I think a good rule of thumb for features like this is: if it doesn't proudly declare it, the answer is no.
Reviews of the bundle on Adorama contain one which complains that the backpack has a "poor build" and that the fabric that used is "really thin". So that doesn't sound so hopeful. On the other hand, a reviewer on B&H Photo notes: "the bag seems to be constructed fairly well. [...] And there seems to be some weather sealing for the tripod pocket zipper."
But that's a far cry from "weather proof" or even resistant. I think you probably should look elsewhere for that.