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Sumatra, Montana Weather Forecast
Sumatra, Montana Weather
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Weather Forecast for Sumatra, Montana : Rosebud County
Issued: 2:13 am MST Dec 17, 2025 Latitude: 46.6183191 Longitude: -107.5511999 View on Google Maps

MouseOver for Detail Forecast
Overnight Wednesday Thursday Friday Saturday Sunday Monday Tuesday
Mostly Cloudy on Overnight 60% chance of rain on Wednesday Increasing Clouds on Thursday 50% chance of rain & snow on Friday Mostly Sunny on Saturday Mostly Sunny on Sunday 20% chance of rain & snow on Monday Partly Sunny on Tuesday
Low: 41°F High: 49 °F High: 35°F High: 47 °F High: 35°F High: 36°F High: 38°F High: 37°F
Low: 14°F Low: 30 °F Low: 18°F Low: 20°F Low: 23°F Low: 21°F  
Mostly Cloudy Rain Increasing Clouds Rain & Snow Mostly Sunny Mostly Sunny Rain & Snow Partly Sunny
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Current Conditions at
JORDAN - (KJDN)
36°
Clear
as of 1:48 AM MST
Rel. Humidity: 80%
Dew Point: 30°F
Pressure: 29.58 in.
Wind Data
3 MPH
130° Southeast
Current Conditions at
BILLINGS - (KBIL)
46°
Feels like 41°F
Mostly Clear
as of 1:53 AM MST
Rel. Humidity: 45%
Dew Point: 27°F
Visibility: 10 Miles
Pressure: 29.64 in.
Flight Rule: VFR
Wind Data
12 MPH
240° Southwest
Cloud Level(s): Few at 18000ft
Current Conditions at
MILES CITY - (KMLS)
36°
Feels like 28°F
Clear
as of 1:53 AM MST
Rel. Humidity: 80%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 29.64 in.
Flight Rule: VFR
Wind Data
9 MPH
150° Southeast
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
Mostly Cloudy on Overnight Overnight... Mostly cloudy, with a steady temperature around 41. South southwest wind around 16 mph.

60% chance of rain Wednesday Wednesday... Showers likely, mainly between 9am and 1pm. Cloudy, then gradually becoming mostly sunny, with a temperature rising to near 49 by 10am, then falling to around 38 during the remainder of the day. South southwest wind 17 to 27 mph becoming west 28 to 38 mph in the afternoon. Winds could gust as high as 50 mph. Chance of precipitation is 60%.

Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 14. Wind chill values as low as zero. Northwest wind 34 to 44 mph decreasing to 24 to 34 mph after midnight. Winds could gust as high as 60 mph.

Increasing Clouds on Thursday Thursday... Increasing clouds, with a high near 35. West northwest wind 7 to 10 mph becoming south in the morning.

30% chance of snow Thursday Night Thursday Night... A 30 percent chance of snow before 11pm. Cloudy, with a temperature falling to near 30 by 10pm, then rising to around 41 during the remainder of the night. South southwest wind 10 to 20 mph. Little or no snow accumulation expected.

50% chance of rain & snow Friday Friday... A chance of rain and snow after 11am. Mostly cloudy, with a temperature rising to near 47 by 11am, then falling to around 36 during the remainder of the day. Southwest wind 15 to 22 mph becoming northwest in the afternoon. Chance of precipitation is 50%. 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 18. North northwest wind 6 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 35. West wind 6 to 10 mph.

Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 20. West southwest wind 8 to 10 mph.

Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 36. South wind 7 to 9 mph.

20% chance of rain & snow Sunday Night Sunday Night... A slight chance of rain and snow. Mostly cloudy, with a low around 23. South southwest wind around 7 mph. Chance of precipitation is 20%.

20% chance of rain & snow Monday Monday... A slight chance of rain and snow. Mostly cloudy, with a high near 38. South wind around 9 mph becoming west northwest in the afternoon. Chance of precipitation is 20%.

20% chance of rain & snow Monday Night Monday Night... A slight chance of rain and snow. Mostly cloudy, with a low around 21. Northwest wind around 7 mph becoming west southwest after midnight. Chance of precipitation is 20%.

Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 37. West southwest wind 6 to 8 mph becoming south southeast in the afternoon.

Current Radar Image


Sun Almanac for Sumatra, Montana
Sunrise: 07:50 AM
Sunset: 4:24 PM
Civil Sunrise:07:14 AM
Civil Sunset: 4:59 PM
Nautical Sunrise: 06:36 AM
Nautical Sunset: 5:37 PM
Astro Sunrise: 05:59 AM
Astro Sunset: 6:14 PM
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