Supposing it rains tomorrow, the match will be cancelled.
Even if he comes, I won't see him.
temporarily; provisionally; for the time being
Describes a temporary or provisional arrangement, often with a sense of 'for now' or 'tentatively'.
I'll keep this document for the time being.
Let's decide that provisionally.
Even if he were the culprit, he can't be convicted without evidence.
We decided to temporarily entrust him with the manager's duties.
Supposing that story is true, it would be a huge problem.