 mph in the morning. Winds could gust as high as 26 mph.
Thursday Night
Partly cloudy, with a low around 45. South southeast wind 9 to 14 mph becoming light and variable after midnight. Winds could gust as high as 28 mph.
Friday
A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 76.
Friday Night
Showers likely and possibly a thunderstorm before 9pm, then rain likely after 9pm. Mostly cloudy, with a low around 43. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Rain before noon, then showers and possibly a thunderstorm after noon. Cloudy, with a high near 59.
Saturday Night
Showers and possibly a thunderstorm before midnight, then a chance of rain after midnight. Mostly cloudy, with a low around 39.
Sunday
A chance of rain before noon, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 64.
Sunday Night
A chance of rain and thunderstorms. Mostly cloudy, with a low around 38.
Monday
A chance of rain and thunderstorms. Partly sunny, with a high near 68.
Monday Night
A slight chance of rain. Partly cloudy, with a low around 40.
Tuesday
Mostly sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
18 Miles WSW Salmon ID
 45.09°N 114.25°W (Elev. 5344 ft)
12:21 am MDT May 27, 2026
12am MDT May 27, 2026-6pm MDT Jun 2, 2026
 
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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