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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: 3:41 am MST Nov 21, 2024 |
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Overnight
Rain/Snow and
Patchy Fog
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Thursday
Rain/Snow and
Areas Fog
then Rain and
Areas Fog
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Thursday
Night
Rain and
Areas Fog
then
Rain/Snow
Likely and
Patchy Fog
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Friday
Rain and
Patchy Fog
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Friday
Night
Rain and
Patchy Fog
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Saturday
Rain and
Patchy Fog
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Saturday
Night
Rain/Snow
Likely and
Patchy Fog
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Sunday
Snow Likely
and Patchy
Fog then
Chance
Rain/Snow
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Sunday
Night
Chance
Rain/Snow and
Patchy Fog
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| Lo 26 °F |
Hi 42 °F |
Lo 31 °F |
Hi 42 °F |
Lo 31 °F |
Hi 42 °F |
Lo 21 °F |
Hi 36 °F |
Lo 17 °F |
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Winter Weather Advisory
Overnight
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Rain and snow. Patchy fog. Low around 26. Calm wind. Chance of precipitation is 90%. Total nighttime snow accumulation of less than a half inch possible. |
Thursday
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Rain and snow, becoming all rain after 10am. Areas of fog before 2pm. High near 42. Calm wind. Chance of precipitation is 90%. Little or no snow accumulation expected. |
Thursday Night
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Rain before 3am, then rain and snow likely between 3am and 4am, then rain likely after 4am. Areas of fog. Low around 31. Calm wind. Chance of precipitation is 90%. Little or no snow accumulation expected. |
Friday
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Rain. Patchy fog before 1pm. High near 42. Calm wind. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible. |
Friday Night
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Rain. Patchy fog. Low around 31. Calm wind. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible. |
Saturday
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Rain. Patchy fog before 1pm. High near 42. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible. |
Saturday Night
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Rain likely before 8pm, then rain and snow likely between 8pm and 2am, then snow likely after 2am. Patchy fog after 8pm. Snow level 3300 feet lowering to 2200 feet after midnight . Otherwise, mostly cloudy, with a low around 21. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible. |
Sunday
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Snow likely before 5pm, then a chance of rain and snow. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 36. |
Sunday Night
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A chance of rain and snow before 8pm, then a chance of snow. Patchy fog before midnight, then patchy fog after 1am. Otherwise, mostly cloudy, with a low around 17. |
Monday
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A chance of snow. Patchy fog before 11am. Otherwise, partly sunny, with a high near 36. |
Monday Night
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A chance of rain and snow. Patchy fog. Otherwise, mostly cloudy, with a low around 20. |
Tuesday
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A chance of rain and snow. Areas of fog. Otherwise, mostly cloudy, with a high near 38. |
Tuesday Night
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A chance of rain and snow. Patchy fog. Otherwise, mostly cloudy, with a low around 20. |
Wednesday
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A chance of snow. Areas of fog. Otherwise, mostly cloudy, with a high near 37. |
Forecast from NOAA-NWS
for Libby MT.
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Weather Forecast Discussion
309
FXUS65 KMSO 211056
AFDMSO
Area Forecast Discussion
National Weather Service Missoula MT
356 AM MST Thu Nov 21 2024
.DISCUSSION...
KEY MESSAGES:
- An atmospheric river will bring ample moisture to the mountains
of central Idaho and northwest Montana today through Saturday.
- Slight chance for pockets of freezing rain in northwest Montana
this morning.
- Arctic air lingering along the Continental Divide this weekend.
Moisture from the atmospheric river has made its way into the
Northern Rockies last night causing widespread precipitation.
Currently snow levels are low enough across northwest Montana that
all locations have been receiving snow so far. A few higher
elevation observations across northwest Montana are starting to
creep above freezing as warm air makes its way into the region.
This warming aloft could create pockets of freezing rain for a
short period of time this morning. The remainder of the region
appears to have a fairly well mix lower atmosphere that the
precipitation will be rain or gradually changing over to rain as
the snow levels rise to around 6000 feet.
The atmospheric river will be fairly consistent through at least
Saturday with pulses of heavier precipitation, such as Friday
morning then again on Saturday. Saturday`s pulse will be
associated with a decent amount of energy breaking away from the
large low pressure system sitting off the Pacific Northwest coast.
That piece of energy has the potential to cause a secondary low
pressure system that will track along the Canadian border. The
strength and path of this disturbance will be the deciding factor
on how much arctic air will be able to be pushed over the
Continental Divide in around Glacier National Park. The bulk of
the models, around 80%, still show the very cold air staying east
of the Divide.
A low amplitude transitory ridge of high pressure slides over the
Northern Rockies Sunday into Monday causing a decrease in the
shower activity. Then the large low pressure system off the coast
is anticipated to push to the southeast into the Great Basin
region by mid next week. The path of this low will put the
Northern Rockies in a northwesterly upper level flow pattern for
Thanksgiving into the following weekend. This flow pattern
meanings cooler than average temperatures with the potential for
periods of light snow showers.
&&
.AVIATION...The atmospheric river will continue to push into the
Northern Rockies for the next 24 to 48 hours. KGPI, KSMN and KBTM
could still experience periods of light snow this morning which
will reduce visibilities. Then the snow levels will rise high
enough by this afternoon that the precipitation type will be rain.
Mountain and passes obscurations will be common throughout the
period.
&&
.MSO WATCHES/WARNINGS/ADVISORIES...
MT...Winter Weather Advisory until 11 AM MST this morning for
Flathead/Mission Valleys...Kootenai/Cabinet Region...Lower
Clark Fork Region...West Glacier Region.
ID...None.
&&
$$
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