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Trinity, Montana Weather Forecast
Trinity, Montana Weather
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Weather Forecast for Trinity, Montana : Lewis and Clark County
Issued: 4:03 am MST Dec 17, 2025 Latitude: 46.7693823 Longitude: -112.2175108 View on Google Maps

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Overnight Wednesday Thursday Friday Saturday Sunday Monday Tuesday
50% chance of rain on Overnight 90% chance of rain & snow on Wednesday 40% chance of snow on Thursday 80% chance of rain & snow on Friday 20% chance of snow on Saturday 20% chance of snow on Sunday 20% chance of rain & snow on Monday 10% chance of rain & snow on Tuesday
Low: 47°F High: 32 °F High: 39°F High: 43°F High: 35°F High: 37°F High: 41°F High: 39°F
Low: 26°F Low: 32°F Low: 23°F Low: 21°F Low: 26°F Low: 23°F  
Rain Rain & Snow Snow Rain & Snow Snow Snow Rain & Snow Rain & Snow
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Current Conditions at
HELENA - (KHLN)
54°
Mostly Cloudy
as of 4:53 AM MST
Rel. Humidity: 37%
Dew Point: 28°F
Visibility: 10 Miles
Pressure: 29.38 in.
Flight Rule: VFR
Wind Data
24 MPH
Gust: 36 MPH
210° Southwest
Cloud Level(s): Scattered at 8500ft, Broken at 11000ft
Current Conditions at
BUTTE - (KBTM)
43°
Feels like 33°F
Cloudy
Light Rain
as of 4:53 AM MST
Rel. Humidity: 60%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 29.50 in.
Flight Rule: VFR
Wind Data
24 MPH
Gust: 36 MPH
190° South
Cloud Level(s): Broken at 5500ft, Broken at 6500ft, Solid Overcast at 10000ft
Current Conditions at
GREAT FALLS - (KGTF)
52°
Clear
as of 4:53 AM MST
Rel. Humidity: 40%
Dew Point: 28°F
Visibility: 10 Miles
Pressure: 29.22 in.
Flight Rule: VFR
Wind Data
32 MPH
Gust: 44 MPH
220° Southwest
Cloud Level(s): Clear
Current Conditions at
BOZEMAN - (KBZN)
50°
Feels like 44°F
Clear
as of 4:56 AM MST
Rel. Humidity: 43%
Dew Point: 28°F
Visibility: 10 Miles
Pressure: 29.50 in.
Flight Rule: VFR
Wind Data
16 MPH
240° Southwest
Cloud Level(s): Clear
50% chance of rain Overnight Overnight... A 50 percent chance of rain. Mostly cloudy, with a steady temperature around 47. South wind around 20 mph, with gusts as high as 39 mph.

90% chance of rain & snow Wednesday Wednesday... Rain and snow before 10am, then a chance of snow between 10am and noon. Patchy blowing dust. Temperature falling to around 32 by 5pm. Windy, with a west wind 23 to 28 mph increasing to 32 to 37 mph in the afternoon. Winds could gust as high as 55 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

Dust on Wednesday Night Wednesday Night... Patchy blowing dust before 11pm. Increasing clouds, with a low around 26. Windy, with a west wind 27 to 32 mph decreasing to 14 to 19 mph after midnight. Winds could gust as high as 55 mph.

40% chance of snow Thursday Thursday... A 40 percent chance of snow after 11am. Mostly cloudy, with a high near 39. South wind 9 to 14 mph, with gusts as high as 24 mph. New snow accumulation of less than a half inch possible.

80% chance of rain & snow Thursday Night Thursday Night... Rain likely, possibly mixed with snow before 11pm, then rain between 11pm and 2am, then rain, possibly mixed with snow after 2am. Low around 32. South southwest wind 14 to 18 mph, with gusts as high as 39 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

80% chance of rain & snow Friday Friday... Rain and snow, becoming all snow after 8am. High near 43. West wind 15 to 21 mph, with gusts as high as 41 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

60% chance of snow Friday Night Friday Night... Snow likely, mainly before 11pm. Mostly cloudy, with a low around 23. West wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

20% chance of snow Saturday Saturday... A chance of snow. Mostly sunny, with a high near 35. West southwest wind 11 to 17 mph, with gusts as high as 28 mph.

10% chance of snow Saturday Night Saturday Night... A slight chance of snow. Partly cloudy, with a low around 21.

20% chance of snow Sunday Sunday... A chance of snow, mainly after 5pm. Mostly sunny, with a high near 37.

20% chance of rain & snow Sunday Night Sunday Night... A chance of rain and snow. Mostly cloudy, with a low around 26.

20% chance of rain & snow Monday Monday... A chance of rain and snow. Partly sunny, with a high near 41.

20% chance of rain & snow Monday Night Monday Night... A chance of rain and snow. Mostly cloudy, with a low around 23.

10% chance of rain & snow Tuesday Tuesday... A slight chance of rain and snow. Partly sunny, with a high near 39.

Current Radar Image


Sun Almanac for Trinity, Montana
Sunrise: 08:09 AM
Sunset: 4:42 PM
Civil Sunrise:07:34 AM
Civil Sunset: 5:17 PM
Nautical Sunrise: 06:55 AM
Nautical Sunset: 5:56 PM
Astro Sunrise: 06:18 AM
Astro Sunset: 6:32 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.