Right now

Temp44°F

Wind10 mph

Gusts16 mph

Humidity85.8%

Rain 48hdry

Last rainNone recent

Assessment

0.6mm rain forecast

High humidity (85.8%) — phonolite friction compromised, particularly for bouldering

Humidity 85.8% — potential fog/cloud, rock may be damp from condensation

7-day forecast

Scroll through each day — hourly detail is shown inline.

Today Sunday 11 October

Poor

Temp54°F

Rain0.02 in

Wind9 mph

Gusts16 mph

Humidity71%

0.6mm rain forecast

Good friction range for phonolite
Wet phonolite is slick and column-crack systems hold water — let it dry before leading

Time °F Rain Wind (mph) Gust Hum

06:00 44° dry 10 — 85.8%

07:00 44° dry 9 — 85.6%

08:00 44° 0.00 in 8 — 84.8%

09:00 45° 0.01 in 8 — 86.4%

10:00 46° 0.00 in 7 — 89.9%

11:00 48° 0.00 in 7 — 86%

12:00 51° dry 7 — 78.5%

13:00 55° dry 8 — 66.1%

14:00 55° dry 9 — 63.9%

15:00 59° dry 11 — 57%

16:00 58° dry 12 — 57.9%

17:00 56° dry 13 — 61.3%

18:00 53° dry 13 — 68.7%

19:00 51° dry 14 — 75.2%

20:00 51° dry 13 — 77.9%

21:00 50° dry 13 — 86.2%

Mon Monday 12 October

Poor

Temp45°F

Rain0.01 in

Wind11 mph

Gusts—

Humidity75%

0.3mm rain forecast

Phonolite climbs well when dry; the columnar crack systems drain reasonably fast after rain

Time °F Rain Wind (mph) Gust Hum

06:00 50° dry 9 — 92.6%

07:00 49° dry 11 — 92.9%

08:00 47° 0.01 in 13 — 93.8%

09:00 45° 0.00 in 13 — 92.4%

10:00 44° dry 13 — 89.1%

11:00 44° dry 13 — 83.4%

12:00 45° dry 12 — 75.4%

13:00 46° dry 10 — 70.6%

14:00 46° dry 9 — 70.1%

15:00 46° dry 8 — 68.2%

16:00 46° dry 8 — 66.6%

17:00 45° dry 9 — 67.4%

18:00 44° dry 8 — 70.1%

19:00 42° dry 8 — 72.8%

20:00 42° dry 6 — 74.5%

21:00 41° dry 6 — 77.3%

Tue Tuesday 13 October

Poor

Temp48°F

Rain0.07 in

Wind6 mph

Gusts—

Humidity79%

1.8mm rain forecast

Good friction range for phonolite
Wet phonolite is slick and column-crack systems hold water — let it dry before leading

Time °F Rain Wind (mph) Gust Hum

06:00 40° dry 6 — 98.5%

07:00 41° dry 4 — 96.8%

08:00 42° dry 4 — 97%

09:00 43° 0.01 in 5 — 95.4%

10:00 43° 0.02 in 4 — 95.1%

11:00 44° 0.00 in 4 — 95.4%

12:00 47° dry 6 — 85.3%

13:00 51° dry 6 — 72.3%

14:00 53° dry 6 — 68.2%

15:00 53° dry 5 — 67.4%

16:00 52° dry 6 — 68.1%

17:00 50° dry 7 — 70.6%

18:00 48° dry 7 — 72.9%

Wed Wednesday 14 October

Poor

Temp50°F

Rain0.06 in

Wind4 mph

Gusts—

Humidity71%

1.6mm rain forecast

Good friction range for phonolite
Wet phonolite is slick and column-crack systems hold water — let it dry before leading

Time °F Rain Wind (mph) Gust Hum

06:00 44° dry 4 — 79%

12:00 50° 0.02 in 4 — 71.3%

18:00 50° 0.04 in 0 — 95.8%

Thu Thursday 15 October

Poor

Temp45°F

Rain0.02 in

Wind11 mph

Gusts—

Humidity97%

0.4mm rain forecastHumidity 97% — likely fog/cloud

Wet phonolite is slick and column-crack systems hold water — let it dry before leading

Time °F Rain Wind (mph) Gust Hum

06:00 46° 0.01 in 4 — 98.5%

12:00 45° dry 11 — 96.9%

18:00 51° dry 10 — 50.4%

Fri Friday 16 October

Good

Temp50°F

Raindry

Wind14 mph

Gusts—

Humidity39%

Should be dry

Good friction range for phonolite
Phonolite climbs well when dry; the columnar crack systems drain reasonably fast after rain
Breezy — helps drying

Time °F Rain Wind (mph) Gust Hum

06:00 25° dry 4 — 94.2%

12:00 49° dry 14 — 38.6%

18:00 48° dry 15 — 42.4%

Sat Saturday 17 October

Good

Temp61°F

Raindry

Wind9 mph

Gusts—

Humidity39%

Should be dry

Good friction range for phonolite
Phonolite climbs well when dry; the columnar crack systems drain reasonably fast after rain

Time °F Rain Wind (mph) Gust Hum

06:00 45° dry 17 — 59.3%

12:00 61° dry 9 — 38.9%

18:00 57° dry 3 — 43.5%

Sun Sunday 18 October

Good

Temp66°F

Raindry

Wind2 mph

Gusts—

Humidity35%

Should be dry

Good friction range for phonolite
Phonolite climbs well when dry; the columnar crack systems drain reasonably fast after rain

Time °F Rain Wind (mph) Gust Hum

06:00 42° dry 2 — 64.4%

12:00 65° dry 3 — 35.1%

18:00 58° dry 5 — 41.3%

Bird ban (03-01 to 07-31)
TWO overlapping restrictions at Devils Tower: (1) NPS raptor closure on East and Northeast Faces for nesting peregrine and prairie falcons, typically spring through early summer. (2) NPS-advocated JUNE voluntary closure in respect of Native American cultural and religious observances associated with the Tower (Bears Lodge to the Lakota, Cheyenne and other tribes) — historically ~85% climber compliance. Registration at the climbing kiosk is mandatory. Check current specifics at nps.gov/deto/planyourvisit/climbing.htm.

About Devils Tower (Bears Lodge)

Devils Tower — known as Bears Lodge (Mato Tipila) to the Lakota, Cheyenne and other tribes for whom the formation is sacred — is one of the most iconic pieces of stone on earth: a 265m (867 ft) porphyritic phonolite laccolithic butte rising abruptly from the plains of northeastern Wyoming, established as the first US National Monument by Teddy Roosevelt in 1906. Climbing is on the tower's signature columnar cracks — hundreds of 1.2-1.8m diameter hexagonal columns formed by cooling contraction of the phonolite intrusion, giving 'a crack every 5 or 10 feet' running vertically. Cracks are 'beautiful and uniformly shaped'; faces between are 'less than vertical' and blank. Mandatory free registration at the climbing kiosk at the head of the Tower Trail. No chipping, drilling, or permanent anchor installation permitted. NPS climbing office: (307) 467-5283 x632.

Region: Devils Tower
Rock type: Phonolite
Aspect: mixed-facing
Altitude: 4793 ft
Exposure: high
Seepage: low