Fallon, Montana Weather
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Weather Forecast for Fallon, Montana : Prairie County
Issued: 10:04 am MDT May 11, 2025 Latitude: 46.8355635 Longitude: -105.1194222 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Monday Tuesday Wednesday Thursday Friday Saturday
30% chance of rain on Today 30% chance of thunderstorms on Tonight Sunny on Monday Sunny on Tuesday 90% chance of rain on Wednesday 70% chance of rain on Thursday Mostly Sunny on Friday 20% chance of rain on Saturday
High: 95°F Low: 57°F High: 93°F High: 78°F High: 59°F High: 61°F High: 65°F High: 68°F
Low: 56°F Low: 49°F Low: 44°F Low: 39°F Low: 41°F  
Rain Thunderstorms Sunny Sunny Rain Rain Mostly Sunny Rain
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30% chance of rain Today Today... A 30 percent chance of showers, mainly after 5pm. Mostly sunny, with a high near 95. West southwest wind 8 to 11 mph.
30% chance of thunderstorms Tonight Tonight... A chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 57. South southwest wind 5 to 10 mph becoming light and variable after midnight. Chance of precipitation is 30%.
Sunny on Monday Monday... Sunny, with a high near 93. Light south southwest wind becoming west southwest 8 to 13 mph in the morning. Winds could gust as high as 23 mph.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 56. South southwest wind 9 to 13 mph becoming north northeast in the evening. Winds could gust as high as 25 mph.
Sunny on Tuesday Tuesday... Sunny, with a high near 78. North northwest wind 10 to 13 mph, with gusts as high as 22 mph.
70% chance of rain Tuesday Night Tuesday Night... Showers likely, mainly after midnight. Mostly cloudy, with a low around 49. North wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 70%.
90% chance of rain Wednesday Wednesday... Showers. High near 59. North wind 9 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.
70% chance of thunderstorms Wednesday Night Wednesday Night... Showers likely and possibly a thunderstorm. Cloudy, with a low around 44. Northwest wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 70%.
70% chance of rain Thursday Thursday... Showers likely. Mostly cloudy, with a high near 61. Northwest wind 13 to 20 mph, with gusts as high as 34 mph. Chance of precipitation is 70%.
20% chance of rain Thursday Night Thursday Night... A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 39. West northwest wind 6 to 16 mph, with gusts as high as 26 mph.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 65. Northwest wind 6 to 10 mph, with gusts as high as 18 mph.
10% chance of rain Friday Night Friday Night... A slight chance of showers. Partly cloudy, with a low around 41.
20% chance of rain Saturday Saturday... A chance of showers. Mostly sunny, with a high near 68.
Sun Almanac for Fallon, Montana
Sunrise: 05:30 AM
Sunset: 8:24 PM
Civil Sunrise:04:54 AM
Civil Sunset: 8:59 PM
Nautical Sunrise: 04:09 AM
Nautical Sunset: 9:45 PM
Astro Sunrise: 03:15 AM
Astro Sunset: 10:39 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.