Sigmoidoscope

Is Sigmoidoscope open right now?

Closure in the area

There's a closure order in Mountaintop Ranger District. It doesn't name Sigmoidoscope, 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, 8:00 pm PDT · Source: USFS · Mountaintop Ranger District. Agencies don't list every closure — check before you go.

Best time to visit Sigmoidoscope

Best months: April–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

   44° / 29°

   6 wet · 1 snow

2. Feb

   45° / 30°

   6 wet · 1 snow

3. Mar

   52° / 32°

   6 wet · 1 snow

4. Apr

   60° / 36°

   4 wet · 1 snow

5. May

   67° / 41°

   2 wet

6. Jun

   76° / 49°

   1 wet

7. Jul

   81° / 57°

   1 wet

8. Aug

   82° / 57°

   1 wet

9. Sep

   74° / 52°

   1 wet

10. Oct

    63° / 43°

    2 wet

11. Nov

    52° / 34°

    3 wet

12. Dec

    43° / 29°

    5 wet · 1 snow

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Lake Arrowhead, CA, 4.7 mi away at 5,205 ft. Source: NOAA NCEI U.S. Climate Normals 1991–2020.