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Deer Lodge, Montana 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Deer Lodge MT
National Weather Service Forecast for: Deer Lodge MT
Issued by: National Weather Service Missoula, MT
Updated: 3:41 am MST Nov 21, 2024
 
Overnight

Overnight: A chance of rain and snow.  Snow level 4900 feet. Mostly cloudy, with a steady temperature around 29. South wind around 9 mph.  Chance of precipitation is 30%. Little or no snow accumulation expected.
Chance
Rain/Snow

Thursday

Thursday: A chance of rain and snow before 9am, then a chance of rain.  Snow level 5300 feet rising to 7300 feet in the afternoon. Mostly cloudy, with a high near 45. South wind around 9 mph.  Chance of precipitation is 50%. Little or no snow accumulation expected.
Chance
Rain/Snow
then Chance
Rain
Thursday
Night
Thursday Night: A chance of rain before 2am, then snow likely, possibly mixed with rain.  Mostly cloudy, with a low around 29. South wind 6 to 8 mph.  Chance of precipitation is 60%. Little or no snow accumulation expected.
Chance Rain
then
Rain/Snow
Likely
Friday

Friday: Rain and snow likely, becoming all rain after 7am.  Mostly cloudy, with a high near 48. South wind 6 to 8 mph.  Chance of precipitation is 70%. Little or no snow accumulation expected.
Rain/Snow
Likely then
Chance Rain
Friday
Night
Friday Night: A 50 percent chance of rain, mainly after 11pm.  Mostly cloudy, with a low around 30. South wind 7 to 10 mph, with gusts as high as 18 mph.
Chance Rain

Saturday

Saturday: Rain before 2pm, then snow, possibly mixed with rain.  Snow level 6300 feet lowering to 5400 feet in the afternoon . High near 43. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Rain then
Rain/Snow

Saturday
Night
Saturday Night: A chance of rain and snow before 8pm, then a chance of snow.  Mostly cloudy, with a low around 15. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Chance
Rain/Snow
then Chance
Snow
Sunday

Sunday: A slight chance of snow before 11am.  Partly sunny, with a high near 32.
Slight Chance
Snow then
Partly Sunny
Sunday
Night
Sunday Night: Partly cloudy, with a low around 9.
Partly Cloudy

Lo 29 °F Hi 45 °F Lo 29 °F Hi 48 °F Lo 30 °F Hi 43 °F Lo 15 °F Hi 32 °F Lo 9 °F

 

Overnight
 
A chance of rain and snow. Snow level 4900 feet. Mostly cloudy, with a steady temperature around 29. South wind around 9 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Thursday
 
A chance of rain and snow before 9am, then a chance of rain. Snow level 5300 feet rising to 7300 feet in the afternoon. Mostly cloudy, with a high near 45. South wind around 9 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Thursday Night
 
A chance of rain before 2am, then snow likely, possibly mixed with rain. Mostly cloudy, with a low around 29. South wind 6 to 8 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Friday
 
Rain and snow likely, becoming all rain after 7am. Mostly cloudy, with a high near 48. South wind 6 to 8 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Friday Night
 
A 50 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 30. South wind 7 to 10 mph, with gusts as high as 18 mph.
Saturday
 
Rain before 2pm, then snow, possibly mixed with rain. Snow level 6300 feet lowering to 5400 feet in the afternoon . High near 43. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Saturday Night
 
A chance of rain and snow before 8pm, then a chance of snow. Mostly cloudy, with a low around 15. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Sunday
 
A slight chance of snow before 11am. Partly sunny, with a high near 32.
Sunday Night
 
Partly cloudy, with a low around 9.
Monday
 
Partly sunny, with a high near 35.
Monday Night
 
Mostly cloudy, with a low around 13.
Tuesday
 
Partly sunny, with a high near 36.
Tuesday Night
 
Mostly cloudy, with a low around 13.
Wednesday
 
Mostly cloudy, with a high near 34.

 

Forecast from NOAA-NWS for Deer Lodge MT.

Weather Forecast Discussion
721
FXUS65 KMSO 202016
AFDMSO

Area Forecast Discussion
National Weather Service Missoula MT
116 PM MST Wed Nov 20 2024

.DISCUSSION...


KEY MESSAGES:

-  An atmospheric river will bring ample moisture to the mountains
   of central Idaho and northwest Montana today through Saturday.

- Uncertainty regarding snow levels continues to plague the
  forecast

- Slight chance for freezing rain in the Flathead Valley overnight
  tonight

If you`ve been following along over the last few days, not a lot
has changed in the forecast going into the weekend. A well-
developed mid latitude cyclone, obvious on visible satellite
imagery, continues to spin off the West Coast about in line with
the Canadian border. The counter clockwise rotation of the low
will send moisture onshore south of the low pressure center. This
plume of moisture, also known as an atmospheric river, will bring
precipitation into the Northern Rockies. In the near term,
precipitation will be in the form of snow as sub-freezing
temperatures persist. Forecast problem #1 is when, and to what
extent, will snow persist before turning to rain? Dew point
temperatures this afternoon would suggest that snow will be able
to hold on long enough to produce a trace to one inch as low as
some valley floors in northwest MT such as Kalispell. If cold air
can hold on overnight tonight in the Flathead Valley and
precipitation type transitions to rain, there will be a chance for
freezing rain overnight (Forecast problem #2). Forecast
confidence is low in freezing rain with chances for freezing rain
about 20 percent for the Flathead and western Mission valleys, as
well as Hwy 2 south of Libby.

In addition to the strong circulation, satellite imagery also
shows the plume of moisture extending from the Northern Rockies
all the way to the Pacific Ocean. Total precipitation amounts
with this event will be impressive, especially across northwest
Montana and the Clearwater range of Idaho. By Saturday morning,
model ensemble means are showing 2-4 inches of liquid
precipitation along the Idaho-Montana border and mountains of the
Cabinet, Clearwater, Swan, Whitefish, Flathead, Mission, northern
Bitterroot ranges, as well as the Continental Divide in Glacier
Park. Even with rising snow levels, this amount of moisture could
translate into multiple feet of snow for the higher terrain along
the Divide where snow levels will top out at about 5000 feet
before descending again. Elsewhere, snow levels will rise even to
the higher peaks.

The upper level flow becomes westerly to northwesterly by Sunday.
This flow pattern will be conducive to weak disturbances moving
through the Northern Rockies. The latest model runs are only
showing a 10-15% chance for arctic air making its way over the
Continental Divide on Sunday. While ensemble solutions looking
into Thanksgiving week are not exactly in sync, all point towards
better chances that cool, wet weather will continue.



&&

.AVIATION...The atmospheric river will continue to send moisture
into the Northern Rockies today causing widespread precipitation
along with lowering ceilings and temporarily decreased
visibility. Snow levels will stay low enough into this evening for
snow at KGPI. The snow levels will be steadily rising over the
next 24-48 hours. Mountains and passes are expected to be obscured
the majority of the time.

&&

.MSO WATCHES/WARNINGS/ADVISORIES...
MT...Winter Weather Advisory until 11 AM MST Thursday for Lower Clark
     Fork Region...West Glacier Region.


ID...None.
&&

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






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