Lemhi County Airport (SMN) Weather 07/13/2026
Today
72
Mostly Sunny then Showers Likely
Tonight
45
Rain then Partly Cloudy
Wednesday
75
Mostly Sunny then Chance T-storms
Wednesday Night
44
Partly Cloudy
Thursday
78
Mostly Sunny
Thursday Night
47
Partly Cloudy
Friday
78
Mostly Sunny then Chance T-storms
Friday Night
45
Mostly Clear
Independence Day
84
Sunny
Saturday Night
50
Clear
Sunday
88
Sunny
Sunday Night
55
Mostly Clear
Monday
89
Mostly Sunny
Weekly Forecast
Today
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Mostly sunny, with a high near 72. Calm wind. Chance of precipitation is 60%.
Tonight
Rain and possibly a thunderstorm before 10pm, then a slight chance of rain between 10pm and 11pm. Low around 45. Light and variable wind. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A 50 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 75. Calm wind becoming southwest around 5 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 44. West northwest wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 78. Calm wind becoming west southwest around 6 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 47.
Friday
A 40 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 78.
Friday Night
Mostly clear, with a low around 45.
Independence Day
Sunny, with a high near 84.
Saturday Night
Clear, with a low around 50.
Sunday
Sunny, with a high near 88.
Sunday Night
Mostly clear, with a low around 55.
Monday
Mostly sunny, with a high near 89.