Jam Crack Route

Is Jam Crack Route open right now?

Closure in the area

There's a closure order in White River National Forest. It doesn't name Jam Crack Route, so check the source for the area it covers (2 listed).

• Green Mountain Reservoir and Ruedi boat ramps closed for the season

  Agency closure covering White River National Forest · USFS · White River National Forest

• Eagle-Thomasville (400), Burnt Mtn (506), plus NFSR 414 and 416 openings delayed to June 16

  Agency closure covering White River National Forest · USFS · White River National Forest

• FSR 314, Crystal River Road, open but be prepared for delays

  Agency alert covering White River National Forest · USFS · White River National Forest

• FSR 286, Radical Hill, is closed due to washouts and unsafe conditions

  Agency alert covering White River National Forest · USFS · White River National Forest

• White River National Forest lifting fire restrictions on Friday Sept. 25

  Agency alert covering White River National Forest · Order 2026 · USFS · White River National Forest

As of Oct 21, 5:55 pm MDT · Source: USFS · White River National Forest. Agencies don't list every closure — check before you go.

Best time to visit Jam Crack Route

Best months: June–July. 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

   31° / 1°

   12 wet

2. Feb

   33° / 4°

   11 wet

3. Mar

   41° / 10°

   11 wet

4. Apr

   47° / 18°

   11 wet

5. May

   58° / 26°

   10 wet

6. Jun

   69° / 33°

   9 wet

7. Jul

   75° / 38°

   12 wet

8. Aug

   73° / 37°

   13 wet

9. Sep

   66° / 30°

   10 wet

10. Oct

    54° / 21°

    8 wet

11. Nov

    41° / 11°

    9 wet

12. Dec

    32° / 3°

    11 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Dillon 1 E, CO, 5.8 mi away at 9,065 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.