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Porcupine, Montana Weather Forecast
Porcupine, Montana Weather
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Weather Forecast for Porcupine, Montana : Rosebud County
Issued: 10:10 am MST Dec 17, 2025 Latitude: 46.2897172 Longitude: -106.6603121 View on Google Maps

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This Afternoon Tonight Thursday Friday Saturday Sunday Monday Tuesday
60% chance of rain on This Afternoon 20% chance of snow on Tonight Increasing Clouds on Thursday 40% chance of rain & snow on Friday Mostly Sunny on Saturday Mostly Sunny on Sunday 20% chance of rain & snow on Monday Partly Sunny on Tuesday
High: 41 °F Low: 15°F High: 35°F High: 48 °F High: 35°F High: 38°F High: 41°F High: 39°F
Low: 41 °F Low: 21°F Low: 21°F Low: 24°F Low: 24°F  
Rain Snow Increasing Clouds Rain & Snow Mostly Sunny Mostly Sunny Rain & Snow Partly Sunny
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Current Conditions at
MILES CITY - (KMLS)
41°
Cloudy
as of 11:53 AM MST
Rel. Humidity: 65%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 29.10 in.
Flight Rule: VFR
Wind Data
7 MPH
150° Southeast
Cloud Level(s): Solid Overcast at 9500ft
Current Conditions at
JORDAN - (KJDN)
46°
Feels like 40°F
Cloudy
as of 11:48 AM MST
Rel. Humidity: 75%
Dew Point: 39°F
Pressure: 29.11 in.
Wind Data
15 MPH
250° West
Current Conditions at
BILLINGS - (KBIL)
48°
Feels like 37°F
Cloudy
Squalls
as of 12:02 PM MST
Rel. Humidity: 66%
Dew Point: 37°F
Visibility: 10 Miles
Pressure: 29.24 in.
Flight Rule: VFR
Wind Data
52 MPH
Gust: 70 MPH
280° West
Cloud Level(s): Scattered at 5500ft, Broken at 7000ft, Solid Overcast at 10000ft
Current Conditions at
GLENDIVE - (KGDV)
41°
Cloudy
Light Rain
as of 11:56 AM MST
Rel. Humidity: 75%
Dew Point: 34°F
Visibility: 10 Miles
Pressure: 29.13 in.
Flight Rule: VFR
Wind Data
6 MPH
260° West
Cloud Level(s): Broken at 6000ft, Solid Overcast at 8000ft
60% chance of rain This Afternoon This Afternoon... Showers likely, mainly before 1pm. Mostly cloudy early, then becoming sunny, with a temperature falling to around 41 by 5pm. West wind 25 to 30 mph increasing to 36 to 41 mph. Winds could gust as high as 55 mph. Chance of precipitation is 60%.
20% chance of snow Tonight Tonight... A 20 percent chance of snow showers between 11pm and 4am. Mostly cloudy, with a low around 15. Northwest wind 34 to 44 mph decreasing to 23 to 33 mph after midnight. Winds could gust as high as 60 mph.
Increasing Clouds on Thursday Thursday... Increasing clouds, with a high near 35. Northwest wind 5 to 10 mph becoming south in the afternoon.
20% chance of rain & snow Thursday Night Thursday Night... A slight chance of rain and snow between 11pm and 2am, then a slight chance of rain after 2am. Cloudy, with a temperature rising to around 41 by 5am. South wind 7 to 13 mph. Chance of precipitation is 20%.
40% chance of rain & snow Friday Friday... A chance of rain after 11am, mixing with snow after 2pm. Mostly cloudy, with a temperature rising to near 48 by 11am, then falling to around 38 during the remainder of the day. Southwest wind 11 to 15 mph becoming west northwest in the afternoon. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
70% chance of snow Friday Night Friday Night... Snow likely, mainly before 11pm. Mostly cloudy, with a low around 21. West wind 5 to 7 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 35. West wind 5 to 7 mph.
Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 21. West southwest wind around 6 mph.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 38. Southwest wind around 6 mph becoming southeast in the afternoon.
Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 24. Southeast wind around 5 mph.
20% chance of rain & snow Monday Monday... A slight chance of rain and snow. Mostly cloudy, with a high near 41. South wind 5 to 7 mph becoming northwest in the afternoon. Chance of precipitation is 20%.
20% chance of rain & snow Monday Night Monday Night... A slight chance of rain and snow. Mostly cloudy, with a low around 24. North northwest wind around 6 mph becoming light and variable in the evening. Chance of precipitation is 20%.
Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 39. Light and variable wind becoming east southeast around 5 mph in the afternoon.
Current Radar Image


Sun Almanac for Porcupine, Montana
Sunrise: 07:45 AM
Sunset: 4:21 PM
Civil Sunrise:07:10 AM
Civil Sunset: 4:56 PM
Nautical Sunrise: 06:32 AM
Nautical Sunset: 5:34 PM
Astro Sunrise: 05:55 AM
Astro Sunset: 6:11 PM
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