National Weather Service Forecast for: Libby MT
Issued by: National Weather Service Missoula, MT
Updated: 2:01 am MDT Aug 20, 2026
 
Overnight

Overnight: Patchy smoke. Mostly clear, with a low around 51. Calm wind.
Patchy Smoke

 Thursday

Thursday: Patchy smoke before 1pm. Sunny and hot, with a high near 97. Calm wind.
Patchy Smoke

 Thursday
Night
Thursday Night: Mostly clear, with a low around 52. Light and variable wind.
Mostly Clear

 Friday

Friday: Mostly sunny and hot, with a high near 100. Calm wind.
Hot

 Friday
Night
Friday Night: A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 58. Calm wind.
Mostly Cloudy
then Slight
Chance Rain
 Saturday

Saturday: A 20 percent chance of rain before noon. Partly sunny and hot, with a high near 96.
Slight Chance
Rain then
Mostly Sunny
 Saturday
Night
Saturday Night: A chance of showers and thunderstorms before 9pm, then a chance of rain after 9pm. Mostly cloudy, with a low around 53. Chance of precipitation is 40%.
Chance
Showers
 Sunday

Sunday: Mostly sunny, with a high near 82.
Mostly Sunny

 Sunday
Night
Sunday Night: Mostly clear, with a low around 45.
Mostly Clear
Lo 51 °F Hi 97 °F Lo 52 °F Hi 100 °F Lo 58 °F Hi 96 °F Lo 53 °F Hi 82 °F Lo 45 °F

 

Overnight
 
 Patchy smoke. Mostly clear, with a low around 51. Calm wind.
Thursday
 
 Patchy smoke before 1pm. Sunny and hot, with a high near 97. Calm wind.
Thursday Night
 
 Mostly clear, with a low around 52. Light and variable wind.
Friday
 
 Mostly sunny and hot, with a high near 100. Calm wind.
Friday Night
 
 A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 58. Calm wind.
Saturday
 
 A 20 percent chance of rain before noon. Partly sunny and hot, with a high near 96.
Saturday Night
 
 A chance of showers and thunderstorms before 9pm, then a chance of rain after 9pm. Mostly cloudy, with a low around 53. Chance of precipitation is 40%.
Sunday
 
 Mostly sunny, with a high near 82.
Sunday Night
 
 Mostly clear, with a low around 45.
Monday
 
 Sunny, with a high near 88.
Monday Night
 
 Mostly clear, with a low around 47.
Tuesday
 
 Sunny, with a high near 91.
Tuesday Night
 
 Partly cloudy, with a low around 50.
Wednesday
 
 Sunny, with a high near 89.

 

Forecast from NOAA-NWS for Libby MT.