Heavy Rainfall in the Southern Plains and Mississippi Valley; Thunderstorms in Eastern Colorado on Thursday

A multiple day heavy rainfall event will begin to set up from the Southern Plains into the Mississippi Valley Thursday, peaking in intensity over the holiday weekend. Widely scattered thunderstorms are expected to develop across eastern Colorado Thursday afternoon and evening. Large hail will be the primary hazard. Read More >

Current conditions at

Salmon, Lemhi County Airport (KSMN)

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

Overcast

54°F

12°C

Humidity 54%
Wind Speed N 3 MPH
Barometer 30.03 in (1016.93 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 20 May 10:50 PM MDT
Extended Forecast for

30 Miles SSW Shoup ID

  • Tonight

    Tonight: A chance of rain, mixing with snow after 1am, then gradually ending.  Snow level 7700 feet lowering to 6400 feet after midnight . Mostly cloudy, with a low around 34. West northwest wind around 6 mph becoming calm  after midnight.  Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 34 °F

    Chance
    Rain/Snow

  • Thursday

    Thursday: Sunny, with a high near 58. North northeast wind 5 to 10 mph.

    High: 58 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 35. North wind 5 to 8 mph becoming calm  after midnight.

    Low: 35 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 64. Calm wind becoming west northwest 5 to 9 mph in the afternoon.

    High: 64 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 39. West northwest wind 5 to 10 mph becoming light and variable  in the evening. Winds could gust as high as 18 mph.

    Low: 39 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

  • Saturday Night

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

    Low: 45 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 72. Breezy.

    High: 72 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of rain, mixing with snow after 1am, then gradually ending. Snow level 7700 feet lowering to 6400 feet after midnight . Mostly cloudy, with a low around 34. West northwest wind around 6 mph becoming calm after midnight. Chance of precipitation is 30%. Little or no snow accumulation expected.
Thursday
Sunny, with a high near 58. North northeast wind 5 to 10 mph.
Thursday Night
Mostly cloudy, with a low around 35. North wind 5 to 8 mph becoming calm after midnight.
Friday
Mostly sunny, with a high near 64. Calm wind becoming west northwest 5 to 9 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 39. West northwest wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 18 mph.
Saturday
Sunny, with a high near 71.
Saturday Night
Partly cloudy, with a low around 45.
Sunday
Mostly sunny, with a high near 72. Breezy.
Sunday Night
Mostly clear, with a low around 45.
Memorial Day
Mostly sunny, with a high near 71. Breezy.
Monday Night
A slight chance of rain. Mostly cloudy, with a low around 43.
Tuesday
Rain likely and possibly a thunderstorm. Partly sunny, with a high near 62.
Tuesday Night
A chance of rain and thunderstorms. Mostly cloudy, with a low around 38.
Wednesday
A chance of rain and thunderstorms. Partly sunny, with a high near 59.
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ABOUT THIS FORECAST

 
Point Forecast:
30 Miles SSW Shoup ID
 44.97°N 114.53°W (Elev. 6001 ft)
2:01 pm MDT May 20, 2026
11pm MDT May 20, 2026-6pm MDT May 27, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database