"As the search continues we remain hopeful Rachel and Tim will be found and reunited with their families and friends."
Police Scotland said: "Conditions remain under constant review.
"Police and partners reiterate the appeal to anyone with any information that may assist the search effort to make contact.
"Climbers and walkers travelling to the area this weekend are asked to bear the search activity in mind and report anything they feel may assist via 101.
"An assessment of conditions will be made first thing on Saturday where consideration will be given to deploying Mountain Rescue personnel and all available resources."