Sourdough, Montana Weather
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Weather Forecast for Sourdough, Montana : Sweet Grass County
Issued: 1:07 pm MDT May 11, 2025 Latitude: 45.901887 Longitude: -109.8143513 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Monday Tuesday Wednesday Thursday Friday Saturday Sunday
20% chance of thunderstorms on This Afternoon 20% chance of thunderstorms on Tonight Sunny on Monday 70% chance of rain on Tuesday 90% chance of rain on Wednesday 80% chance of thunderstorms on Thursday 40% chance of thunderstorms on Friday 70% chance of thunderstorms on Saturday Rain on Sunday
High: 69°F Low: 49°F High: 76°F High: 57°F High: 52°F High: 57°F High: 59°F High: 59°F High: 56°F
Low: 45°F Low: 41°F Low: 42°F Low: 38°F Low: 42°F Low: 41°F  
Thunderstorms Thunderstorms Sunny Rain Rain Thunderstorms Thunderstorms Thunderstorms Rain
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Current Conditions at
LIVINGSTON - (KLVM)
64°
Mostly Cloudy
as of 1:53 PM MDST
Rel. Humidity: 42%
Dew Point: 41°F
Visibility: 10 Miles
Pressure: 29.86 in.
Flight Rule: VFR
Wind Data
21 MPH
Gust: 43 MPH
200° South
Cloud Level(s): Broken at 12000ft
Current Conditions at
BILLINGS - (KBIL)
75°
Mostly Cloudy
as of 1:53 PM MDST
Rel. Humidity: 36%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 29.79 in.
Flight Rule: VFR
Wind Data
16 MPH
350° North
Cloud Level(s): Scattered at 12000ft, Broken at 20000ft
Current Conditions at
BOZEMAN - (KBZN)
68°
Clear
as of 1:56 PM MDST
Rel. Humidity: 52%
Dew Point: 50°F
Visibility: 10 Miles
Pressure: 29.82 in.
Flight Rule: VFR
Wind Data
5 MPH
040° Northeast
Cloud Level(s): Clear
Current Conditions at
LEWISTOWN - (KLWT)
66°
Clear
as of 1:54 PM MDST
Rel. Humidity: 52%
Dew Point: 48°F
Visibility: 10 Miles
Pressure: 29.78 in.
Flight Rule: VFR
Wind Data
6 MPH
Cloud Level(s): Clear
20% chance of thunderstorms This Afternoon This Afternoon... A 20 percent chance of showers and thunderstorms. Some of the storms could be severe. Partly sunny, with a steady temperature around 69. West southwest wind around 21 mph.
20% chance of thunderstorms Tonight Tonight... A 20 percent chance of showers and thunderstorms before midnight. Some of the storms could be severe. Mostly cloudy, then gradually becoming mostly clear, with a low around 49. Southwest wind 15 to 20 mph becoming south southeast 8 to 13 mph after midnight.
Sunny on Monday Monday... Sunny, with a high near 76. West southwest wind 10 to 15 mph increasing to 21 to 26 mph in the morning.
50% chance of rain Monday Night Monday Night... A 50 percent chance of showers. Mostly cloudy, with a low around 45. Northwest wind 11 to 18 mph.
70% chance of rain Tuesday Tuesday... Showers likely, mainly after noon. Mostly cloudy, with a high near 57. West wind 8 to 11 mph. Chance of precipitation is 70%.
90% chance of rain Tuesday Night Tuesday Night... Rain. Low around 41. North wind 10 to 13 mph. Chance of precipitation is 90%.
90% chance of rain Wednesday Wednesday... Rain. High near 52. West northwest wind 13 to 21 mph. Chance of precipitation is 90%.
60% chance of rain Wednesday Night Wednesday Night... Rain likely, mainly before midnight. Mostly cloudy, with a low around 42. West wind 15 to 17 mph. Chance of precipitation is 60%.
80% chance of thunderstorms Thursday Thursday... A chance of showers, then showers and possibly a thunderstorm after noon. High near 57. West wind 17 to 23 mph. Chance of precipitation is 80%.
20% chance of rain Thursday Night Thursday Night... A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 38. North northwest wind 10 to 15 mph becoming light and variable after midnight.
40% chance of thunderstorms Friday Friday... A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 59. Light west southwest wind becoming southwest 5 to 9 mph in the morning.
50% chance of rain Friday Night Friday Night... A 50 percent chance of showers. Mostly cloudy, with a low around 42. South southwest wind 5 to 10 mph.
70% chance of thunderstorms Saturday Saturday... Showers likely and possibly a thunderstorm. Partly sunny, with a high near 59. West southwest wind 5 to 11 mph becoming north northwest in the afternoon. Chance of precipitation is 70%.
60% chance of rain Saturday Night Saturday Night... Showers likely. Mostly cloudy, with a low around 41. South southeast wind 7 to 11 mph becoming northwest after midnight. Chance of precipitation is 60%.
Rain on Sunday Sunday... Showers likely. Mostly cloudy, with a high near 56. Northwest wind 9 to 16 mph.
Current Radar Image


Sun Almanac for Sourdough, Montana
Sunrise: 05:51 AM
Sunset: 8:40 PM
Civil Sunrise:05:17 AM
Civil Sunset: 9:14 PM
Nautical Sunrise: 04:33 AM
Nautical Sunset: 9:58 PM
Astro Sunrise: 03:41 AM
Astro Sunset: 10:50 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.