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Amherst, Montana Weather Forecast
Amherst, Montana Weather
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Weather Forecast for Amherst, Montana : Fergus County
Issued: 9:43 pm MST Dec 17, 2025 Latitude: 47.1496963 Longitude: -109.6249101 View on Google Maps

MouseOver for Detail Forecast
Tonight Thursday Friday Saturday Sunday Monday Tuesday Wednesday
20% chance of snow on Tonight Increasing Clouds on Thursday 40% chance of rain & snow on Friday Mostly Sunny on Saturday Partly Sunny on Sunday 20% chance of rain & snow on Monday Partly Sunny on Tuesday 10% chance of rain & snow on Wednesday
Low: 18°F High: 43°F High: 49°F High: 39°F High: 45°F High: 45°F High: 45°F High: 47°F
Low: 34 °F Low: 20°F Low: 23°F Low: 29°F Low: 23°F Low: 25°F  
Snow Increasing Clouds Rain & Snow Mostly Sunny Partly Sunny Rain & Snow Partly Sunny Rain & Snow
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Current Conditions at
LEWISTOWN - (KLWT)
25°
Feels like 11°F
Cloudy
as of 8:54 PM MST
Rel. Humidity: 79%
Dew Point: 19°F
Visibility: 10 Miles
Pressure: 29.68 in.
Flight Rule: VFR
Wind Data
18 MPH
Gust: 36 MPH
310° Northwest
Cloud Level(s): Solid Overcast at 7500ft
Current Conditions at
GREAT FALLS - (KGTF)
19°
Clear
as of 8:53 PM MST
Rel. Humidity: 85%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 29.82 in.
Flight Rule: VFR
Wind Data
6 MPH
040° Northeast
Cloud Level(s): Clear
Current Conditions at
HAVRE - (KHVR)
10°
Feels like -6°F
Mostly Cloudy
as of 9:02 PM MST
Rel. Humidity: 66%
Dew Point: 1°F
Visibility: 10 Miles
Pressure: 29.88 in.
Flight Rule: MVFR
Wind Data
15 MPH
Gust: 28 MPH
310° Northwest
Cloud Level(s): Few at 1800ft, Broken at 2700ft, Broken at 10000ft
20% chance of snow Tonight Tonight... A 20 percent chance of snow before 1am. Partly cloudy, with a low around 18. Windy, with a northwest wind 25 to 30 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 47 mph.
Increasing Clouds on Thursday Thursday... Increasing clouds, with a high near 43. South southwest wind 8 to 14 mph, with gusts as high as 22 mph.
20% chance of snow Thursday Night Thursday Night... A slight chance of snow, mixing with rain after 8pm, then gradually ending. Mostly cloudy, with a temperature falling to near 34 by 9pm, then rising to around 46 during the remainder of the night. Southwest wind 16 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
40% chance of rain & snow Friday Friday... A slight chance of rain before 8am, then a chance of rain and snow between 8am and 2pm, then a chance of snow after 2pm. Mostly cloudy, with a high near 49. West northwest wind 17 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
20% chance of snow Friday Night Friday Night... A 20 percent chance of snow before 11pm. Partly cloudy, with a low around 20. West wind 9 to 11 mph, with gusts as high as 20 mph.
Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 39. West wind 10 to 18 mph, with gusts as high as 29 mph.
Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 23. South southwest wind 10 to 13 mph, with gusts as high as 22 mph.
Partly Sunny on Sunday Sunday... Partly sunny, with a high near 45. South wind around 9 mph.
Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 29.
20% chance of rain & snow Monday Monday... A chance of rain and snow, mainly before 11am. Mostly cloudy, with a high near 45.
10% chance of rain & snow Monday Night Monday Night... A slight chance of rain and snow. Mostly cloudy, with a low around 23.
Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 45.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 25.
10% chance of rain & snow Wednesday Wednesday... A slight chance of rain and snow. Partly sunny, with a high near 47.
Current Radar Image


Sun Almanac for Amherst, Montana
Sunrise: 08:01 AM
Sunset: 4:30 PM
Civil Sunrise:07:25 AM
Civil Sunset: 5:06 PM
Nautical Sunrise: 06:46 AM
Nautical Sunset: 5:45 PM
Astro Sunrise: 06:09 AM
Astro Sunset: 6:22 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.