Severe Thunderstorms and Flooding from the Southern Plains to the Great Lakes; Record Heat in the East

Widely scattered severe thunderstorms may produce damaging winds, hail, and flash flooding from the southern Plains into the lower Great Lakes. Elevated to locally critical fire weather conditions will persist across portions of the Southwest and Southern High Plains due to gusty winds and dry conditions. An early-season heatwave will challenge temperature records across the eastern U.S.. Read More >

Current conditions at

Salmon, Lemhi County Airport (KSMN)

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

Clear

61°F

16°C

Humidity 25%
Wind Speed N 0 MPH
Barometer 30.06 in (1017.95 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 19 May 06:56 PM MDT
Extended Forecast for

12 Miles SSW Salmon ID

  • Tonight

    Tonight: A 20 percent chance of rain before 10pm.  Mostly cloudy, with a low around 39. North wind around 6 mph becoming calm  in the evening.

    Low: 39 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 63. Calm wind becoming north northwest 5 to 8 mph in the afternoon.

    High: 63 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly before 8pm, then a chance of rain after 9pm.  Mostly cloudy, with a low around 40. Northwest wind 3 to 7 mph.  Chance of precipitation is 60%.

    Low: 40 °F

    Showers
    Likely

  • Thursday

    Thursday: A slight chance of rain, mixing with snow after 9am, then gradually ending.  Mostly cloudy, then gradually becoming sunny, with a high near 63. North wind 5 to 11 mph, with gusts as high as 21 mph.  Chance of precipitation is 20%.

    High: 63 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 41. North wind 5 to 9 mph becoming calm  in the evening.

    Low: 41 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of rain before 10pm. Mostly cloudy, with a low around 39. North wind around 6 mph becoming calm in the evening.
Wednesday
Partly sunny, with a high near 63. Calm wind becoming north northwest 5 to 8 mph in the afternoon.
Wednesday Night
Showers and thunderstorms likely, mainly before 8pm, then a chance of rain after 9pm. Mostly cloudy, with a low around 40. Northwest wind 3 to 7 mph. Chance of precipitation is 60%.
Thursday
A slight chance of rain, mixing with snow after 9am, then gradually ending. Mostly cloudy, then gradually becoming sunny, with a high near 63. North wind 5 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 41. North wind 5 to 9 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 70.
Friday Night
Partly cloudy, with a low around 43.
Saturday
Sunny, with a high near 76.
Saturday Night
Partly cloudy, with a low around 47.
Sunday
Mostly sunny, with a high near 80.
Sunday Night
Partly cloudy, with a low around 50.
Memorial Day
Mostly sunny, with a high near 79. Breezy.
Monday Night
Partly cloudy, with a low around 46. Breezy.
Tuesday
A chance of rain. Mostly sunny, with a high near 68.
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles SSW Salmon ID
 45.01°N 113.96°W (Elev. 4600 ft)
2:01 pm MDT May 19, 2026
7pm MDT May 19, 2026-6pm MDT May 26, 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