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Columbia Falls, Montana 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Columbia Falls MT
National Weather Service Forecast for: Columbia Falls MT
Issued by: National Weather Service Missoula, MT
Updated: 2:30 pm MDT Jun 10, 2025
 
Tonight

Tonight: A 20 percent chance of rain before midnight.  Widespread haze after 5am. Partly cloudy, with a low around 54. Light and variable wind.
Slight Chance
Rain then
Haze
Wednesday

Wednesday: A chance of rain between noon and 3pm, then a chance of showers and thunderstorms after 3pm.  Widespread haze before 10am. Increasing clouds, with a high near 83. Calm wind becoming south around 6 mph in the afternoon.  Chance of precipitation is 30%.
Haze then
Chance
T-storms
Wednesday
Night
Wednesday Night: A chance of showers and thunderstorms before 9pm, then a chance of rain after 9pm.  Mostly cloudy, with a low around 52. Northeast wind around 6 mph becoming light and variable  after midnight.  Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms then
Chance Rain
Thursday

Thursday: A chance of rain before noon, then a chance of showers and thunderstorms after noon.  Partly sunny, with a high near 79. Calm wind becoming south southwest around 6 mph in the afternoon.  Chance of precipitation is 50%.
Chance
Showers
Thursday
Night
Thursday Night: A 30 percent chance of rain.  Mostly cloudy, with a low around 51. Southwest wind around 6 mph becoming calm  in the evening.
Chance Rain

Friday

Friday: A slight chance of rain, then a chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 78. Chance of precipitation is 30%.
Chance
Showers
Friday
Night
Friday Night: A 20 percent chance of rain before midnight.  Partly cloudy, with a low around 49.
Slight Chance
Rain then
Partly Cloudy
Saturday

Saturday: A slight chance of rain.  Mostly sunny, with a high near 77.
Slight Chance
Rain
Saturday
Night
Saturday Night: Partly cloudy, with a low around 48.
Partly Cloudy

Lo 54 °F Hi 83 °F Lo 52 °F Hi 79 °F Lo 51 °F Hi 78 °F Lo 49 °F Hi 77 °F Lo 48 °F

 

Tonight
 
A 20 percent chance of rain before midnight. Widespread haze after 5am. Partly cloudy, with a low around 54. Light and variable wind.
Wednesday
 
A chance of rain between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Widespread haze before 10am. Increasing clouds, with a high near 83. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 30%.
Wednesday Night
 
A chance of showers and thunderstorms before 9pm, then a chance of rain after 9pm. Mostly cloudy, with a low around 52. Northeast wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
 
A chance of rain before noon, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 79. Calm wind becoming south southwest around 6 mph in the afternoon. Chance of precipitation is 50%.
Thursday Night
 
A 30 percent chance of rain. Mostly cloudy, with a low around 51. Southwest wind around 6 mph becoming calm in the evening.
Friday
 
A slight chance of rain, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 78. Chance of precipitation is 30%.
Friday Night
 
A 20 percent chance of rain before midnight. Partly cloudy, with a low around 49.
Saturday
 
A slight chance of rain. Mostly sunny, with a high near 77.
Saturday Night
 
Partly cloudy, with a low around 48.
Sunday
 
A slight chance of rain after noon. Mostly sunny, with a high near 78.
Sunday Night
 
A slight chance of rain. Partly cloudy, with a low around 47.
Monday
 
A chance of rain and thunderstorms. Mostly sunny, with a high near 77.
Monday Night
 
A chance of rain and thunderstorms. Mostly cloudy, with a low around 47.
Tuesday
 
A chance of rain. Partly sunny, with a high near 77.

 

Forecast from NOAA-NWS for Columbia Falls MT.

Weather Forecast Discussion
136
FXUS65 KMSO 101959
AFDMSO

Area Forecast Discussion
National Weather Service Missoula MT
159 PM MDT Tue Jun 10 2025

.DISCUSSION...

KEY MESSAGES:

-  Near-record daytime high temperatures today.

-  A few strong storms this afternoon and again Wednesday
   afternoon and evening.

-  Cooler late this week with daily afternoon showers and
   thunderstorms.

Well above-normal high temperatures are expected again today, a
few high temperature records may be tied or set.

An area of scattered thunderstorms in northwest MT and a second
area from Lemhi County ID into southwest MT, could produce a
strong storm or two. The main threat today will be gusty outflow
winds up to 40 mph.

Wednesday may start with a brief shower or crack of thunder from
Lemhi County ID into southwest MT as a weak system moves through
around daybreak. This system will set the stage for the rest of
the day. If clouds remain in this area, it will inhibit afternoon
thunderstorms which could become severe. A lack of clouds will
allow for afternoon heating and the potential for strong to severe
thunderstorms. Similar to today the main threat will be gusty
outflow winds, which if they attain severe status could gust 50 to
60+ mph. Moisture from east of the divide will also move into our
region allowing for brief but heavy showers in this same area.
Currently, the concern for flash flooding is low due to mid-level
winds that will likely rapidly move cells off to the northeast.
Keep a watch on the forecast in case these winds fail to develop
or training of multiple cells over the same location happens.

Thursday and Friday the region remains under southwest flow with
temperatures still 10 degrees above normal and afternoon
thunderstorms. Friday may end up being the best chance for region
wide thunderstorms as a short wave ejects off the broader Pacific
trough.

Long term there is a hint of a precipitation maker around the
17th. Thirty percent of the models depict a deeper trough with
widespread precipitation, mainly from the European Community
Ensemble Forecast System. The remainder of the models depict
westerly flow which typically is a drier flow at this time of
year. More to come on this system.

&&

.AVIATION...Hot temperatures with widely scattered showers and
thunderstorms this evening. Gusty winds to 40 mph with small hail
and briefly heavy rain are likely impacts from these storms.
Otherwise expect continued west-southwest flow at ridgetops in the
10-20 knot range. A weak disturbance will produce morning showers
on Wednesday south of I-90 followed by an increased chance for
afternoon showers and storms between 11/1900Z and 11/0100z that
are more likely to produce erratic gusts up to 60 mph, small
hail, and isolated heavy rainfall near terminals KSMN, KBTM, and
to a lesser extent KMSO and KHRF.

&&

.MSO WATCHES/WARNINGS/ADVISORIES...
MT...None.
ID...Heat Advisory until 9 PM PDT this evening for Lower Hells
     Canyon/Salmon River Region...Orofino/Grangeville Region.

&&

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






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