Below, you'll see any text that was highlighted with comments from the reviewer.
"the few bare tree’s drooped as if life was to heavy for them." I really like this because it seems to mirror the way Slate is feeling. You show that there are things in his life that weigh on him and this line really stood out and highlighted this.
There are many emotions. He's very attentive to his surroundings which to me suggests kind of low level unease or fear. At the same time there is kind of a sense of enjoyment - you describe people as hiding under umbrellas whereas Slate is not afraid of the rain, there's a sense of freedom in that.
also familiarity - your descriptions were very vivid, I felt like I was there.
It's cool that you include the line "it was the rain that had made him decide to go for a walk" because this instantly tells us something about Slate's character. I like your simple sentence structure, it works well and is consistent and provides a voice for your character. For me this made sure that it wasn't just a disconnected description sandwiched between two statements, instead it seems like a continuous piece narrated by Slate the whole way through.