Montana · Lake fishing · Thompson Falls

Sylvan Lake

Jul–Sep
best months

Is Sylvan Lake open right now?

Closure in the area

There's a closure order in Kootenai National Forest. It doesn't name Sylvan Lake, so check the source for the area it covers.

As of · Source: USFS · Kootenai National Forest. Agencies don't list every closure — check before you go.

Sylvan Lake is a 5-acre lake near Thompson Falls, Montana, at about 5,519 feet. It is managed by the U.S. Forest Service.

Local outfitters

Not on Roamze yet. Their page has how to reach them.

  • Best time to go · Jul–Sep

    Best time to visit Sylvan Lake

    Best months: July–September. Best months have typical highs of 55–85 °F, lows of 30 °F or warmer (32 °F where the station doesn't record snow), at most one snowy day and no more than 12 wet days.

    1. Jan

      28° / 19°

      19 wet

    2. Feb

      28° / 19°

      17 wet

    3. Mar

      34° / 22°

      19 wet

    4. Apr

      40° / 27°

      17 wet

    5. May

      50° / 36°

      15 wet

    6. Jun

      58° / 42°

      13 wet

    7. Jul

      70° / 52°

      6 wet

    8. Aug

      69° / 51°

      6 wet

    9. Sep

      59° / 44°

      8 wet

    10. Oct

      44° / 32°

      13 wet

    11. Nov

      32° / 23°

      17 wet

    12. Dec

      27° / 18°

      18 wet

    Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Mullan Pass Vor/Dme, ID, 27.7 mi away at 6,028 ft. The station sits about 500 ft higher than this place, so expect it a little warmer here. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.