Not sure if this is a weed
Once it flowers it will be easier to identify. Please send a photo then. The bloom will tell if it is a weed. Volunteer plants are usually fairly aggressive and it may not be something you want. Don't let it go to seed until you are sure you wish to keep it.
Plant identification can be very labor intensive and since it will take time you may want to try to find the answer yourself since you have the plant to look at. I won't be able to provide an accurate identification without some of the information listed above.
Unless one is familiar with a plant or plant family plant identification requires detective work. Here are some useful resources.
The plant is evening primrose. It probably self-seeded. https://www.minnesotawildflowers.info/flower/common-evening-primrose. It is not very aggressive.