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

Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

Current conditions at

Salmon, Lemhi County Airport (KSMN)

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

Clear

52°F

11°C

Humidity 50%
Wind Speed N 0 MPH
Barometer 30.04 in (1017.27 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 18 Jun 02:05 AM MDT
Extended Forecast for

21 Miles SE Salmon ID

  • Overnight

    Overnight: Mostly clear, with a low around 44. Calm wind.

    Low: 44 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 77. Light and variable wind becoming northwest 9 to 14 mph in the morning. Winds could gust as high as 21 mph.

    High: 77 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 48. Northwest wind 9 to 14 mph becoming light and variable. Winds could gust as high as 22 mph.

    Low: 48 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 82. Light and variable wind becoming west northwest 5 to 8 mph in the afternoon.

    High: 82 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 55. West northwest wind 5 to 10 mph becoming light and variable after midnight.

    Low: 55 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of rain, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 71. Chance of precipitation is 70%.

    High: 71 °F

    Chance Rain
    then Showers
    Likely

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 44. Calm wind.
Thursday
Sunny, with a high near 77. Light and variable wind becoming northwest 9 to 14 mph in the morning. Winds could gust as high as 21 mph.
Thursday Night
Partly cloudy, with a low around 48. Northwest wind 9 to 14 mph becoming light and variable. Winds could gust as high as 22 mph.
Juneteenth
Mostly sunny, with a high near 82. Light and variable wind becoming west northwest 5 to 8 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 55. West northwest wind 5 to 10 mph becoming light and variable after midnight.
Saturday
A chance of rain, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 71. Chance of precipitation is 70%.
Saturday Night
Partly cloudy, with a low around 48.
Sunday
Sunny, with a high near 74.
Sunday Night
Mostly clear, with a low around 46.
Monday
Sunny, with a high near 77.
Monday Night
Mostly clear, with a low around 48.
Tuesday
Sunny, with a high near 82.
Tuesday Night
Mostly clear, with a low around 53.
Wednesday
Sunny, with a high near 80.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
21 Miles SE Salmon ID
 45.01°N 113.56°W (Elev. 5433 ft)
Last Update:
2:01 am MDT Jun 18, 2026
Forecast Valid:
2am MDT Jun 18, 2026-6pm MDT Jun 24, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation