Early development state of a weather station you can print with your 3D printer.

For the Anemometer you need three half table tennis balls, two ball bearings (608 ZZ), a threared rod, some screw nuts (M5 or M6), one magnet and one hall sensor. There are holes for mounting the Hall Sensor PCB. The threaded rod is smaller than the inner diameter of the 608 ZZ, it is hold in place with the nuts.

For the tipping bucket rain gauge you need one magnet and one Hall sensor (there is no mounting yet)