Right now

Temp34°F

Wind8 mph

Gusts12 mph

Humidity93.1%

Rain 48h0.02 in

Last rain16h ago

Assessment

1.6mm rain forecast

Cold — excellent friction but watch for damp seeping features

High humidity (93.1%) — gneiss friction compromised, particularly for bouldering

Humidity 93.1% — potential fog/cloud, rock may be damp from condensation

Pegmatite bands cutting the gneiss are shattered and flaky in places — test suspect blocks and beware of pulled crystals on the pink bands

7-day forecast

Scroll through each day — hourly detail is shown inline.

Today Sunday 25 October

Poor

Temp46°F

Rain0.06 in

Wind6 mph

Gusts12 mph

Humidity64%

1.6mm rain forecast

Good conditions for gneiss
Wet gneiss is slick — let the rock dry before leading

Time °F Rain Wind (mph) Gust Hum

06:00 36° dry 9 — 90.8%

07:00 35° dry 9 — 89.6%

08:00 36° dry 9 — 88.7%

09:00 42° dry 8 — 77.6%

10:00 46° dry 6 — 67.2%

11:00 49° 0.00 in 7 — 55.4%

12:00 49° 0.02 in 6 — 56.3%

13:00 47° 0.02 in 7 — 66.8%

14:00 45° 0.01 in 6 — 74.2%

15:00 46° dry 4 — 65.3%

16:00 47° 0.01 in 6 — 59.3%

17:00 44° dry 4 — 68%

18:00 42° dry 4 — 78.4%

19:00 39° dry 3 — 86.8%

20:00 38° dry 3 — 89.6%

21:00 37° dry 2 — 90.2%

Mon Monday 26 October

Good

Temp48°F

Raindry

Wind5 mph

Gusts—

Humidity48%

Should be dry

Good conditions for gneiss
Gneiss climbs well when dry; foliation planes can hold moisture on shaded aspects

Time °F Rain Wind (mph) Gust Hum

06:00 33° dry 3 — 87.5%

07:00 32° dry 4 — 87.1%

08:00 33° dry 4 — 86.3%

09:00 39° dry 4 — 85.9%

10:00 43° dry 2 — 60.4%

11:00 46° dry 4 — 52.8%

12:00 48° dry 5 — 48.6%

13:00 50° dry 6 — 44.7%

14:00 51° dry 6 — 43.5%

15:00 51° dry 6 — 43.8%

16:00 51° dry 7 — 44.7%

17:00 50° dry 6 — 47.3%

18:00 45° dry 3 — 62%

19:00 42° dry 3 — 66%

20:00 39° dry 4 — 75.1%

21:00 35° dry 4 — 82.2%

Tue Tuesday 27 October

Good

Temp52°F

Raindry

Wind6 mph

Gusts—

Humidity36%

Should be dry

Good conditions for gneiss
Gneiss climbs well when dry; foliation planes can hold moisture on shaded aspects

Time °F Rain Wind (mph) Gust Hum

06:00 31° dry 7 — 81.5%

07:00 30° dry 7 — 83.7%

08:00 31° dry 7 — 81.1%

09:00 39° dry 6 — 63.8%

10:00 46° dry 4 — 44.1%

11:00 50° dry 4 — 35.6%

12:00 51° dry 6 — 34.1%

13:00 53° dry 6 — 33.8%

14:00 54° dry 7 — 33.8%

15:00 54° dry 8 — 36.1%

16:00 53° dry 7 — 37.2%

17:00 52° dry 6 — 39.1%

18:00 48° dry 2 — 51%

Wed Wednesday 28 October

Good

Temp55°F

Raindry

Wind4 mph

Gusts—

Humidity28%

Should be dry

Good conditions for gneiss
Gneiss climbs well when dry; foliation planes can hold moisture on shaded aspects

Time °F Rain Wind (mph) Gust Hum

06:00 31° dry 6 — 73.8%

12:00 55° dry 4 — 27.7%

18:00 50° dry 1 — 46.4%

Thu Thursday 29 October

Good

Temp57°F

Raindry

Wind4 mph

Gusts—

Humidity25%

Should be dry

Good conditions for gneiss
Gneiss climbs well when dry; foliation planes can hold moisture on shaded aspects

Time °F Rain Wind (mph) Gust Hum

06:00 34° dry 9 — 67.5%

12:00 58° dry 4 — 25.1%

18:00 50° dry 2 — 46.5%

Fri Friday 30 October

Good

Temp59°F

Raindry

Wind4 mph

Gusts—

Humidity26%

Should be dry

Good conditions for gneiss
Gneiss climbs well when dry; foliation planes can hold moisture on shaded aspects

Time °F Rain Wind (mph) Gust Hum

06:00 38° dry 9 — 66.4%

12:00 58° dry 4 — 26.3%

18:00 50° dry 2 — 50.5%

Sat Saturday 31 October

Poor

Temp50°F

Rain0.02 in

Wind6 mph

Gusts—

Humidity54%

0.4mm rain forecast

Good conditions for gneiss
Wet gneiss is slick — let the rock dry before leading

Time °F Rain Wind (mph) Gust Hum

06:00 38° dry 4 — 97.1%

12:00 50° 0.01 in 6 — 54.1%

18:00 44° dry 2 — 85%

Sun Sunday 1 November

Poor

Temp43°F

Rain0.1 in

Wind2 mph

Gusts—

Humidity95%

2.7mm rain forecastHumidity 95% — likely fog/cloud

Wet gneiss is slick — let the rock dry before leading
Damp air — friction edges may feel greasy

Time °F Rain Wind (mph) Gust Hum

11:00 43° 0.05 in 2 — 95.1%

17:00 38° 0.03 in 3 — 99.5%

Bird ban (03-15 to 07-15)
NPS peregrine falcon closure — North + South Chasm View Walls and adjacent routes closed to climbing March 15 through July 15 annually; hard block, verify current NPS map for specific route status

About Black Canyon of the Gunnison

Black Canyon of the Gunnison is one of Colorado's most serious big-wall trad venues — 1.7-1.8 billion-year-old Precambrian gneiss and schist walls up to 2250ft tall (the Painted Wall is the third-largest vertical cliff in the contiguous US), sliced by pink pegmatite dikes that give the Painted Wall its name. Wilderness permit required for every climb (free at the ranger station). Peak seasons are mid-April to early June and mid-September to early November — summer brings dangerous afternoon thunderstorms (North American monsoon) and heat that makes the sunny walls unclimbable; winter closes South Rim road access. Peregrine falcon closures on the main North and South Chasm View Walls run March 15 through July 15 every year — this is a hard NPS block, not a partial one; verify the current park map for exactly which routes are affected. The pegmatite bands, while striking, are described as 'shattered and flaky' — test blocks and pin knife-blades cautiously.

Region: Black Canyon
Rock type: Gneiss
Aspect: mixed-facing
Altitude: 5673 ft
Exposure: high
Seepage: medium