[ac29]

> Water molecules block 2.4Ghz spectrum that WiFi uses.

This isnt really true to any significant degree that matters, unless you are literally under water.

Rain fade is a thing, but is really only meaningful above 10GHz.

edit: I should note, its not that water droplets dont attenuate radio signals, its just that losses on a typical radio path are already huge in perfectly clear weather - you might lose 99.99999999% (100dB) or more of your signal strength between transmitter and receiver anyways.