I believe so. I use it with a dongle and software-defined radio (SDR) to receive weather measurements from various devices. I have a weather station but the dongle receives radio frequency (RF) signals directly from the outside sensors.
Are you sure you need all the power of several Raspberry Pis when each temp sensor only cost $AUD30 and the dongle $AUD20? One dongle and one weewx installation can receive many sensors’ data. One RPi can host one weewx and one dongle, with SDR input specifying several -R parameters naming the remote sensors.