Can I fish for salmon and steelhead on free fishing weekend?

Yes, unless your fishing license is revoked and your fishing privileges are suspended due to non-payment of child support or an order from WDFW or a court. When your fishing privileges are suspended, it means no fishing, even during free fishing weekend.
On “Free Fishing Weekend,” fishing licenses are not required.
However, catch record cards are required to fish for salmon, sturgeon, steelhead, Puget Sound Dungeness Crab, and halibut.
Free fishing days are valid for everyone.
All other fishing rules apply, including area and lure or bait restrictions and size and catch limits.
Each year the free fishing weekend will be the first weekend in June, after the first Monday in June.
Check the Sportfishing Rules Pamphlet to determine if a Discover Pass or Vehicle Access Pass is required to park your vehicle on lands owned or controlled by WDFW during free fishing weekend.