Climbing Forecast › Maine › Katahdin (South Basin)

MAINE · GRANITE

Katahdin (South Basin) climbing conditions

Poor — wet, too windy or closed

Right now

Temp38°F
Wind10 mph
Gusts16 mph
Humidity99.8%
Rain 48h0.09 in
Last rain1h ago

Assessment

6mm rain forecast
Humidity 98% — likely fog/cloud
Cold — excellent friction but watch for damp seeping features
High humidity (99.8%) — granite friction compromised, particularly for bouldering

Drying Time

6% dry · 11-22h to dry

7-day forecast

Scroll through each day — hourly detail is shown inline.

Today Monday 5 October
Poor
Temp39°F
Rain0.2 in
Wind11 mph
Gusts16 mph
Humidity98%
6mm rain forecastHumidity 98% — likely fog/cloud
Time °F Rain Wind (mph) Gust Hum
06:00 39° 0.01 in 11 — 99.8%
07:00 38° 0.01 in 12 — 99.8%
08:00 38° 0.02 in 11 — 99.8%
09:00 38° 0.02 in 11 — 99.9%
10:00 38° 0.02 in 12 — 99.9%
11:00 38° 0.03 in 11 — 99.8%
12:00 38° 0.05 in 11 — 99.4%
13:00 39° 0.02 in 10 — 99.1%
14:00 40° 0.01 in 9 — 97.9%
15:00 40° 0.01 in 9 — 99.6%
16:00 42° 0.01 in 12 — 89.3%
17:00 43° dry 12 — 70.8%
18:00 45° dry 13 — 59.7%
19:00 44° dry 13 — 55.4%
20:00 42° dry 13 — 56.5%
21:00 39° dry 13 — 62.7%
Tue Tuesday 6 October
Caution
Temp32°F
Raindry
Wind20 mph
Gusts—
Humidity69%
Should be dryWindy — 32 km/h, gusts 0 km/h
  • Very windy — exposed routes will be unpleasant
  • Breezy — helps drying
Time °F Rain Wind (mph) Gust Hum
06:00 31° dry 17 — 71.2%
07:00 30° dry 17 — 72%
08:00 30° dry 19 — 73%
09:00 30° dry 18 — 73.7%
10:00 30° dry 18 — 73.8%
11:00 30° dry 17 — 74.8%
12:00 31° dry 19 — 73.9%
13:00 32° dry 22 — 71.2%
14:00 33° dry 22 — 65.3%
15:00 34° dry 21 — 64.3%
16:00 35° dry 20 — 61.1%
17:00 35° dry 19 — 58.7%
18:00 36° dry 18 — 56.1%
19:00 36° dry 19 — 55.3%
20:00 36° dry 18 — 54.4%
21:00 35° dry 18 — 57.5%
Wed Wednesday 7 October
Good
Temp30°F
Rain0.00 in
Wind7 mph
Gusts—
Humidity70%
Should be dry
Time °F Rain Wind (mph) Gust Hum
06:00 27° dry 12 — 73.5%
07:00 27° dry 11 — 74.4%
08:00 26° dry 10 — 75.4%
09:00 26° dry 9 — 76.6%
10:00 24° dry 8 — 80.7%
11:00 24° dry 6 — 84.9%
12:00 28° dry 6 — 76.2%
13:00 32° dry 6 — 66.9%
14:00 35° dry 6 — 60.5%
15:00 36° 0.00 in 6 — 60%
16:00 38° dry 8 — 59.4%
17:00 40° dry 9 — 55.7%
18:00 41° dry 10 — 54.7%
Thu Thursday 8 October
Poor
Temp36°F
Rain0.07 in
Wind3 mph
Gusts—
Humidity99%
1.7mm rain forecastHumidity 99% — likely fog/cloud
Time °F Rain Wind (mph) Gust Hum
06:00 33° 0.05 in 4 — 94.4%
12:00 36° 0.00 in 3 — 98.9%
18:00 48° dry 12 — 51.6%
Fri Friday 9 October
Caution
Temp34°F
Raindry
Wind9 mph
Gusts—
Humidity88%
Should be dryHumidity 88% — potential fog
Time °F Rain Wind (mph) Gust Hum
06:00 34° dry 7 — 97.1%
12:00 34° dry 9 — 87.8%
18:00 40° dry 13 — 52.6%
Sat Saturday 10 October
Poor
Temp30°F
Rain0.02 in
Wind3 mph
Gusts—
Humidity98%
0.5mm rain forecastHumidity 98% — likely fog/cloud
Time °F Rain Wind (mph) Gust Hum
06:00 27° 0.01 in 4 — 83.8%
12:00 31° 0.01 in 3 — 97.9%
18:00 41° dry 10 — 59.8%
Sun Sunday 11 October
Good
Temp30°F
Raindry
Wind3 mph
Gusts—
Humidity73%
Should be dry
Time °F Rain Wind (mph) Gust Hum
06:00 25° dry 3 — 84.5%
12:00 31° dry 3 — 72.8%
18:00 47° dry 7 — 49.4%
Mon Monday 12 October
Caution
Temp45°F
Raindry
Wind7 mph
Gusts—
Humidity85%
Should be dryHumidity 85% — potential fog
Time °F Rain Wind (mph) Gust Hum
06:00 44° dry 10 — 72.3%
12:00 45° dry 7 — 84.6%
18:00 61° dry 6 — 54.4%

About Katahdin (South Basin)

Mount Katahdin's South Basin holds Maine's biggest alpine climbing — long granite ridges and buttresses on the Katahdin Granite in the South Basin cirque of Baxter State Park. The Armadillo (5.7, six pitches) is the classic must-tick and one of the finest 5.7 multi-pitches in the East; Flatiron (5.8, two pitches) rounds out the summer rock list. Waterfall Gully (WI4, two pitches) and the multi-pitch Cilley-Barber (WI4, seven pitches) are the winter ice classics. Baxter State Park regulates access strictly: a Day-Use Parking Reservation (DUPR) at $5 is required for Roaring Brook (the South Basin trailhead) with a $15 out-of-state vehicle entry fee on top; reservations open four months in advance at 6 AM ET. Technical climbers MUST register at the Roaring Brook ranger station where rangers inspect gear (a #4 Camalot is required for The Armadillo). Winter climbing needs a separate permit. Bolting, gardening, chipping, and glueing are prohibited. July through early September is the reliable rock window; alpine weather changes fast and afternoons often storm out.

Region
Maine
Rock type
Granite
Aspect
south-east-facing
Altitude
3281 ft
Exposure
high
Seepage
medium

Other crags in this region

Shagg CragClifton / Eagle Bluff