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Summit, Montana Weather Forecast
Summit, Montana Weather
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Weather Forecast for Summit, Montana : Madison County
Issued: 9:27 pm MST Dec 16, 2025 Latitude: 45.2188138 Longitude: -111.9308111 View on Google Maps

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Overnight Wednesday Thursday Friday Saturday Sunday Monday Tuesday
30% chance of snow on Overnight 90% chance of blowing snow on Wednesday 60% chance of snow on Thursday 70% chance of snow on Friday 20% chance of snow on Saturday 10% chance of snow on Sunday 20% chance of snow on Monday 10% chance of snow on Tuesday
Low: 37°F High: 19 °F High: 32°F High: 35°F High: 28°F High: 32°F High: 36°F High: 38°F
Low: 18°F Low: 28°F Low: 22°F Low: 19°F Low: 29°F Low: 32°F  
Snow Blowing Snow Snow Snow Snow Snow Snow Snow
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Current Conditions at
DILLON - (KDLN)
46°
Feels like 39°F
Mostly Cloudy
as of 1:53 AM MST
Rel. Humidity: 36%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 29.70 in.
Flight Rule: VFR
Wind Data
18 MPH
Gust: 26 MPH
200° South
Cloud Level(s): Broken at 11000ft
Current Conditions at
BOZEMAN - (KBZN)
39°
Cloudy
as of 1:56 AM MST
Rel. Humidity: 55%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 29.68 in.
Flight Rule: VFR
Wind Data
7 MPH
110° East
Cloud Level(s): Solid Overcast at 9500ft
Current Conditions at
LIVINGSTON - (KLVM)
48°
Feels like 39°F
Clear
as of 1:53 AM MST
Rel. Humidity: 39%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 29.62 in.
Flight Rule: VFR
Wind Data
30 MPH
Gust: 45 MPH
220° Southwest
Cloud Level(s): Clear
30% chance of snow Overnight Overnight... A 30 percent chance of snow, mainly between 4am and 5am. Mostly cloudy, with a steady temperature around 37. Windy, with a south southwest wind around 31 mph, with gusts as high as 55 mph. Total nighttime snow accumulation of less than a half inch possible.

90% chance of blowing snow Wednesday Wednesday... Snow, mainly before noon. The snow could be heavy at times. Areas of blowing snow between 10am and 11am. Temperature falling to around 19 by 5pm. Wind chill values as low as zero. Windy, with a west wind 33 to 39 mph, with gusts as high as 65 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 18. Wind chill values as low as zero. Windy, with a west wind 27 to 32 mph decreasing to 18 to 23 mph after midnight. Winds could gust as high as 55 mph.

60% chance of snow Thursday Thursday... Snow likely, mainly after 11am. Mostly cloudy, with a high near 32. South wind 14 to 21 mph, with gusts as high as 34 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

70% chance of snow Thursday Night Thursday Night... Snow likely, mainly before 11pm. Mostly cloudy, with a low around 28. Breezy, with a south wind 21 to 24 mph, with gusts as high as 46 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

70% chance of snow Friday Friday... Snow likely. Mostly cloudy, with a high near 35. Breezy, with a southwest wind around 24 mph, with gusts as high as 45 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

60% chance of snow Friday Night Friday Night... Snow likely, mainly before 11pm. Mostly cloudy, with a low around 22. West southwest wind 16 to 20 mph, with gusts as high as 36 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

20% chance of snow Saturday Saturday... A chance of snow, mainly before 11am. Mostly sunny, with a high near 28. West southwest wind 14 to 16 mph, with gusts as high as 29 mph.

10% chance of snow Saturday Night Saturday Night... A slight chance of snow before 11pm. Partly cloudy, with a low around 19.

10% chance of snow Sunday Sunday... A slight chance of snow. Partly sunny, with a high near 32.

20% chance of snow Sunday Night Sunday Night... A chance of snow. Mostly cloudy, with a low around 29.

20% chance of snow Monday Monday... A chance of snow. Partly sunny, with a high near 36.

10% chance of snow Monday Night Monday Night... A slight chance of snow. Mostly cloudy, with a low around 32.

10% chance of snow Tuesday Tuesday... A slight chance of snow. Mostly cloudy, with a high near 38.

Current Radar Image


Sun Almanac for Summit, Montana
Sunrise: 08:02 AM
Sunset: 4:46 PM
Civil Sunrise:07:28 AM
Civil Sunset: 5:20 PM
Nautical Sunrise: 06:50 AM
Nautical Sunset: 5:58 PM
Astro Sunrise: 06:14 AM
Astro Sunset: 6:34 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.