Got a little further as far as making sure connections were established but, apart from what seems to be a time code since the web page display the correct time range, the json sensor data are all 0.0. Below is the indi-weatherradio.service restart and output from ./bin/wr_rrd_update.py --verbose; as well as some data from /usr/share/weatherradio/html/data/RTdata_6h.json.
gilles@MissionControl:/usr/share/weatherradio$ sudo systemctl restart indi-weatherradio.service
gilles@MissionControl:/usr/share/weatherradio$ ./bin/wr_rrd_update.py --verbose
Setting ethernet ip:port to 192.168.2.155:80
Waiting for connection...
Connection succeeded.
Setting location to lat=45.5, long=-75.75, elev=60.0.
Reading weather data from "Weather Radio"@192.168.2.245:7624
Reading weather parameter...
Reading weather parameter... (succeeded)
Reading sensor data from "Weather Radio"@192.168.2.245:7624
gilles@MissionControl:/usr/share/weatherradio$ ./bin/wr_rrd_fetch.py -s 6h