In weewx.conf, set the debug to "1" and restart weewx.
Watch the syslog, after approx. 5 minutes you should see records being added to the database. After 5 minutes you be able to see the data.
Jul 19 09:35:11 raspberrypi weewx[533]: acurite: next read in 18 seconds
Jul 19 09:35:29 raspberrypi weewx[533]: acurite: Found station at bus= device=
Jul 19 09:35:29 raspberrypi weewx[533]: manager: Added record 2019-07-19 09:35:00 EDT (1563543300) to database 'weewx.sdb'
Jul 19 09:35:29 raspberrypi weewx[533]: manager: Added record 2019-07-19 09:35:00 EDT (1563543300) to daily summary in 'weewx.sdb'
Jul 19 09:35:30 raspberrypi weewx[533]: reportengine: Running reports for latest time in the database.
Jul 19 09:35:30 raspberrypi weewx[533]: reportengine: Report 'SeasonsReport' not enabled. Skipping.
Jul 19 09:35:30 raspberrypi weewx[533]: reportengine: Report 'SmartphoneReport' not enabled. Skipping.
Jul 19 09:35:30 raspberrypi weewx[533]: reportengine: Report 'MobileReport' not enabled. Skipping.
Jul 19 09:35:30 raspberrypi weewx[533]: reportengine: Report 'StandardReport' not enabled. Skipping.
Jul 19 09:35:30 raspberrypi weewx[533]: reportengine: Running report 'Belchertown'
Jul 19 09:35:30 raspberrypi weewx[533]: reportengine: Found configuration file /home/weewx/skins/Belchertown/skin.conf for report 'Belchertown'
Jul 19 09:35:30 raspberrypi weewx[533]: cheetahgenerator: using search list ['weewx.cheetahgenerator.Almanac', 'weewx.cheetahgenerator.Station', 'weewx.cheetahgenerator.Current', 'weewx.cheetahgenerator.Stats', 'weewx.cheetahgenerator.UnitInfo', 'weewx.cheetahgenerator.Extras', 'user.belchertown.getData']
Jul 19 09:35:30 raspberrypi weewx[533]: acurite: Found station at bus= device=
Jul 19 09:35:30 raspberrypi weewx[533]: acurite: next read in 18 seconds
Jul 19 09:35:30 raspberrypi weewx[533]: manager: Daily summary version is 2.0
Jul 19 09:35:33 raspberrypi weewx[533]: cheetahgenerator: Generated 11 files for report Belchertown in 3.05 seconds
Jul 19 09:35:33 raspberrypi weewx[533]: copygenerator: copied 3 files to /home/weewx/public_html
Jul 19 09:35:33 raspberrypi weewx[533]: manager: Daily summary version is 2.0
Jul 19 09:35:35 raspberrypi weewx[533]: reportengine: Report 'FTP' not enabled. Skipping.
Jul 19 09:35:35 raspberrypi weewx[533]: reportengine: Report 'RSYNC' not enabled. Skipping.
Jul 19 09:35:48 raspberrypi weewx[533]: acurite: Found station at bus= device=
Jul 19 09:35:48 raspberrypi weewx[533]: acurite: next read in 6 seconds
Jul 19 09:35:54 raspberrypi weewx[533]: acurite: Found station at bus= device=
Jul 19 09:35:54 raspberrypi weewx[533]: acurite: next read in 12 seconds