Climbing Forecast › I-90 Corridor › Exit 38 (Deception Crags)

I-90 CORRIDOR · METAMORPHIC

Exit 38 (Deception Crags) climbing conditions

Good — dry and climbable

Right now

Temp57°F
Wind2 mph
Gusts3 mph
Humidity91.5%
Rain 48hdry
Last rainNone recent

Assessment

No recent rain
Good friction temperature range for metamorphic
High humidity (91.5%) — metamorphic friction compromised, particularly for bouldering
Humidity 91.5% — potential fog/cloud, rock may be damp from condensation

7-day forecast

Scroll through each day — hourly detail is shown inline.

Today Thursday 20 August
Good
Temp59°F
Raindry
Wind2 mph
Gusts3 mph
Humidity85%
No recent rain
  • Metamorphic rock climbs well when dry; tree cover can slow drying
Time °F Rain Wind (mph) Gust Hum
10:00 57° dry 2 — 91.5%
11:00 56° dry 2 — 91.5%
12:00 56° dry 2 — 90.5%
13:00 56° dry 2 — 87.8%
14:00 58° dry 2 — 86.4%
15:00 64° dry 3 — 81.3%
16:00 70° dry 2 — 67.3%
17:00 74° dry 2 — 53.8%
18:00 76° dry 4 — 49.7%
19:00 78° dry 5 — 49.7%
20:00 79° dry 6 — 48.1%
21:00 80° dry 6 — 47.2%
Fri Friday 21 August
Good
Temp64°F
Raindry
Wind4 mph
Gusts—
Humidity74%
No recent rain
  • Metamorphic rock climbs well when dry; tree cover can slow drying
Time °F Rain Wind (mph) Gust Hum
06:00 62° dry 3 — 88.4%
07:00 61° dry 2 — 89.1%
08:00 61° dry 2 — 87.8%
09:00 61° dry 3 — 84.2%
10:00 61° dry 3 — 80.5%
11:00 61° dry 4 — 79.3%
12:00 60° dry 4 — 77.7%
13:00 61° dry 4 — 74.9%
14:00 64° dry 4 — 71.8%
15:00 69° dry 4 — 70.6%
16:00 74° dry 2 — 61.4%
17:00 78° dry 2 — 52.7%
18:00 80° dry 4 — 51.6%
19:00 81° dry 4 — 51.6%
20:00 82° dry 5 — 50%
21:00 82° dry 5 — 49.8%
Sat Saturday 22 August
Caution
Temp59°F
Raindry
Wind2 mph
Gusts—
Humidity96%
No recent rainHumidity 96% — potential fog
  • Metamorphic rock climbs well when dry; tree cover can slow drying
  • Damp air — friction edges may feel greasy
Time °F Rain Wind (mph) Gust Hum
06:00 67° dry 2 — 91.1%
07:00 65° dry 3 — 92.7%
08:00 62° dry 2 — 96.9%
09:00 62° dry 2 — 97.6%
10:00 61° dry 2 — 98.2%
11:00 59° dry 3 — 99%
12:00 58° dry 3 — 99.6%
13:00 58° dry 2 — 98.4%
14:00 58° dry 3 — 97.8%
15:00 61° dry 2 — 90.5%
16:00 62° dry 3 — 87.3%
17:00 63° dry 4 — 85.6%
18:00 63° dry 5 — 86.1%
19:00 64° dry 5 — 83.8%
20:00 64° dry 6 — 83%
21:00 65° dry 6 — 79.7%
Sun Sunday 23 August
Poor
Temp57°F
Rain0.02 in
Wind2 mph
Gusts—
Humidity93%
0.6mm rain forecastHumidity 93% — potential fog
  • Wet metamorphic rock is slick — some overhung walls stay climbable
  • Damp air — friction edges may feel greasy
Time °F Rain Wind (mph) Gust Hum
06:00 59° dry 2 — 86.9%
12:00 58° 0.02 in 3 — 93.2%
18:00 61° dry 4 — 83.5%
Mon Monday 24 August
Caution
Temp52°F
Raindry
Wind2 mph
Gusts—
Humidity94%
Should be dryHumidity 94% — potential fog
  • Metamorphic rock climbs well when dry; tree cover can slow drying
  • Damp air — friction edges may feel greasy
Time °F Rain Wind (mph) Gust Hum
06:00 57° dry 1 — 86.2%
12:00 52° dry 2 — 94.3%
18:00 75° dry 1 — 50.1%
Tue Tuesday 25 August
Good
Temp59°F
Rain0.00 in
Wind1 mph
Gusts—
Humidity82%
Should be dry
  • Metamorphic rock climbs well when dry; tree cover can slow drying
Time °F Rain Wind (mph) Gust Hum
06:00 61° dry 2 — 90.9%
12:00 59° dry 1 — 81.7%
18:00 72° dry 4 — 63.3%
Wed Wednesday 26 August
Caution
Temp59°F
