Climbing Forecast › Bellingham › Chuckanut (Lost Ledge)

BELLINGHAM · SANDSTONE

Chuckanut (Lost Ledge) climbing conditions

Caution — drying out or marginal

Right now

Temp54°F
Wind7 mph
Gusts11 mph
Humidity94%
Rain 48hdry
Last rainNone recent

Assessment

No recent rain
Humidity 93% — potential fog
Humidity 94% — potential fog/cloud, rock may be damp from condensation
Check sandstone is genuinely dry — condensation can wet the surface

7-day forecast

Scroll through each day — hourly detail is shown inline.

Today Sunday 4 October
Caution
Temp54°F
Raindry
Wind3 mph
Gusts11 mph
Humidity93%
No recent rainHumidity 93% — potential fog
  • Check rock is fully dry before climbing
Time °F Rain Wind (mph) Gust Hum
06:00 54° dry 6 — 94.7%
07:00 54° dry 5 — 94.8%
08:00 54° dry 4 — 95.2%
09:00 53° dry 4 — 94.4%
10:00 54° dry 4 — 93.2%
11:00 53° dry 3 — 93.2%
12:00 53° dry 4 — 93%
13:00 53° dry 4 — 92.2%
14:00 53° dry 3 — 92.8%
15:00 53° dry 2 — 93.5%
16:00 54° dry 3 — 93%
17:00 56° dry 2 — 91.8%
18:00 58° dry 2 — 90.2%
19:00 61° dry 2 — 89.2%
20:00 62° dry 4 — 89.2%
21:00 62° dry 4 — 88.7%
Mon Monday 5 October
Good
Temp52°F
Raindry
Wind16 mph
Gusts—
Humidity90%
No recent rain
  • Check rock is fully dry before climbing
  • Breezy — helps drying
Time °F Rain Wind (mph) Gust Hum
06:00 53° dry 15 — 91.9%
07:00 53° dry 16 — 92.7%
08:00 53° dry 16 — 91.8%
09:00 53° dry 16 — 88.3%
10:00 51° dry 16 — 88.1%
11:00 51° dry 16 — 86.7%
12:00 51° dry 16 — 88.9%
13:00 51° dry 16 — 91%
14:00 52° dry 16 — 91.6%
15:00 53° dry 17 — 91.2%
16:00 54° dry 16 — 91.4%
17:00 55° dry 15 — 90.7%
18:00 56° dry 14 — 90.9%
19:00 57° dry 12 — 91.2%
20:00 58° dry 10 — 91.1%
21:00 59° dry 7 — 89.9%
Tue Tuesday 6 October
Caution
Temp50°F
Raindry
Wind6 mph
Gusts—
Humidity96%
No recent rainHumidity 96% — potential fog
  • Check rock is fully dry before climbing
Time °F Rain Wind (mph) Gust Hum
06:00 49° dry 3 — 100%
07:00 50° dry 2 — 99.7%
08:00 51° dry 4 — 99%
09:00 51° dry 3 — 98.4%
10:00 51° dry 2 — 99.3%
11:00 50° dry 2 — 99.1%
12:00 50° dry 5 — 96.2%
13:00 50° dry 5 — 95.3%
14:00 50° dry 7 — 93.7%
15:00 51° dry 9 — 92.8%
16:00 51° dry 7 — 93.3%
17:00 52° dry 8 — 93.5%
18:00 54° dry 8 — 92.3%
Wed Wednesday 7 October
Poor
Temp48°F
Raindry
Wind4 mph
Gusts—
Humidity99%
No recent rainHumidity 99% — likely fog/cloud
  • Check rock is fully dry before climbing
Time °F Rain Wind (mph) Gust Hum
06:00 52° dry 3 — 89.8%
12:00 49° dry 4 — 98.9%
18:00 55° dry 2 — 89.5%
Thu Thursday 8 October
Poor
Temp50°F
Raindry
Wind1 mph
Gusts—
Humidity99%
No recent rainHumidity 99% — likely fog/cloud
  • Check rock is fully dry before climbing
Time °F Rain Wind (mph) Gust Hum
06:00 52° dry 4 — 89.9%
12:00 49° dry 1 — 99%
18:00 53° dry 1 — 92.6%
Fri Friday 9 October
Poor
Temp52°F
Rain0.05 in
Wind10 mph
Gusts—
Humidity90%
1.3mm rain forecastDo not climb wet sandstone
  • Do not climb — wet soft sandstone is damaged by climbing
Time °F Rain Wind (mph) Gust Hum
06:00 51° dry 14 — 97.2%
12:00 52° 0.05 in 10 — 90.2%
18:00 53° 0.00 in 12 — 85.3%
Sat Saturday 10 October
Poor
Temp46°F
Rain0.01 in
Wind6 mph
Gusts—
Humidity91%
Only 24h since rain — needs ~50h
  • Do not climb — wet soft sandstone is damaged by climbing
Time °F Rain Wind (mph) Gust Hum
06:00 47° dry 10 — 92.5%
12:00 47° dry 6 — 90.7%
18:00 52° dry 15 — 75.4%
Sun Sunday 11 October
Caution
Temp46°F
Raindry
Wind15 mph
Gusts—
Humidity52%
Should be drySandstone may still hold subsurface moisture
  • Check rock is fully dry before climbing
  • Breezy — helps drying
Time °F Rain Wind (mph) Gust Hum
06:00 50° dry 14 — 47.6%
12:00 46° dry 15 — 51.8%
18:00 49° dry 18 — 48.2%
Access
Community rule: wait at least 2–3 days after summer rain before climbing, and 2–3 weeks after winter — 'just because the road is dry does not mean the boulders are.' A wet climb here breaks holds and shortens the life of every route.

About Chuckanut (Lost Ledge)

Lost Ledge is Bellingham's home bouldering area — a cluster of Chuckanut Formation sandstone boulders nestled in old-growth forest in Larrabee State Park, along the Chuckanut Mountain escarpment ten miles south of downtown Bellingham. The area holds 63 problems from V0 to V6, split across Main Area, Main Trail Upper, and the newer Pandemic Boulders. The catch is the sandstone itself: this is soft, wet-sensitive rock that damages permanently under load when saturated. July through September is the reliable season. Washington Discover Pass required.

Region
Bellingham
Rock type
Sandstone
Aspect
mixed-facing
Altitude
1407 ft
Exposure
low
Seepage
high