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Sweet Grass, Montana Weather Forecast
Sweet Grass, Montana Weather
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Click for High Wind Warning for Sweet Grass, Montana
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Weather Forecast for Sweet Grass, Montana : Toole County
Issued: 2:47 am MST Dec 17, 2025 Latitude: 48.9961096 Longitude: -111.960596 View on Google Maps

MouseOver for Detail Forecast
Overnight Wednesday Thursday Friday Saturday Sunday Monday Tuesday
Mostly Cloudy on Overnight 40% chance of rain & snow on Wednesday Partly Sunny on Thursday 10% chance of snow on Friday Mostly Sunny on Saturday Mostly Sunny on Sunday 10% chance of snow on Monday Mostly Sunny on Tuesday
Low: 40°F High: 42 °F High: 37°F High: 40°F High: 34°F High: 32°F High: 26°F High: 32°F
Low: 12°F Low: 23°F Low: 4 °F Low: 16°F Low: 10°F Low: 7°F  
Mostly Cloudy Rain & Snow Partly Sunny Snow Mostly Sunny Mostly Sunny Snow Mostly Sunny
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Current Conditions at
CUTBANK - (KCTB)
43°
Feels like 32°F
Clear
as of 2:56 AM MST
Rel. Humidity: 60%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 29.29 in.
Flight Rule: VFR
Wind Data
29 MPH
Gust: 41 MPH
230° Southwest
Cloud Level(s): Clear
Current Conditions at
HAVRE - (KHVR)
46°
Feels like 41°F
Clear
as of 2:53 AM MST
Rel. Humidity: 61%
Dew Point: 34°F
Visibility: 10 Miles
Pressure: 29.39 in.
Flight Rule: VFR
Wind Data
12 MPH
200° South
Cloud Level(s): Clear
Current Conditions at
GREAT FALLS - (KGTF)
50°
Feels like 43°F
Clear
as of 2:53 AM MST
Rel. Humidity: 37%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 29.39 in.
Flight Rule: VFR
Wind Data
18 MPH
Gust: 29 MPH
210° Southwest
Cloud Level(s): Clear
Current Conditions at
HELENA - (KHLN)
54°
Partly Cloudy
as of 2:53 AM MST
Rel. Humidity: 32%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 29.50 in.
Flight Rule: VFR
Wind Data
13 MPH
Gust: 22 MPH
240° Southwest
Cloud Level(s): Scattered at 10000ft
Mostly Cloudy on Overnight Overnight... Mostly cloudy, with a steady temperature around 40. Breezy, with a southwest wind around 23 mph, with gusts as high as 32 mph.
40% chance of rain & snow Wednesday Wednesday... A chance of rain before 8am, then a chance of snow after 1pm. Patchy blowing dust after 8am. Increasing clouds, with a temperature rising to near 42 by 8am, then falling to around 27 during the remainder of the day. Very windy, with a southwest wind 28 to 33 mph becoming west 42 to 47 mph in the afternoon. Winds could gust as high as 60 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Mostly Clear on Wednesday Night Wednesday Night... Mostly cloudy, then gradually becoming mostly clear, with a low around 12. Blustery, with a west southwest wind 24 to 29 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 38 mph.
Partly Sunny on Thursday Thursday... Partly sunny, with a high near 37. South southwest wind 15 to 20 mph, with gusts as high as 29 mph.
20% chance of rain & snow Thursday Night Thursday Night... A slight chance of rain and snow after 11pm. Mostly cloudy, with a low around 23. Breezy, with a southwest wind 18 to 24 mph, with gusts as high as 36 mph. Chance of precipitation is 20%.
10% chance of snow Friday Friday... A 10 percent chance of snow after 11am. Mostly sunny, with a high near 40. Breezy, with a west northwest wind 15 to 22 mph, with gusts as high as 34 mph.
10% chance of snow Friday Night Friday Night... A 10 percent chance of snow before 11pm. Partly cloudy, with a low around 4. West northwest wind 9 to 11 mph.
Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 34. North northwest wind 10 to 18 mph becoming southwest in the morning. Winds could gust as high as 26 mph.
Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 16.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 32.
10% chance of snow Sunday Night Sunday Night... A slight chance of snow. Mostly cloudy, with a low around 10.
10% chance of snow Monday Monday... A slight chance of snow. Mostly sunny, with a high near 26.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 7.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 32.
Current Radar Image


Sun Almanac for Sweet Grass, Montana
Sunrise: 08:17 AM
Sunset: 4:31 PM
Civil Sunrise:07:40 AM
Civil Sunset: 5:09 PM
Nautical Sunrise: 06:59 AM
Nautical Sunset: 5:49 PM
Astro Sunrise: 06:21 AM
Astro Sunset: 6:28 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.