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Hamilton, Montana 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Hamilton MT
National Weather Service Forecast for: Hamilton MT
Issued by: National Weather Service Missoula, MT
Updated: 2:40 pm MST Nov 22, 2024
 
Overnight

Overnight: Rain likely.  Patchy fog.  Otherwise, cloudy, with a low around 34. South wind around 9 mph.  Chance of precipitation is 70%.
Rain Likely
and Patchy
Fog
Saturday

Saturday: Rain.  Patchy fog before 10am. High near 44. South wind 6 to 13 mph.  Chance of precipitation is 100%.
Rain and
Patchy Fog
then Rain
Likely
Saturday
Night
Saturday Night: Rain and snow likely, becoming all snow after 9pm.  Mostly cloudy, with a low around 22. South wind 5 to 7 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Rain/Snow
Likely then
Chance Snow
Sunday

Sunday: A 20 percent chance of snow before 11am.  Mostly sunny, with a high near 39. South southwest wind 3 to 6 mph.
Slight Chance
Snow then
Mostly Sunny
Sunday
Night
Sunday Night: Partly cloudy, with a low around 16. South wind 3 to 6 mph.
Partly Cloudy

Monday

Monday: A 10 percent chance of rain after 5pm.  Partly sunny, with a high near 38.
Partly Sunny
then Slight
Chance Rain
Monday
Night
Monday Night: A slight chance of rain and snow before 8pm, then a slight chance of snow.  Mostly cloudy, with a low around 20. Chance of precipitation is 20%.
Slight Chance
Rain/Snow
then Slight
Chance Snow
Tuesday

Tuesday: A slight chance of snow before 2pm, then a slight chance of rain and snow.  Mostly cloudy, with a high near 39.
Slight Chance
Snow then
Slight Chance
Rain/Snow
Tuesday
Night
Tuesday Night: Mostly cloudy, with a low around 20.
Mostly Cloudy

Lo 34 °F Hi 44 °F Lo 22 °F Hi 39 °F Lo 16 °F Hi 38 °F Lo 20 °F Hi 39 °F Lo 20 °F

 

Overnight
 
Rain likely. Patchy fog. Otherwise, cloudy, with a low around 34. South wind around 9 mph. Chance of precipitation is 70%.
Saturday
 
Rain. Patchy fog before 10am. High near 44. South wind 6 to 13 mph. Chance of precipitation is 100%.
Saturday Night
 
Rain and snow likely, becoming all snow after 9pm. Mostly cloudy, with a low around 22. South wind 5 to 7 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Sunday
 
A 20 percent chance of snow before 11am. Mostly sunny, with a high near 39. South southwest wind 3 to 6 mph.
Sunday Night
 
Partly cloudy, with a low around 16. South wind 3 to 6 mph.
Monday
 
A 10 percent chance of rain after 5pm. Partly sunny, with a high near 38.
Monday Night
 
A slight chance of rain and snow before 8pm, then a slight chance of snow. Mostly cloudy, with a low around 20. Chance of precipitation is 20%.
Tuesday
 
A slight chance of snow before 2pm, then a slight chance of rain and snow. Mostly cloudy, with a high near 39.
Tuesday Night
 
Mostly cloudy, with a low around 20.
Wednesday
 
A slight chance of snow after 11am. Mostly cloudy, with a high near 37.
Wednesday Night
 
Mostly cloudy, with a low around 16.
Thanksgiving Day
 
Partly sunny, with a high near 36.
Thursday Night
 
Mostly cloudy, with a low around 15.
Friday
 
Partly sunny, with a high near 36.

 

Forecast from NOAA-NWS for Hamilton MT.

Weather Forecast Discussion
048
FXUS65 KMSO 222034
AFDMSO

Area Forecast Discussion
National Weather Service Missoula MT
134 PM MST Fri Nov 22 2024

.DISCUSSION...

KEY MESSAGES:

-  Mixed precipitation in northwest Montana, valley rain and
   mountain snow elsewhere through Friday night.

-  Falling snow levels on Saturday creating winter driving
   conditions.


Surface observations continue to show enough cool air in parts of
northwest Montana to sustain snowfall despite the arrival of
warmer air. Near the Continental Divide, cold air has pushed west
over Marias Pass through Essex, becoming shallow toward West
Glacier. The depth and strength of this cold air remain uncertain,
with model guidance suggesting a wide range of temperature
scenarios from Kalispell north and east through Saturday morning.

Snowfall is expanding across much of Lincoln and Flathead
counties. However, with warmer air moving in aloft and uncertainty
about the depth of the cold air, there is a 20-40% chance of
freezing rain by noon Saturday. This wintry mix has prompted the
issuance of winter weather advisories. For Kalispell and the
Flathead Valley, rain is expected to persist until Saturday
afternoon, so an advisory has not been issued at this time.
Elsewhere, with high snow levels expected, no additional winter
weather advisories are anticipated.

Snow levels are expected to lower on Saturday, particularly in
the afternoon, following the passage of a cold front from the
west. Precipitation will likely become more scattered and showery
behind the front.

A shortwave trough passing Saturday night will bring another
chance for snow, with the primary focus shifting to north-central
Idaho, Lemhi County, and southwest Montana.

Looking ahead to next week, cooler and showery conditions are
expected. However, no significant weather systems currently stand
out.

&&

.AVIATION...Moisture from an atmospheric river will continue to
provide periods of precipitation (mostly rain for valleys).
Lowered ceilings and visibility reductions will be common with fog
development potential between precipitation episodes. There is
decent consensus on a brief break in widespread precipitation this
evening followed by another extended period of rain by early
Saturday at KGPI, KMSO and KHRF. Scattered showers will impact KBTM
and KSMN rather than the persistent rainfall. One wild card
overnight/early Saturday, there is a 20-30% probability of
shallow cold air from the east, turning rain over to snow or
light freezing rain at KGPI.



&&

.MSO WATCHES/WARNINGS/ADVISORIES...
MT...Winter Weather Advisory until noon MST Saturday for
     Kootenai/Cabinet Region.

     Winter Weather Advisory until 5 PM MST Saturday for West Glacier
     Region.

ID...None.
&&

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






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