My friends and I were looking for an easy way to track the weather during the event and decided we’d throw up a website and share with everyone! It lists the current weather with an hourly forecast and a glimse into the next couple of days.
It auto-updates every 2 minutes as we wanted to just be able to switch between Pokemon Go and the weather site throughout the event. Feel free to use it, give feedback, and I hope it helps someone!
Go Fest Weather: https://gofestweather.live
Happy Go Fest!