Cloud-free timing: Around 67% early, improving to around 100% later.
A wild day on Drosgl: summit wind broadly 20-40 mph, with gusts 40-50 mph during the morning (gale-force winds). Much calmer lower down - generally 10-20 mph in the valley, rising towards the tops. Any cloud sits well above the tops (base 800-1800 m) - clear summits. Little or no rain expected. Confidence moderate (forecast models agree on the walking impact of the wind) - the summit peak could reasonably be 30-36 mph, so treat the headline as mid-range.