Lewiston, Montana Weather
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Weather Forecast for Lewiston, Montana : Jefferson County
Issued: 10:08 am MDT May 11, 2025 Latitude: 46.4638207 Longitude: -111.9863826 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Monday Tuesday Wednesday Thursday Friday Saturday
50% chance of thunderstorms on This Afternoon 30% chance of thunderstorms on Tonight 30% chance of on Monday 80% chance of thunderstorms on Tuesday 70% chance of rain on Wednesday 20% chance of thunderstorms on Thursday 20% chance of thunderstorms on Friday Thunderstorms on Saturday
High: 79°F Low: 48°F High: 71°F High: 57°F High: 60°F High: 60°F High: 64°F High: 64°F
Low: 40°F Low: 39°F Low: 40°F Low: 37°F Low: 39°F  
Thunderstorms Thunderstorms Partly Sunny Thunderstorms Rain Thunderstorms Thunderstorms Thunderstorms
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Current Conditions at
HELENA - (KHLN)
73°
Clear
as of 1:30 PM MDST
Rel. Humidity: 29%
Dew Point: 39°F
Visibility: 10 Miles
Pressure: 29.71 in.
Flight Rule: VFR
Wind Data
18 MPH
Gust: 33 MPH
200° South
Cloud Level(s): Clear
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
GREAT FALLS - (KGTF)
73°
Clear
as of 1:38 PM MDST
Rel. Humidity: 35%
Dew Point: 45°F
Visibility: 10 Miles
Pressure: 29.71 in.
Flight Rule: VFR
Wind Data
17 MPH
Gust: 22 MPH
180° South
Cloud Level(s): Clear
50% chance of thunderstorms This Afternoon This Afternoon... A 50 percent chance of showers and thunderstorms, mainly before 5pm. Partly sunny, with a high near 79. Southwest wind around 14 mph, with gusts as high as 24 mph.
30% chance of thunderstorms Tonight Tonight... A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 48. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
30% chance of Monday Monday... A 30 percent chance of showers, mainly after noon. Partly sunny, with a high near 71. Southwest wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Winds could gust as high as 28 mph.
60% chance of rain Monday Night Monday Night... Showers likely. Cloudy, with a low around 40. West wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 60%.
80% chance of thunderstorms Tuesday Tuesday... A chance of showers, then showers and possibly a thunderstorm after noon. High near 57. Light west wind becoming north northwest 5 to 10 mph in the morning. Chance of precipitation is 80%.
50% chance of rain Tuesday Night Tuesday Night... A 50 percent chance of showers. Mostly cloudy, with a low around 39. North northwest wind 5 to 9 mph becoming light west northwest after midnight.
70% chance of rain Wednesday Wednesday... Showers likely, mainly after noon. Mostly cloudy, with a high near 60. Light west wind becoming northwest 9 to 14 mph in the morning. Winds could gust as high as 23 mph. Chance of precipitation is 70%.
20% chance of rain Wednesday Night Wednesday Night... A chance of showers. Mostly cloudy, with a low around 40. West wind 6 to 13 mph, with gusts as high as 22 mph.
20% chance of thunderstorms Thursday Thursday... A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 60.
10% chance of rain Thursday Night Thursday Night... A slight chance of showers before midnight. Mostly cloudy, with a low around 37.
20% chance of thunderstorms Friday Friday... A chance of showers and thunderstorms. Mostly cloudy, with a high near 64.
20% chance of rain Friday Night Friday Night... A chance of showers. Mostly cloudy, with a low around 39.
Thunderstorms on Saturday Saturday... Showers likely and possibly a thunderstorm. Partly sunny, with a high near 64.
Current Radar Image


Sun Almanac for Lewiston, Montana
Sunrise: 05:58 AM
Sunset: 8:50 PM
Civil Sunrise:05:23 AM
Civil Sunset: 9:25 PM
Nautical Sunrise: 04:39 AM
Nautical Sunset: 10:10 PM
Astro Sunrise: 03:46 AM
Astro Sunset: 11:03 PM
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