Grimy Slimy

Is Grimy Slimy open right now?

Closure in the area

There's a closure order in Mountaintop Ranger District. It doesn't name Grimy Slimy, so check the source for the area it covers.

• Radford Fire Closure Area

  Agency closure covering Mountaintop Ranger District · Order 05-12-52-24-06 · USFS · Mountaintop Ranger District

• Safety Alert - Falling Rocks at Bonita Falls

  Agency alert covering San Bernardino National Forest · USFS · San Bernardino National Forest

• Fire Restrictions

  Agency alert covering San Bernardino National Forest · Order 05-12-00-26-05 · USFS · San Bernardino National Forest

As of Oct 23, 8:25 pm PDT · Source: USFS · Mountaintop Ranger District. Agencies don't list every closure — check before you go.

Best time to visit Grimy Slimy

Best months: May–October. 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

   46° / 24°

   6 wet

2. Feb

   46° / 24°

   6 wet

3. Mar

   51° / 27°

   6 wet

4. Apr

   57° / 31°

   4 wet

5. May

   66° / 37°

   2 wet

6. Jun

   75° / 43°

   1 wet

7. Jul

   80° / 50°

   2 wet

8. Aug

   79° / 49°

   3 wet

9. Sep

   73° / 44°

   2 wet

10. Oct

    63° / 35°

    2 wet

11. Nov

    53° / 28°

    3 wet

12. Dec

    46° / 24°

    6 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Big Bear Lake, CA, 4.7 mi away at 6,753 ft. The station sits about 600 ft lower than this place, so expect it a little cooler here. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.