Climbing Forecast › Bellingham › Chuckanut (Lost Ledge)

BELLINGHAM · SANDSTONE

Chuckanut (Lost Ledge) climbing conditions

Good — dry and climbable

Right now

Temp59°F
Wind3 mph
Gusts5 mph
Humidity81.9%
Rain 48hdry
Last rainNone recent

Assessment

No recent rain

7-day forecast

Scroll through each day — hourly detail is shown inline.

Today Thursday 20 August
Good
Temp59°F
Raindry
Wind3 mph
Gusts5 mph
Humidity87%
No recent rain
  • Hard sandstone climbs well when dry
Time °F Rain Wind (mph) Gust Hum
10:00 59° dry 3 — 81.9%
11:00 59° dry 3 — 83.6%
12:00 59° dry 2 — 84.9%
13:00 58° dry 3 — 89.1%
14:00 58° dry 2 — 90%
15:00 59° dry 3 — 90.5%
16:00 62° dry 3 — 87.8%
17:00 65° dry 4 — 85.2%
18:00 66° dry 5 — 85.7%
19:00 68° dry 6 — 85.2%
20:00 69° dry 7 — 82.3%
21:00 70° dry 7 — 81.8%
Fri Friday 21 August
Good
Temp61°F
Raindry
Wind3 mph
Gusts—
Humidity80%
No recent rain
  • Hard sandstone climbs well when dry
Time °F Rain Wind (mph) Gust Hum
06:00 62° dry 2 — 76.9%
07:00 61° dry 3 — 78.7%
08:00 61° dry 3 — 76.8%
09:00 61° dry 4 — 76.8%
10:00 60° dry 3 — 77.8%
11:00 60° dry 3 — 80.3%
12:00 59° dry 4 — 81.3%
13:00 60° dry 5 — 81.3%
14:00 60° dry 2 — 82.1%
15:00 61° dry 2 — 79.1%
16:00 65° dry 2 — 75.2%
17:00 68° dry 4 — 75.1%
18:00 70° dry 5 — 76.6%
19:00 72° dry 6 — 76.8%
20:00 74° dry 7 — 73.6%
21:00 74° dry 8 — 72.5%
Sat Saturday 22 August
Poor
Temp57°F
Rain0.02 in
Wind16 mph
Gusts—
Humidity93%
0.6mm rain forecastDo not climb wet sandstoneHumidity 93% — potential fog
  • Wet sandstone is slippery — let the rock dry before leading
  • Breezy — helps drying
Time °F Rain Wind (mph) Gust Hum
06:00 63° dry 16 — 80.4%
07:00 62° dry 15 — 83%
08:00 60° dry 15 — 85.8%
09:00 59° dry 14 — 89.8%
10:00 58° 0.01 in 15 — 90.7%
11:00 57° dry 17 — 93.4%
12:00 56° dry 15 — 95.1%
13:00 56° dry 15 — 96.2%
14:00 56° dry 14 — 97.2%
15:00 58° dry 14 — 91.8%
16:00 59° dry 18 — 86.3%
17:00 61° dry 16 — 85.2%
18:00 62° 0.01 in 15 — 82.1%
19:00 63° 0.00 in 11 — 80.7%
20:00 64° dry 11 — 81.9%
21:00 64° dry 14 — 82.7%
Sun Sunday 23 August
Poor
Temp57°F
Rain0.02 in
Wind9 mph
Gusts—
Humidity93%
0.5mm rain forecastDo not climb wet sandstoneHumidity 93% — potential fog
  • Wet sandstone is slippery — let the rock dry before leading
Time °F Rain Wind (mph) Gust Hum
06:00 58° 0.01 in 6 — 91.1%
12:00 57° 0.01 in 9 — 92.5%
18:00 60° dry 7 — 87.4%
Mon Monday 24 August
Caution
Temp55°F
Raindry
Wind6 mph
Gusts—
Humidity91%
Should be drySandstone may still hold subsurface moisture
  • Hard sandstone climbs well when dry
Time °F Rain Wind (mph) Gust Hum
06:00 58° dry 4 — 86.1%
12:00 56° dry 6 — 90.8%
18:00 64° dry 6 — 83.3%
Tue Tuesday 25 August
Caution
Temp57°F
Raindry
Wind7 mph
Gusts—
Humidity94%
Should be drySandstone may still hold subsurface moistureHumidity 94% — potential fog
  • Hard sandstone climbs well when dry
Time °F Rain Wind (mph) Gust Hum
06:00 60° dry 6 — 87.7%
12:00 57° dry 7 — 94.4%
18:00 65° dry 10 — 78.5%
Wed Wednesday 26 August
Poor
Temp55°F
Rain0.02 in
Wind11 mph
Gusts—
Humidity93%
0.4mm rain forecastDo not climb wet sandstoneHumidity 93% — potential fog
  • Wet sandstone is slippery — let the rock dry before leading
Time °F Rain Wind (mph) Gust Hum
06:00 57° dry 11 — 91.8%
12:00 56° dry 11 — 93.2%
18:00 60° dry 4 — 85.6%
Thu Thursday 27 August
Poor
Temp55°F
Raindry
Wind5 mph
Gusts—
Humidity99%
Should be drySandstone may still hold subsurface moistureHumidity 99% — likely fog/cloud
  • Hard sandstone climbs well when dry
Time °F Rain Wind (mph) Gust Hum
06:00 58° dry 3 — 92.7%
12:00 55° dry 5 — 98.9%
18:00 62° dry 5 — 84.6%
Fri Friday 28 August
Caution
Temp55°F
Raindry
Wind11 mph
Gusts—
Humidity96%
Should be drySandstone may still hold subsurface moistureHumidity 96% — potential fog
  • Hard sandstone climbs well when dry
Time °F Rain Wind (mph) Gust Hum
06:00 57° dry 10 — 91.1%
12:00 55° dry 11 — 95.8%
18:00 62° dry 8 — 80.1%
Sat Saturday 29 August
Caution
Temp54°F
Raindry
Wind13 mph
Gusts—
Humidity94%
Should be dryHumidity 94% — potential fog
  • Hard sandstone climbs well when dry
  • Breezy — helps drying
Time °F Rain Wind (mph) Gust Hum
06:00 56° dry 11 — 85.8%
12:00 54° dry 13 — 93.6%
18:00 61° dry 11 — 81.9%
Sun Sunday 30 August
Good
Temp63°F
Raindry
Wind8 mph
Gusts—
Humidity—
Should be dry
  • Hard sandstone climbs well when dry
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.
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.

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