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Arnold, Montana Weather Forecast
Arnold, Montana Weather
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Weather Forecast for Arnold, Montana : Gallatin County
Issued: 9:43 pm MST Dec 17, 2025 Latitude: 45.7143729 Longitude: -111.3549603 View on Google Maps

MouseOver for Detail Forecast
Tonight Thursday Friday Saturday Sunday Monday Tuesday Wednesday
Mostly Cloudy on Tonight 20% chance of snow on Thursday 80% chance of rain & snow on Friday Sunny on Saturday Partly Sunny on Sunday 20% chance of rain & snow on Monday 10% chance of rain & snow on Tuesday 20% chance of rain & snow on Wednesday
Low: 25°F High: 43°F High: 51°F High: 37°F High: 41°F High: 46°F High: 42°F High: 46°F
Low: 38 °F Low: 20°F Low: 20°F Low: 31°F Low: 26°F Low: 29°F  
Mostly Cloudy Snow Rain & Snow Sunny Partly Sunny Rain & Snow Rain & Snow Rain & Snow
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Current Conditions at
BOZEMAN - (KBZN)
34°
Feels like 23°F
Cloudy
as of 8:56 PM MST
Rel. Humidity: 37%
Dew Point: 10°F
Visibility: 10 Miles
Pressure: 29.91 in.
Flight Rule: VFR
Wind Data
15 MPH
Gust: 23 MPH
250° West
Cloud Level(s): Solid Overcast at 9000ft
Current Conditions at
LIVINGSTON - (KLVM)
Clear
as of 8:53 PM MST
Pressure: 29.79 in.
Wind Data
Calm
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
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 25. Breezy, with a west wind 21 to 26 mph decreasing to 14 to 19 mph after midnight. Winds could gust as high as 44 mph.

20% chance of snow Thursday Thursday... A 20 percent chance of snow after 1pm. Mostly cloudy, with a high near 43. Southwest wind 10 to 18 mph, with gusts as high as 30 mph.

40% chance of rain & snow Thursday Night Thursday Night... A chance of snow before 8pm, then a chance of rain and snow between 8pm and 11pm, then a chance of rain after 11pm. Mostly cloudy, with a temperature falling to near 38 by 9pm, then rising to around 46 during the remainder of the night. Breezy, with a south southwest wind 21 to 25 mph, with gusts as high as 39 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

80% chance of rain & snow Friday Friday... Rain, possibly mixed with snow, mainly before 5pm. High near 51. Breezy, with a southwest wind 21 to 24 mph, with gusts as high as 37 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

50% chance of rain & snow Friday Night Friday Night... A chance of rain and snow before 8pm, then a chance of snow. Mostly cloudy, with a low around 20. West wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

Sunny on Saturday Saturday... Sunny, with a high near 37. West southwest wind 11 to 18 mph, with gusts as high as 30 mph.

Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 20. South wind 10 to 14 mph, with gusts as high as 22 mph.

Partly Sunny on Sunday Sunday... Partly sunny, with a high near 41. South wind 6 to 8 mph.

10% chance of rain & snow Sunday Night Sunday Night... A slight chance of rain and snow. Mostly cloudy, with a low around 31.

20% chance of rain & snow Monday Monday... A chance of rain and snow before 11am, then a chance of rain. Mostly cloudy, with a high near 46.

10% chance of rain & snow Monday Night Monday Night... A slight chance of rain and snow. Mostly cloudy, with a low around 26.

10% chance of rain & snow Tuesday Tuesday... A slight chance of rain and snow. Partly sunny, with a high near 42.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 29.

20% chance of rain & snow Wednesday Wednesday... A chance of rain and snow. Partly sunny, with a high near 46.

Current Radar Image


Sun Almanac for Arnold, Montana
Sunrise: 08:02 AM
Sunset: 4:43 PM
Civil Sunrise:07:27 AM
Civil Sunset: 5:17 PM
Nautical Sunrise: 06:50 AM
Nautical Sunset: 5:55 PM
Astro Sunrise: 06:13 AM
Astro Sunset: 6:31 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.