Libby, Montana 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
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NWS Forecast for Libby MT
National Weather Service Forecast for:
Libby MT
Issued by: National Weather Service Missoula, MT |
Updated: 2:30 pm MDT Jul 10, 2025 |
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Tonight
 Mostly Clear then Patchy Fog
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Friday
 Patchy Fog then Mostly Sunny
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Friday Night
 Partly Cloudy
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Saturday
 Sunny
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Saturday Night
 Clear
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Sunday
 Hot
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Sunday Night
 Mostly Clear
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Monday
 Sunny then Slight Chance Showers
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Monday Night
 Slight Chance T-storms then Slight Chance Showers
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Lo 47 °F |
Hi 89 °F |
Lo 51 °F |
Hi 93 °F |
Lo 55 °F |
Hi 96 °F |
Lo 58 °F |
Hi 90 °F |
Lo 49 °F |
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Tonight
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Patchy fog after 5am. Otherwise, mostly clear, with a low around 47. Calm wind. |
Friday
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Patchy fog before 8am. Otherwise, sunny, with a high near 89. Calm wind. |
Friday Night
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Partly cloudy, with a low around 51. Calm wind. |
Saturday
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Sunny, with a high near 93. Calm wind becoming west southwest around 6 mph in the afternoon. |
Saturday Night
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Clear, with a low around 55. West wind around 6 mph becoming calm in the evening. |
Sunday
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Sunny and hot, with a high near 96. |
Sunday Night
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Mostly clear, with a low around 58. |
Monday
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A slight chance of showers after noon. Mostly sunny, with a high near 90. |
Monday Night
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A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 49. |
Tuesday
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Partly sunny, with a high near 80. |
Tuesday Night
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Mostly clear, with a low around 46. |
Wednesday
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Patchy fog. Otherwise, sunny, with a high near 89. |
Wednesday Night
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Clear, with a low around 50. |
Thursday
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Sunny, with a high near 93. |
Forecast from NOAA-NWS
for Libby MT.
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Weather Forecast Discussion
940
FXUS65 KMSO 101944
AFDMSO
Area Forecast Discussion
National Weather Service Missoula MT
144 PM MDT Thu Jul 10 2025
.DISCUSSION...
KEY MESSAGES:
- Warming trend Friday into the weekend, with moderate heat risk
impacts across low elevations of central Idaho.
- Next system arrives Monday into Tuesday, with potential for
backdoor cold front, northeast winds, and recreation impacts.
GOES Satellite and radar observations this afternoon show a upper
level disturbance moving across southern Alberta, with scattered
showers across northern portions of Lincoln and Flathead Counties.
Blustery westerly winds have began to surface, with gusts
expected to reach 25-30 mph across valley areas through this
evening across western Montana. Higher gusts near 40 mph have been
observed across high elevations along the divide in northwest
Montana, including Logan Pass in Glacier Park. Showers will
continue through this evening across northwest Montana, focusing
across Glacier Park, with enough moisture and instability being
present for a couple isolated thunderstorms.
A ridge of high pressure will amplify along the Pacific Northwest
coast Friday into the weekend. This will place the Northern
Rockies under a warm and dry west-northwest flow pattern.
Confidence is high for rising temperatures through the weekend,
with highs reaching into the upper-90s to low-100s across lower
elevations of central Idaho. These temperatures will stretch over
the weekend, leading to a moderate risk of heat impacts.
Temperatures will also run 10-15F above normal across western
Montana, with Sunday being the warmest day of the upcoming week.
Ensemble models continue to suggest a breakdown of the ridge
Monday into Tuesday next week as a trough drops southeastward from
British Columbia. Half of ensemble clusters bring a strong
backdoor cold front southward from Canada across the divide
Monday evening into Tuesday morning, with north-northeast winds
developing across western Montana. Guidance has trended towards
this solution, with previous ensemble runs showing a 20% chance
for this solution 12-24 hrs ago. Precipitation will generally
focus along the divide in northwest Montana under this scenario,
with probabilities for >0.10" of precipitation peaking at 50-60%
across Flathead County and the divide. The bottom line is those
with plans across the higher elevations and in Glacier Park
should monitor the forecast closely given the potential for
widespread precipitation, much colder temperatures, and north-
northeast winds making for adverse backcountry conditions for this
time of year. Furthermore, choppy lake conditions across Flathead
Lake would be a concern if this backdoor cold front solution
comes to fruition. We will monitor this system closely in the
coming days.
&&
.AVIATION...GOES Satellite imagery shows a cumulus field along and
north of the I-90 corridor associated with a passing disturbance
along the US-Canadian border. Scattered showers are seen on
regional radar imagery across Lincoln and Flathead County as of
10/1900Z. This activity will continue into the evening, with the
risk of lightning from isolated thunderstorms focusing east of
KGPI over Glacier National Park and the divide. Blustery westerly
winds of 20-25kts will continue through 11/0200-0400Z for valley
areas as this disturbance passes. Skies will clear overnight as
high pressure begins to build into the region.
&&
.MSO WATCHES/WARNINGS/ADVISORIES...
MT...None.
ID...None.
&&
$$
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