Can I climb todayReading the forecast.
How to read the dial
- Dry
- Fast‑drying sectors only
- Wet
- Now
- When it dries
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Climb indoors instead
Bouldering gyms near the forest, for a wet day.
Before you go
Swan Falls after rain
Swan Falls: basalt boulders in dry, open country, in Idaho, United States.
Is Swan Falls dry today?
The answer at the top of this page comes from NOAA's forecast and how fast basalt dries, and it's updated through the day. Nobody checks the rock in person, so touch the holds before you climb.
How long does Swan Falls take to dry after rain?
Swan Falls is basalt. It sheds rain quickly, though cracks, pockets and tufas can seep for days after heavy rain. These times are the model's estimates, tuned on Fontainebleau sandstone and not checked here. After a proper soaking (2 mm of rain or more), sunny, windy boulders need about 8 hours of dry weather, most of the boulders about 14 hours, and shaded ones about 19 hours. A light shower needs less. Wind, sun and dry air shorten the wait, and above about 92% humidity the model won't call the rock dry.
Can you climb at Swan Falls when the rock is wet?
Wet rock is slick, and pockets and cracks seep for days. If the holds feel greasy, come back later.