Rain0.00 in
Wind2 mph
Gusts—
Humidity96%
Should be dryHumidity 96% — potential fog
  • Metamorphic rock climbs well when dry; tree cover can slow drying
  • Damp air — friction edges may feel greasy
Time °F Rain Wind (mph) Gust Hum
06:00 60° dry 1 — 96%
12:00 58° dry 2 — 96.4%
18:00 65° dry 3 — 75.3%
Thu Thursday 27 August
Caution
Temp55°F
Raindry
Wind—
Gusts—
Humidity91%
Should be dryHumidity 91% — potential fog
  • Metamorphic rock climbs well when dry; tree cover can slow drying
  • Damp air — friction edges may feel greasy
Time °F Rain Wind (mph) Gust Hum
06:00 57° dry 2 — 93.7%
12:00 56° dry 0 — 90.9%
18:00 69° dry 3 — 62%
Fri Friday 28 August
Caution
Temp54°F
Raindry
Wind—
Gusts—
Humidity95%
Should be dryHumidity 95% — potential fog
  • Metamorphic rock climbs well when dry; tree cover can slow drying
  • Damp air — friction edges may feel greasy
Time °F Rain Wind (mph) Gust Hum
06:00 58° dry 1 — 89%
12:00 54° dry 0 — 94.5%
18:00 66° dry 4 — 65.7%
Sat Saturday 29 August
Poor
Temp54°F
Raindry
Wind1 mph
Gusts—
Humidity97%
Should be dryHumidity 97% — likely fog/cloud
  • Metamorphic rock climbs well when dry; tree cover can slow drying
  • Damp air — friction edges may feel greasy
Time °F Rain Wind (mph) Gust Hum
06:00 56° dry 1 — 90.5%
12:00 54° dry 1 — 96.9%
18:00 65° dry 6 — 58.9%
Sun Sunday 30 August
Good
Temp66°F
Raindry
Wind7 mph
Gusts—
Humidity—
Should be dry
  • Metamorphic rock climbs well when dry; tree cover can slow drying
Exit 38 — officially Deception Crags — is Seattle's default sport-climbing destination, spread across three parking areas (Mount Washington, Deception Crags, Far Side) just off I-90 between North Bend and Snoqualmie Pass. Over 780 routes range from friendly 5.6 warm-ups to overhanging 5.13 testpieces on the region's characteristic volcanic metamorphic rock. Nevermind Wall is the after-work standard; Substation and Deception Wall the taller multi-pitch walls. The catch is Cascade weather: tree cover keeps several routes seeping for days after rain, and a persistent wet stripe through the middle of some walls stays damp except in high summer. Best conditions are May through October. Washington Discover Pass required at most trailheads — check Washington Climbers Coalition for current parking status.

About Exit 38 (Deception Crags)

Exit 38 — officially Deception Crags — is Seattle's default sport-climbing destination, spread across three parking areas (Mount Washington, Deception Crags, Far Side) just off I-90 between North Bend and Snoqualmie Pass. Over 780 routes range from friendly 5.6 warm-ups to overhanging 5.13 testpieces on the region's characteristic volcanic metamorphic rock. Nevermind Wall is the after-work standard; Substation and Deception Wall the taller multi-pitch walls. The catch is Cascade weather: tree cover keeps several routes seeping for days after rain, and a persistent wet stripe through the middle of some walls stays damp except in high summer. Best conditions are May through October. Washington Discover Pass required at most trailheads — check Washington Climbers Coalition for current parking status.

Region
I-90 Corridor
Rock type
metamorphic
Aspect
south-facing
Altitude
1184 ft
Exposure
medium
Seepage
high

Other crags in this region

Little Si