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
Wind8 mph
Gusts11 mph
Humidity74.8%
Rain 48hdry
Last rainNone recent

Assessment

No recent rain
Good friction temperature range for metamorphic

7-day forecast

Scroll through each day — hourly detail is shown inline.

Today Sunday 4 October
Good
Temp54°F
Raindry
Wind7 mph
Gusts11 mph
Humidity77%
No recent rain
  • Metamorphic rock climbs well when dry; tree cover can slow drying
Time °F Rain Wind (mph) Gust Hum
06:00 57° dry 8 — 74.3%
07:00 56° dry 7 — 76.6%
08:00 55° dry 7 — 78.9%
09:00 54° dry 7 — 79.9%
10:00 54° dry 7 — 78.7%
11:00 53° dry 7 — 78.5%
12:00 52° dry 7 — 78.8%
13:00 52° dry 7 — 78.8%
14:00 51° dry 7 — 79.7%
15:00 53° dry 7 — 78%
16:00 61° dry 6 — 66.7%
17:00 69° dry 5 — 55.5%
18:00 73° dry 6 — 43.8%
19:00 76° dry 4 — 40.4%
20:00 76° dry 4 — 43.1%
21:00 75° dry 4 — 52.1%
Mon Monday 5 October
Caution
Temp52°F
Raindry
Wind2 mph
Gusts—
Humidity91%
No recent rainHumidity 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 54° dry 2 — 89.2%
07:00 54° dry 1 — 88.9%
08:00 53° dry 2 — 91.2%
09:00 52° dry 2 — 93.2%
10:00 50° dry 2 — 94.5%
11:00 50° dry 2 — 94.7%
12:00 50° dry 1 — 93.9%
13:00 51° dry 1 — 91.8%
14:00 51° dry 1 — 89.9%
15:00 53° dry 2 — 89%
16:00 59° dry 2 — 82.2%
17:00 63° dry 2 — 73.6%
18:00 65° dry 3 — 72.3%
19:00 66° dry 4 — 69%
20:00 67° dry 5 — 67.2%
21:00 66° dry 7 — 71.5%
Tue Tuesday 6 October
Caution
Temp48°F
Raindry
Wind4 mph
Gusts—
Humidity91%
No recent rainHumidity 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 52° dry 4 — 99.6%
07:00 52° dry 4 — 99.1%
08:00 51° dry 4 — 99%
09:00 50° dry 4 — 98.6%
10:00 49° dry 4 — 98.1%
11:00 48° dry 5 — 96.4%
12:00 47° dry 4 — 95.1%
13:00 47° dry 4 — 93.5%
14:00 47° dry 4 — 91.4%
15:00 49° dry 4 — 88.3%
16:00 56° dry 3 — 77.5%
17:00 61° dry 1 — 67.2%
18:00 64° dry 2 — 56.5%
Wed Wednesday 7 October
Poor
Temp43°F
Raindry
Wind1 mph
Gusts—
Humidity100%
No recent rainHumidity 100% — 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 49° dry 1 — 97.7%
12:00 42° dry 1 — 99.8%
18:00 64° dry 2 — 59.9%
Thu Thursday 8 October
Good
Temp50°F
Raindry
Wind2 mph
Gusts—
Humidity82%
No recent rain
  • Metamorphic rock climbs well when dry; tree cover can slow drying
Time °F Rain Wind (mph) Gust Hum
06:00 51° dry 3 — 89.7%
12:00 50° dry 2 — 81.9%
18:00 67° dry 3 — 55%
Fri Friday 9 October
Poor
Temp50°F
Rain0.09 in
Wind4 mph
Gusts—
Humidity91%
2.4mm rain forecastHumidity 91% — 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 53° dry 1 — 91.5%
12:00 50° 0.04 in 4 — 90.8%
18:00 52° 0.06 in 7 — 99.2%
Sat Saturday 10 October
Poor
Temp45°F
Rain0.1 in
Wind2 mph
Gusts—
Humidity95%
2.9mm rain forecastHumidity 95% — 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 46° 0.01 in 3 — 97%
12:00 45° dry 2 — 95.3%
18:00 48° 0.01 in 3 — 88.4%
Sun Sunday 11 October
Caution
Temp39°F
Rain0.00 in
Wind7 mph
Gusts—
Humidity70%
Drying — 18h since rain
  • Metamorphic rock climbs well when dry; tree cover can slow drying
Time °F Rain Wind (mph) Gust Hum
06:00 41° dry 3 — 92.4%
12:00 40° dry 7 — 70%
18:00 48° dry 12 — 36.5%

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