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Big Sandy, Montana Weather Forecast
Big Sandy, Montana Weather
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Weather Forecast for Big Sandy, Montana : Chouteau County
Issued: 9:27 pm MST Dec 16, 2025 Latitude: 48.1785915 Longitude: -110.1121523 View on Google Maps

MouseOver for Detail Forecast
Overnight Wednesday Thursday Friday Saturday Sunday Monday Tuesday
30% chance of rain on Overnight 40% chance of rain & snow on Wednesday Increasing Clouds on Thursday 20% chance of rain & snow on Friday Mostly Sunny on Saturday Mostly Sunny on Sunday 10% chance of rain & snow on Monday Partly Sunny on Tuesday
Low: 40°F High: 45 °F High: 39°F High: 45°F High: 35°F High: 34°F High: 36°F High: 35°F
Low: 14°F Low: 28°F Low: 13°F Low: 16°F Low: 18°F Low: 16°F  
Rain Rain & Snow Increasing Clouds Rain & Snow Mostly Sunny Mostly Sunny Rain & Snow Partly Sunny
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Current Conditions at
HAVRE - (KHVR)
45°
Feels like 38°F
Mostly Clear
as of 1:53 AM MST
Rel. Humidity: 65%
Dew Point: 34°F
Visibility: 10 Miles
Pressure: 29.45 in.
Flight Rule: VFR
Wind Data
14 MPH
210° Southwest
Cloud Level(s): Few at 11000ft
Current Conditions at
GREAT FALLS - (KGTF)
46°
Feels like 39°F
Clear
as of 1:53 AM MST
Rel. Humidity: 42%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 29.45 in.
Flight Rule: VFR
Wind Data
17 MPH
210° Southwest
Cloud Level(s): Clear
Current Conditions at
LEWISTOWN - (KLWT)
45°
Feels like 37°F
Clear
as of 1:54 AM MST
Rel. Humidity: 45%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 29.57 in.
Flight Rule: VFR
Wind Data
15 MPH
210° Southwest
Cloud Level(s): Clear
30% chance of rain Overnight Overnight... A 30 percent chance of rain after 5am. Mostly cloudy, with a steady temperature around 40. South southeast wind around 14 mph, with gusts as high as 23 mph.

40% chance of rain & snow Wednesday Wednesday... A chance of rain before 9am, then a chance of snow after 2pm. Patchy blowing dust after 11am. Cloudy through mid morning, then gradual clearing, with a temperature rising to near 45 by 10am, then falling to around 34 during the remainder of the day. Windy, with a south wind 21 to 26 mph becoming west southwest 32 to 37 mph in the morning. Winds could gust as high as 60 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 14. Blustery, with a west northwest wind 19 to 29 mph decreasing to 9 to 19 mph after midnight. Winds could gust as high as 47 mph.

Increasing Clouds on Thursday Thursday... Increasing clouds, with a high near 39. South wind 6 to 9 mph.

20% chance of rain & snow Thursday Night Thursday Night... A slight chance of snow before 8pm, then a slight chance of rain and snow between 8pm and 11pm, then a slight chance of rain after 11pm. Mostly cloudy, with a low around 28. South southeast wind 10 to 16 mph becoming southwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 20%.

20% chance of rain & snow Friday Friday... A slight chance of rain and snow before 8am, then a slight chance of snow. Mostly sunny, with a high near 45. West northwest wind 14 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

30% chance of snow Friday Night Friday Night... A 30 percent chance of snow, mainly before 11pm. Mostly cloudy, with a low around 13. West northwest wind 6 to 10 mph, with gusts as high as 18 mph. Little or no snow accumulation expected.

Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 35. West southwest wind 6 to 9 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 34.

10% chance of snow Sunday Night Sunday Night... A slight chance of snow. Mostly cloudy, with a low around 18.

10% chance of rain & snow Monday Monday... A slight chance of rain and snow. Partly sunny, with a high near 36.

Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 16.

Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 35.

Current Radar Image


Sun Almanac for Big Sandy, Montana
Sunrise: 08:06 AM
Sunset: 4:27 PM
Civil Sunrise:07:30 AM
Civil Sunset: 5:04 PM
Nautical Sunrise: 06:50 AM
Nautical Sunset: 5:44 PM
Astro Sunrise: 06:12 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.