Supposing it rains tomorrow, the match will be cancelled.
仮に彼が来ても、私は会わない。
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'.
仮にこの書類を預かっておきます。
I'll keep this document for the time being.
仮にそう決めておきましょう。
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.