I bought a $60 weather station from Amazon where the base station generates a JSON file which it then wants to send to its own cloud servers. I firewalled it on its own, and have an ESP32 reading the JSON file off it and then sending the individual sensor readings into Home Assistant for a visual dashboard, and into Postgres which I use for my own weather-data-wrangling (eg hasn’t rained in a couple days and no rain expected from my local weather API? turn the watering system on for the gardens)

I built mine using a Hydreon Rain Gauge sensor (RG11 in my case) and combined it with an off the shelf wind sensor from AliExpress, presumably sold by Adafruit's supplier, which closes a reed switch every rotation. Everything is powered through PoE, controlled by wESP32. I spent a couple hundred bucks at most including all the mounting hardware.

It all controls an aluminum "awning" in my house that's supposed to open above certain wind speed, close when it rains.