Summit Valley, Montana Weather
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Weather Forecast for Summit Valley, Montana : Madison County
Issued: 10:08 am MDT May 11, 2025 Latitude: 45.7704829 Longitude: -111.8924843 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Monday Tuesday Wednesday Thursday Friday Saturday
50% chance of thunderstorms on This Afternoon 20% chance of thunderstorms on Tonight 20% chance of rain on Monday 80% chance of thunderstorms on Tuesday 60% chance of thunderstorms on Wednesday 20% chance of thunderstorms on Thursday 20% chance of thunderstorms on Friday Thunderstorms on Saturday
High: 74°F Low: 48°F High: 71°F High: 52°F High: 55°F High: 56°F High: 60°F High: 60°F
Low: 40°F Low: 39°F Low: 38°F Low: 38°F Low: 40°F  
Thunderstorms Thunderstorms Rain Thunderstorms Thunderstorms Thunderstorms Thunderstorms Thunderstorms
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Current Conditions at
BUTTE - (KBTM)
66°
Mostly Clear
as of 12:53 PM MDST
Rel. Humidity: 37%
Dew Point: 39°F
Visibility: 10 Miles
Pressure: 29.84 in.
Flight Rule: VFR
Wind Data
16 MPH
180° South
Cloud Level(s): Few at 9500ft
Current Conditions at
BOZEMAN - (KBZN)
63°
Clear
as of 12:56 PM MDST
Rel. Humidity: 67%
Dew Point: 52°F
Visibility: 10 Miles
Pressure: 29.85 in.
Flight Rule: VFR
Wind Data
8 MPH
030° Northeast
Cloud Level(s): Clear
Current Conditions at
DILLON - (KDLN)
66°
Clear
as of 12:53 PM MDST
Rel. Humidity: 37%
Dew Point: 39°F
Visibility: 10 Miles
Pressure: 29.82 in.
Flight Rule: VFR
Wind Data
20 MPH
Gust: 32 MPH
170° South
Cloud Level(s): Clear
Current Conditions at
HELENA - (KHLN)
73°
Clear
as of 12:53 PM MDST
Rel. Humidity: 38%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 29.74 in.
Flight Rule: VFR
Wind Data
20 MPH
090° East
Cloud Level(s): Clear
50% chance of thunderstorms This Afternoon This Afternoon... A chance of showers and thunderstorms before 3pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 74. Breezy, with a southwest wind 22 to 24 mph, with gusts as high as 38 mph. Chance of precipitation is 50%.
20% chance of thunderstorms Tonight Tonight... A slight chance of showers and thunderstorms between 7pm and 8pm. Partly cloudy, with a low around 48. South southwest wind 16 to 21 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 34 mph. Chance of precipitation is 20%.
20% chance of rain Monday Monday... A 20 percent chance of showers after noon. Mostly sunny, with a high near 71. Breezy, with a southwest wind 9 to 14 mph increasing to 18 to 23 mph in the morning. Winds could gust as high as 40 mph.
70% chance of rain Monday Night Monday Night... Showers likely. Mostly cloudy, with a low around 40. West northwest wind 13 to 18 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 70%.
80% chance of thunderstorms Tuesday Tuesday... Showers likely, then showers and possibly a thunderstorm after noon. High near 52. North northwest wind 3 to 7 mph. Chance of precipitation is 80%.
70% chance of rain Tuesday Night Tuesday Night... Showers likely, mainly before midnight. Mostly cloudy, with a low around 39. Northwest wind 6 to 9 mph. Chance of precipitation is 70%.
60% chance of thunderstorms Wednesday Wednesday... A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 55. Northwest wind 6 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
20% chance of rain Wednesday Night Wednesday Night... A chance of showers, mainly before midnight. Mostly cloudy, with a low around 38. West wind 6 to 11 mph, with gusts as high as 22 mph.
20% chance of thunderstorms Thursday Thursday... A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, 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 38.
20% chance of thunderstorms Friday Friday... A chance of showers and thunderstorms. Mostly cloudy, with a high near 60.
20% chance of rain Friday Night Friday Night... A chance of showers. Mostly cloudy, with a low around 40.
Thunderstorms on Saturday Saturday... Showers likely and possibly a thunderstorm. Partly sunny, with a high near 60.
Current Radar Image


Sun Almanac for Summit Valley, Montana
Sunrise: 06:00 AM
Sunset: 8:48 PM
Civil Sunrise:05:26 AM
Civil Sunset: 9:22 PM
Nautical Sunrise: 04:42 AM
Nautical Sunset: 10:06 PM
Astro Sunrise: 03:51 AM
Astro Sunset: 10:57 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.