We cannot know for sure what will happen over multiple weeks.
I do expect, however, that it will reach much higher levels in certain days or periods of time.
And I do expect, especially if Bitcoin price doesn't make big jumps or in the week-ends, to get to lower values (8-9 days ago I've seen under 10 sat/vbyte; last night I've seen under 30 sat vbyte).
But again, the fee depends on how many transactions are made and how much impatient are the senders to get the transactions confirmed (and keep in mind that exchanges and other services are usually "impatient" with the withdrawals).