My first guess would be something in the Solidago genus. They have small yellow flowers and the basic look of the plant is right. The leaf arrangement, shape, venation, and leaf-margin serrations all look right for a species of Solidago. There are over a hundred (similar-looking) species, though, so it's not easy to say which one precisely.
However, plants are classified by their flower structure so you may not be able to get a positive ID until it blooms.
