Dewey, Montana Weather
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Weather Forecast for Dewey, Montana : Beaverhead County
Issued: 10:08 am MDT May 11, 2025 Latitude: 45.777148 Longitude: -112.8550332 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Monday Tuesday Wednesday Thursday Friday Saturday
40% chance of thunderstorms on Today 20% chance of thunderstorms on Tonight 30% chance of  on Monday 90% chance of rain & snow on Tuesday 70% chance of rain & snow on Wednesday 20% chance of thunderstorms on Thursday 20% chance of thunderstorms on Friday Thunderstorms on Saturday
High: 73°F Low: 45°F High: 64°F High: 49°F High: 52°F High: 56°F High: 58°F High: 58°F
Low: 36°F Low: 35°F Low: 34°F Low: 34°F Low: 36°F  
Thunderstorms Thunderstorms Partly Sunny Rain & Snow Rain & Snow Thunderstorms Thunderstorms Thunderstorms
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Current Conditions at
BUTTE - (KBTM)
61°
Clear
as of 10:53 AM MDST
Rel. Humidity: 48%
Dew Point: 41°F
Visibility: 10 Miles
Pressure: 29.88 in.
Flight Rule: VFR
Wind Data
5 MPH
180° South
Cloud Level(s): Clear
Current Conditions at
DILLON - (KDLN)
55°
Clear
as of 10:53 AM MDST
Rel. Humidity: 66%
Dew Point: 45°F
Visibility: 10 Miles
Pressure: 29.88 in.
Flight Rule: VFR
Wind Data
3 MPH
Cloud Level(s): Clear
Current Conditions at
HELENA - (KHLN)
66°
Clear
as of 10:53 AM MDST
Rel. Humidity: 39%
Dew Point: 41°F
Visibility: 10 Miles
Pressure: 29.80 in.
Flight Rule: VFR
Wind Data
10 MPH
100° East
Cloud Level(s): Clear
40% chance of thunderstorms Today Today... A chance of showers and thunderstorms. Partly sunny, with a high near 73. Breezy, with a southwest wind 18 to 24 mph, with gusts as high as 32 mph. Chance of precipitation is 40%.

20% chance of thunderstorms Tonight Tonight... A 20 percent chance of showers and thunderstorms, mainly between 9pm and 10pm. Partly cloudy, with a low around 45. Breezy, with a southwest wind 17 to 22 mph becoming south 10 to 15 mph in the evening. Winds could gust as high as 31 mph.

30% chance of  Monday Monday... A 30 percent chance of showers after noon. Partly sunny, with a high near 64. Breezy, with a southwest wind 10 to 15 mph increasing to 17 to 22 mph in the morning. Winds could gust as high as 34 mph.

70% chance of rain & snow Monday Night Monday Night... Rain showers likely before 3am, then rain and snow showers likely. Mostly cloudy, with a low around 36. West southwest wind 13 to 18 mph becoming northwest 6 to 11 mph after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

90% chance of rain & snow Tuesday Tuesday... Rain and snow showers likely before 9am, then rain showers. Some thunder is also possible. High near 49. North wind 6 to 13 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

70% chance of rain Tuesday Night Tuesday Night... Showers likely, mainly before midnight. Mostly cloudy, with a low around 35. Northwest wind 9 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

70% chance of rain & snow Wednesday Wednesday... A chance of rain and snow showers before 9am, then rain showers likely. Some thunder is also possible. Mostly cloudy, with a high near 52. Northwest wind 9 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

20% chance of rain Wednesday Night Wednesday Night... A chance of showers before midnight. Mostly cloudy, with a low around 34. West wind 8 to 17 mph, with gusts as high as 24 mph.

20% chance of thunderstorms Thursday Thursday... A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 56.

10% chance of rain Thursday Night Thursday Night... A slight chance of showers before midnight. Mostly cloudy, with a low around 34.

20% chance of thunderstorms Friday Friday... A chance of showers and thunderstorms. Mostly cloudy, with a high near 58.

20% chance of rain Friday Night Friday Night... A chance of showers. Mostly cloudy, with a low around 36.

Thunderstorms on Saturday Saturday... Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 58.

Current Radar Image


Sun Almanac for Dewey, Montana
Sunrise: 06:04 AM
Sunset: 8:52 PM
Civil Sunrise:05:30 AM
Civil Sunset: 9:26 PM
Nautical Sunrise: 04:46 AM
Nautical Sunset: 10:10 PM
Astro Sunrise: 03:55 AM
Astro Sunset: 11:01 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.