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Porters Corner, Montana Weather Forecast
Porters Corner, Montana Weather
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Weather Forecast for Porters Corner, Montana : Granite County
Issued: 1:01 pm MST Dec 17, 2025 Latitude: 46.2518692 Longitude: -113.3320077 View on Google Maps

MouseOver for Detail Forecast
Tonight Thursday Friday Saturday Sunday Monday Tuesday Wednesday
Mostly Cloudy on Tonight 80% chance of snow on Thursday 100% chance of rain & snow on Friday 30% chance of snow on Saturday 20% chance of snow on Sunday 20% chance of rain & snow on Monday 10% chance of snow on Tuesday 20% chance of snow on Wednesday
Low: 20°F High: 39°F High: 41°F High: 30°F High: 40°F High: 40°F High: 40°F High: 41°F
Low: 31°F Low: 18°F Low: 17°F Low: 26°F Low: 21°F Low: 24°F  
Mostly Cloudy Snow Rain & Snow Snow Snow Rain & Snow Snow Snow
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Current Conditions at
BUTTE - (KBTM)
27°
Feels like 16°F
Mostly Cloudy
as of 8:53 PM MST
Rel. Humidity: 53%
Dew Point: 12°F
Visibility: 10 Miles
Pressure: 29.92 in.
Flight Rule: VFR
Wind Data
10 MPH
320° Northwest
Cloud Level(s): Broken at 5500ft, Broken at 7000ft
Current Conditions at
MISSOULA - (KMSO)
34°
Feels like 24°F
Cloudy
Light Snow
as of 8:53 PM MST
Rel. Humidity: 80%
Dew Point: 28°F
Visibility: 6 Miles
Pressure: 30.01 in.
Flight Rule: VFR
Wind Data
13 MPH
200° South
Cloud Level(s): Few at 3400ft, Broken at 5000ft, Solid Overcast at 7500ft
Current Conditions at
DILLON - (KDLN)
30°
Feels like 17°F
Clear
as of 8:53 PM MST
Rel. Humidity: 39%
Dew Point: 9°F
Visibility: 10 Miles
Pressure: 29.94 in.
Flight Rule: VFR
Wind Data
22 MPH
Gust: 35 MPH
260° West
Cloud Level(s): Clear
Mostly Cloudy on Tonight Tonight... Mostly cloudy, with a low around 20. South southwest wind 7 to 15 mph, with gusts as high as 26 mph.
80% chance of snow Thursday Thursday... Snow, mainly after 3pm. High near 39. South southwest wind 6 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
100% chance of rain & snow Thursday Night Thursday Night... Rain and snow before 11pm, then rain between 11pm and 2am, then rain and snow after 2am. Snow level 5500 feet rising to 6600 feet. Low around 31. South southwest wind 14 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
100% chance of rain & snow Friday Friday... Rain and snow, becoming all snow after 8am. High near 41. West wind 13 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.
40% chance of snow Friday Night Friday Night... A 40 percent chance of snow, mainly before 11pm. Mostly cloudy, with a low around 18. West southwest wind around 10 mph, with gusts as high as 20 mph. New snow accumulation of less than a half inch possible.
30% chance of snow Saturday Saturday... A 30 percent chance of snow, mainly after 11am. Partly sunny, with a high near 30. Little or no snow accumulation expected.
Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 17.
20% chance of snow Sunday Sunday... A chance of snow after 11am. Partly sunny, with a high near 40.
20% chance of rain & snow Sunday Night Sunday Night... A chance of rain and snow. Snow level 5500 feet. Mostly cloudy, with a low around 26.
20% chance of rain & snow Monday Monday... A chance of rain and snow before 2pm, then a chance of snow. Snow level 5400 feet. Mostly cloudy, with a high near 40.
10% chance of snow Monday Night Monday Night... A slight chance of snow. Mostly cloudy, with a low around 21.
10% chance of snow Tuesday Tuesday... A slight chance of snow. Partly sunny, with a high near 40.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 24.
20% chance of snow Wednesday Wednesday... A chance of snow. Partly sunny, with a high near 41.
Current Radar Image


Sun Almanac for Porters Corner, Montana
Sunrise: 08:12 AM
Sunset: 4:49 PM
Civil Sunrise:07:37 AM
Civil Sunset: 5:23 PM
Nautical Sunrise: 06:59 AM
Nautical Sunset: 6:02 PM
Astro Sunrise: 06:22 AM
Astro Sunset: 6:38 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.