Odds are that you are not the first person that's smoked weed and pissed in a cup when applying. Odds are that they won't care if the job does not entail high security clearances or operating heavy equipment or driving company vehicles. I mean they're hiring recent college grads.

My random internet advice is assume "don't ask, don't tell" is in everyone's interest. If the company asks, point out it is legal where you live.

Otherwise demonstrate discretion because that's more important to the company than an occasional bonger.

Good luck.