Roundup, Montana Weather
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Weather Forecast for Roundup, Montana : Musselshell County
Issued: 5:07 am MDT May 11, 2025 Latitude: 46.445242 Longitude: -108.5417999 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Monday Tuesday Wednesday Thursday Friday Saturday
20% chance of thunderstorms on Today 20% chance of thunderstorms on Tonight Mostly Sunny on Monday 30% chance of on Tuesday 80% chance of thunderstorms on Wednesday 60% chance of thunderstorms on Thursday 30% chance of on Friday 50% chance of on Saturday
High: 84°F Low: 52°F High: 85°F High: 67°F High: 56°F High: 61°F High: 63°F High: 66°F
Low: 48°F Low: 45°F Low: 43°F Low: 39°F Low: 43°F  
Thunderstorms Thunderstorms Mostly Sunny Partly Sunny Thunderstorms Thunderstorms Partly Sunny Partly Sunny
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Current Conditions at
BILLINGS - (KBIL)
66°
Mostly Cloudy
as of 9:53 AM MDST
Rel. Humidity: 48%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 29.81 in.
Flight Rule: VFR
Wind Data
8 MPH
230° Southwest
Cloud Level(s): Few at 13000ft, Broken at 18000ft
Current Conditions at
LEWISTOWN - (KLWT)
66°
Clear
as of 9:54 AM MDST
Rel. Humidity: 48%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 29.80 in.
Flight Rule: VFR
Wind Data
5 MPH
170° South
Cloud Level(s): Clear
Current Conditions at
LIVINGSTON - (KLVM)
63°
Clear
as of 9:53 AM MDST
Rel. Humidity: 55%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 29.87 in.
Flight Rule: VFR
Wind Data
7 MPH
320° Northwest
Cloud Level(s): Clear
20% chance of thunderstorms Today Today... A 20 percent chance of showers and thunderstorms after 3pm. Some of the storms could be severe. Partly sunny, with a high near 84. Southwest wind 6 to 13 mph.
20% chance of thunderstorms Tonight Tonight... A 20 percent chance of showers and thunderstorms before 9pm. Some of the storms could be severe. Mostly cloudy, with a low around 52. Southwest wind 6 to 11 mph becoming light west southwest after midnight.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 85. Light southwest wind increasing to 10 to 15 mph in the morning.
40% chance of rain Monday Night Monday Night... A 40 percent chance of showers. Mostly cloudy, with a low around 48. West wind around 11 mph becoming north northwest in the evening.
30% chance of Tuesday Tuesday... A 30 percent chance of showers, mainly after noon. Partly sunny, with a high near 67. North wind 6 to 11 mph.
70% chance of rain Tuesday Night Tuesday Night... Showers likely. Cloudy, with a low around 45. North northwest wind around 10 mph. Chance of precipitation is 70%.
80% chance of thunderstorms Wednesday Wednesday... Showers, with thunderstorms also possible after noon. High near 56. North northwest wind 10 to 16 mph. Chance of precipitation is 80%.
50% chance of rain Wednesday Night Wednesday Night... A 50 percent chance of showers. Cloudy, with a low around 43. West northwest wind 9 to 13 mph.
60% chance of thunderstorms Thursday Thursday... A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 61. Northwest wind 10 to 16 mph. Chance of precipitation is 60%.
30% chance of rain Thursday Night Thursday Night... A 30 percent chance of showers before midnight. Mostly cloudy, with a low around 39. North northwest wind 8 to 13 mph becoming light west after midnight.
30% chance of Friday Friday... A 30 percent chance of showers. Partly sunny, with a high near 63. Calm wind becoming west 5 to 7 mph in the afternoon.
40% chance of rain Friday Night Friday Night... A 40 percent chance of showers. Mostly cloudy, with a low around 43. North northeast wind around 6 mph becoming calm in the evening.
50% chance of Saturday Saturday... A 50 percent chance of showers. Partly sunny, with a high near 66. Calm wind becoming west 5 to 8 mph in the morning.
Current Radar Image


Sun Almanac for Roundup, Montana
Sunrise: 05:45 AM
Sunset: 8:36 PM
Civil Sunrise:05:10 AM
Civil Sunset: 9:11 PM
Nautical Sunrise: 04:25 AM
Nautical Sunset: 9:56 PM
Astro Sunrise: 03:32 AM
Astro Sunset: 10:49 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.