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

Risks of Severe Thunderstorms and Excessive Rainfall; Fire Weather Concerns and Record Warmth

Severe thunderstorms and flash flooding risks increase across the center of the nation today. Meanwhile, ongoing thunderstorms and flash flooding will linger along the Gulf Coast states through the evening. The Great Basin and Intermountain West, warm temperatures and dry fuels with dry lightning may enhance fire weather potential. In addition, across interior Alaska, Red Flag Warning are posted. Read More >

Hazardous Weather Conditions

Current conditions at

Salmon, Lemhi County Airport (KSMN)

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

Partly Cloudy

71°F

22°C

Humidity 43%
Wind Speed N 14 MPH
Barometer 29.86 in (1011.18 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 20 Jun 02:56 PM MDT
Extended Forecast for

18 Miles NE Challis ID

Red Flag Warning June 20, 03:04pm until June 20, 09:00pm
Click here for hazard details and duration
Red Flag Warning
  •  
    Red Flag Warning June 20, 03:04pm until June 20, 09:00pm

    NOW until 9:00pm Sat

    Red Flag Warning

  • This Afternoon

    High: 74 °F

    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms before 9pm, then a slight chance of rain between 9pm and midnight. Cloudy during the early evening, then gradual clearing, with a low around 48. Southwest wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 48 °F

    Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 79. Calm wind becoming west northwest 5 to 9 mph in the afternoon.

    High: 79 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 47. North wind 6 to 11 mph, with gusts as high as 18 mph.

    Low: 47 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 80. North wind 3 to 7 mph.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm. High near 74. South southwest wind around 9 mph. Chance of precipitation is 80%.
Tonight
A chance of showers and thunderstorms before 9pm, then a slight chance of rain between 9pm and midnight. Cloudy during the early evening, then gradual clearing, with a low around 48. Southwest wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Sunny, with a high near 79. Calm wind becoming west northwest 5 to 9 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 47. North wind 6 to 11 mph, with gusts as high as 18 mph.
Monday
Sunny, with a high near 80. North wind 3 to 7 mph.
Monday Night
Mostly clear, with a low around 47.
Tuesday
Sunny, with a high near 86.
Tuesday Night
Mostly clear, with a low around 51.
Wednesday
Sunny, with a high near 86.
Wednesday Night
Partly cloudy, with a low around 52.
Thursday
Sunny, with a high near 86.
Thursday Night
Partly cloudy, with a low around 53.
Friday
Mostly sunny, with a high near 84.
Friday Night
A slight chance of rain. Partly cloudy, with a low around 50.
Saturday
A chance of rain and thunderstorms. Partly sunny, with a high near 74.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
18 Miles NE Challis ID
 44.72°N 114.02°W (Elev. 4846 ft)
Last Update:
2:01 pm MDT Jun 20, 2026
Forecast Valid:
3pm MDT Jun 20, 2026-6pm MDT Jun 27, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation