Cloud-free timing: Cloudy early, clearing later.
A mixed day on Red Screes: summit wind broadly 15-35 mph, with gusts 40-50 mph during the evening (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 1000-1500 m) - clear summits. Little or no rain expected.