⚠ Climbing above 4,800′ requires a permit Apr 1–Oct 31 ($15, capped at 100/day). Reserve at purchasepass.com — they sell out for weekends weeks in advance.
🏖️ Climbers Bivouac SNOTEL at 0" depth — route is likely melted out at the trailhead. The score still describes the freeze/thaw cycle aloft, but expect a long carry (or no snow at all).
🧠 Decision support, not a verdict. This score is a model — verify it against NWAC, the UW forecast, and your own read of the conditions before you commit to a tour. How it works →

Monday, Oct 26

0 /100
Corn Score

⛔ NOT CORN CONDITIONS: Rain detected: destroys corn surface, creates ice crust

🌙 40°F overnight low ☀️ 44°F daytime high 💨 18 mph wind ❄️ 0" new snow 🔄 0 streak
Confidence 99%
0–44 poor · 45–69 marginal · 70–100 good · methodology

How this score was built ⓘ

  • ⛔ Veto → 0
  • Refreeze (× 0.5) 🏔️ 27% route froze +8.9
  • Warming (× 0.3) +22.1
  • Streak bonus (capped at 20) +0
  • Pre-veto would have been 31.1 / 100

Why this score?

  • ⛔ Veto: Rain detected: destroys corn surface, creates ice crust — score forced to 0.

Condition Components ⓘ

🥶 Refreeze ⓘ

18/100

Air low: 40°F → surface ~40°F (radiative -1°F), Cloud: 84%, Wind: 5 mph, Dew: 36°F, Freezing level: ~7,338 ft (27% of route froze)

⚠ Climbers Bivouac above freezing — score boosted by route-frozen fraction (27% of route froze)
SNOTEL Crater Rim (NWS) NWS interpolated

☀️ Warming ⓘ

74/100

High: 44°F (slow softening)

NWS

🔄 Streak ⓘ

0 days

Consecutive freeze/thaw days

💨 Wind ⓘ

18 mph

Max wind (mph) at Crater Rim

⛔ Rain detected: destroys corn surface, creates ice crust

Sanity-check this ⓘ

7-Day Outlook ⓘ

Mon
Oct 26
0/100
Lo: 40°
Hi: 44°
🏔️ FL 7,338′
Day: Rain Showers Likely Night: Rain Showers 92% cl · 5 mph · dew 41°
high conf
tap for details
Tue
Oct 27
0/100
Lo: 42°
Hi: 43°
Day: Chance Rain Showers Night: Rain Showers 86% cl · 1 mph · dew 42°
high conf
tap for details
Wed
Oct 28
36/100
Lo: 39°
Hi: 39°
🏔️ FL 6,842′
Day: Rain Showers Night: Rain Showers 91% cl · 9 mph · dew 40°
med conf
tap for details
Thu
Oct 29
52/100
Lo: 37°
Hi: 39°
🏔️ FL 5,649′
Day: Light Rain Night: Rain Showers 95% cl · 2 mph · dew 37°
med conf
tap for details
Fri
Oct 30
58/100
Lo: 36°
Hi: 39°
🏔️ FL 5,600′
Day: Chance Rain And Snow Night: Chance Rain And Snow 81% cl · 2 mph · dew 36°
med conf
tap for details
Sat
Oct 31
75/100
Lo: 34°
Hi: 44°
🏔️ FL 4,655′
Day: Slight Chance Light Rain Night: Mostly Cloudy 63% cl · 3 mph · dew 34°
med conf
tap for details
Sun
Nov 1
80/100
Lo: 35°
Hi: 46°
🏔️ FL 5,523′
Day: Mostly Sunny Night: Mostly Cloudy 40% cl · 3 mph · dew 33°
med conf
tap for details

Freeze/Thaw History ⓘ

Recent Snowfall ⓘ

Day New Snow
Climbers Bivouac 3,440′		 Est. Crater Rim
~8,300′		 Source
confidence		 SWE Δ
in / 24h		 Precip
in / 24h		 Depth Low / High
Mon Oct 26 — — none high +0.00 0.3 0" 40° / 42°
Sun Oct 25 — — none high +0.00 0.9 0" 38° / 44°
Sat Oct 24 — — none high +0.00 — 0" 37° / 51°
Fri Oct 23 — — none high +0.00 0.1 0" 35° / 47°
Thu Oct 22 — — none high +0.00 0.1 0" 38° / 56°
Wed Oct 21 — — none high +0.00 — 0" 50° / 62°
Tue Oct 20 — — none high +0.00 — 0" 48° / 57°
Mon Oct 19 — — none high +0.00 — 0" 42° / 51°
Sun Oct 18 — — none high +0.00 — 0" 41° / 54°
Sat Oct 17 — — none high +0.00 0.2 0" 42° / 53°
Fri Oct 16 — — none high +0.00 — 0" 54° / 64°
Thu Oct 15 — — none high +0.00 — 0" 51° / 62°
Wed Oct 14 — — none high +0.00 — 0" 46° / 59°
Tue Oct 13 — — none high +0.00 — 0" 40° / 50°
Mon Oct 12 — — — low — — 0" 41° / 51°

St. Helens Webcams ⓘ view gallery →

Mt. St. Helens — USGS Guacamole Camera on 2026-10-26
Mt. St. Helens — USGS Guacamole Camera 2026-10-26

Latest Observation

Air Temp 40.3°F
Snow Depth 0.0"
SWE 0.0"
Time 2026-10-26T06:00

Forecasts View archive →

No NWAC forecast data yet.

No UW forecast data yet.

Data Collection

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