Portage, Montana Weather
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Weather Forecast for Portage, Montana : Cascade County
Issued: 2:37 pm MDT May 11, 2025 Latitude: 47.6527415 Longitude: -111.1246852 View on Google Maps

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This Afternoon Tonight Monday Tuesday Wednesday Thursday Friday Saturday
80% chance of thunderstorms on This Afternoon 20% chance of thunderstorms on Tonight Mostly Sunny on Monday 50% chance of rain on Tuesday 50% chance of rain on Wednesday Rain on Thursday 10% chance of on Friday Thunderstorms on Saturday
High: 79°F Low: 50°F High: 73°F High: 61°F High: 64°F High: 58°F High: 64°F High: 66°F
Low: 46°F Low: 43°F Low: 43°F Low: 39°F Low: 43°F  
Thunderstorms Thunderstorms Mostly Sunny Rain Rain Rain Partly Sunny Thunderstorms
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Current Conditions at
GREAT FALLS - (KGTF)
73°
Clear
as of 1:53 PM MDST
Rel. Humidity: 35%
Dew Point: 45°F
Visibility: 10 Miles
Pressure: 29.70 in.
Flight Rule: VFR
Wind Data
14 MPH
Gust: 23 MPH
210° Southwest
Cloud Level(s): Clear
Current Conditions at
HELENA - (KHLN)
75°
Mostly Clear
as of 1:53 PM MDST
Rel. Humidity: 31%
Dew Point: 43°F
Visibility: 10 Miles
Pressure: 29.71 in.
Flight Rule: VFR
Wind Data
13 MPH
Gust: 28 MPH
190° South
Cloud Level(s): Few at 12000ft
Current Conditions at
CUTBANK - (KCTB)
72°
Clear
as of 1:56 PM MDST
Rel. Humidity: 26%
Dew Point: 36°F
Visibility: 10 Miles
Pressure: 29.70 in.
Flight Rule: VFR
Wind Data
15 MPH
Gust: 22 MPH
120° Southeast
Cloud Level(s): Clear
80% chance of thunderstorms This Afternoon This Afternoon... A chance of showers and thunderstorms before 3pm, then showers and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Some of the storms could be severe. High near 79. South southwest wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.
20% chance of thunderstorms Tonight Tonight... A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Some of the storms could be severe. Mostly cloudy, with a low around 50. East wind 6 to 13 mph becoming southwest after midnight. Chance of precipitation is 20%.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 73. Breezy, with a southwest wind 14 to 23 mph, with gusts as high as 37 mph.
40% chance of rain Monday Night Monday Night... A 40 percent chance of showers. Cloudy, with a low around 46. Southwest wind 11 to 20 mph, with gusts as high as 29 mph.
50% chance of rain Tuesday Tuesday... A 50 percent chance of showers. Mostly cloudy, with a high near 61. West southwest wind 10 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 21 mph.
30% chance of rain Tuesday Night Tuesday Night... A 30 percent chance of showers, mainly before midnight. Mostly cloudy, with a low around 43. North northwest wind 8 to 13 mph, with gusts as high as 18 mph.
50% chance of rain Wednesday Wednesday... A 50 percent chance of showers. Mostly cloudy, with a high near 64. West wind 9 to 13 mph, with gusts as high as 20 mph.
20% chance of thunderstorms Wednesday Night Wednesday Night... A chance of showers and thunderstorms. Mostly cloudy, with a low around 43. West wind 13 to 16 mph, with gusts as high as 22 mph.
Rain on Thursday Thursday... Showers likely, mainly before noon. Mostly cloudy, with a high near 58.
Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 39.
10% chance of Friday Friday... A slight chance of showers. Partly sunny, with a high near 64.
20% chance of rain Friday Night Friday Night... A chance of showers. Mostly cloudy, with a low around 43.
Thunderstorms on Saturday Saturday... Showers likely and possibly a thunderstorm. Partly sunny, with a high near 66.
Current Radar Image


Sun Almanac for Portage, Montana
Sunrise: 05:51 AM
Sunset: 8:51 PM
Civil Sunrise:05:15 AM
Civil Sunset: 9:27 PM
Nautical Sunrise: 04:28 AM
Nautical Sunset: 10:13 PM
Astro Sunrise: 03:32 AM
Astro Sunset: 11:10 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.