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Libby, Montana 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Libby MT
National Weather Service Forecast for: Libby MT
Issued by: National Weather Service Missoula, MT
Updated: 2:30 pm MDT Jun 26, 2025
 
This
Afternoon
This Afternoon: Mostly sunny, with a high near 82. Southwest wind around 6 mph.
Mostly Sunny

Tonight

Tonight: A 30 percent chance of rain after midnight.  Mostly cloudy, with a low around 51. West wind around 6 mph becoming calm  in the evening.
Mostly Cloudy
then Chance
Rain
Friday

Friday: A 20 percent chance of rain after noon.  Mostly sunny, with a high near 78. Calm wind becoming west southwest around 6 mph in the afternoon. Winds could gust as high as 18 mph.
Mostly Sunny
then Slight
Chance Rain
Friday
Night
Friday Night: Partly cloudy, with a low around 47. West wind around 6 mph becoming calm  in the evening.
Partly Cloudy

Saturday

Saturday: Patchy fog before 7am.  Otherwise, mostly sunny, with a high near 80. Calm wind becoming west southwest around 6 mph in the afternoon.
Patchy Fog
then Mostly
Sunny
Saturday
Night
Saturday Night: Mostly clear, with a low around 45.
Mostly Clear

Sunday

Sunday: Sunny, with a high near 89.
Sunny

Sunday
Night
Sunday Night: Clear, with a low around 50.
Clear

Monday

Monday: Sunny and hot, with a high near 96.
Hot

Hi 82 °F Lo 51 °F Hi 78 °F Lo 47 °F Hi 80 °F Lo 45 °F Hi 89 °F Lo 50 °F Hi 96 °F

 

This Afternoon
 
Mostly sunny, with a high near 82. Southwest wind around 6 mph.
Tonight
 
A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 51. West wind around 6 mph becoming calm in the evening.
Friday
 
A 20 percent chance of rain after noon. Mostly sunny, with a high near 78. Calm wind becoming west southwest around 6 mph in the afternoon. Winds could gust as high as 18 mph.
Friday Night
 
Partly cloudy, with a low around 47. West wind around 6 mph becoming calm in the evening.
Saturday
 
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 80. Calm wind becoming west southwest around 6 mph in the afternoon.
Saturday Night
 
Mostly clear, with a low around 45.
Sunday
 
Sunny, with a high near 89.
Sunday Night
 
Clear, with a low around 50.
Monday
 
Sunny and hot, with a high near 96.
Monday Night
 
Mostly clear, with a low around 55.
Tuesday
 
Mostly sunny and hot, with a high near 97.
Tuesday Night
 
Partly cloudy, with a low around 55.
Wednesday
 
A slight chance of rain. Sunny, with a high near 95.

 

Forecast from NOAA-NWS for Libby MT.

Weather Forecast Discussion
170
FXUS65 KMSO 261812
AFDMSO

Area Forecast Discussion
National Weather Service Missoula MT
1212 PM MDT Thu Jun 26 2025

.DISCUSSION...

KEY MESSAGES:

- Scattered showers/isolated thunderstorms today, gusty outflow
  wind potential.

- Isolated/scattered thunderstorm pattern Thursday through
  Saturday.

- Warm up expected to start next week, temperatures 10 to 15
  degrees above normal.

- Chances for showers and thunderstorms increases after 2 July.


Showers and thunderstorms are possible today as a weak wave
transits the Northern Rockies today. Missoula and northward clouds
may inhibit convection slightly with results similar to yesterday
virga, sprinkles, and brief showers with large rain drops.
Elsewhere, any showers or thunderstorms will be capable of gusty
outflow winds and brief but heavy showers.

Friday similar conditions will have a similar result, albeit in
much smaller area, likely southern Bitterroot, Anaconda Range,
Lemhi County ID, and southwest MT.

High pressure builds over the region Sunday and Monday onward
expect temperatures 10 to 15 degrees above normal.

The models have been very consistent trying to pinch off energy,
from the overall flow, over northern California on the 2nd. If
this scenario happens southwesterly flow will advect or move a
unstable air mass into the Northern Rockies. While details are
limited, typical scenarios like this produce cloud storms/ virga
on day one, with increasing chances and expanding coverage of
thunderstorms each subsequent afternoon.

&&

.AVIATION... A moist air mass over the region with southwest flow
aloft means we`ll have another round of afternoon showers and
thunderstorms. Terminal KBTM is the most likely to be effected by
afternoon and evening thunderstorms. Terminals KMSO, KHRF, and
KSMN are in the area where we expect convection to initiate, so
storms are not expected to be mature in those areas but the
convection will be noticeable. Convection in the region should die
down by 27/02Z or 27/03Z.



&&

.MSO WATCHES/WARNINGS/ADVISORIES...
MT...None.
ID...None.
&&

$$
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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