| NWS Forecast for: Swan Lake MT Issued by: National Weather Service Missoula, MT Last Update: 2:01 pm MDT May 18, 2026 |  |
| Tonight: A 20 percent chance of rain before 9pm. Mostly cloudy, with a low around 37. Light and variable wind. Tuesday: A 40 percent chance of showers and thunderstorms, mainly between 2pm and 5pm. Partly sunny, with a high near 62. Calm wind becoming west southwest around 5 mph. Tuesday Night: A 20 percent chance of rain after 5am. Mostly cloudy, with a low around 42. Light south wind. Wednesday: A chance of rain, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 61. Calm wind. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. Wednesday Night: Rain likely before midnight. Mostly cloudy, with a low around 41. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible. Thursday: Mostly sunny, with a high near 65. Thursday Night: Partly cloudy, with a low around 43. Friday: Mostly sunny, with a high near 70. Friday Night: Partly cloudy, with a low around 44. Saturday: Mostly sunny, with a high near 71. Saturday Night: Partly cloudy, with a low around 48. Sunday: Mostly sunny, with a high near 72. Sunday Night: Partly cloudy, with a low around 48. Memorial Day: A slight chance of rain. Mostly sunny, with a high near 68. | |
| Swan Lake MT 47.94°N 113.87°W (Elev. 3576 ft) | |
Visit your local NWS office at: https://www.weather.gov/mso |
