Grade Trend

<p>How much will colleges consider my grade trend?
Freshman & Sophomore year I pretty much had in the range of 3.1-3.2, unfortunately. Although, junior year I got a 3.7 first semester and most likely 3.4.-3.5 second semester. I want to apply to my colleges asap of senior year but should I wait till the first semester is done, then apply so they can see my grade trend even more? Or what? I'm kind of confused on what to do here.</p>