So the 'properties' error is due to
<!-- WARNING: NOAAZone='WAZ022' is not correct. Will use 'WAZ204' for this point location per NWS. -->
Change Settings.php entries with WAZ022 to WAZ204 (the zones changed in Washington recently.
For the records issue, your testtags.php does have
$warmestdayonrecord = '93.0°F on: Jun 27 2021';
$warmestnightonrecord = '82.8°F on: Jun 28 2021';
$coldestdayonrecord = '23.0°F on: Jan 13 2024';
$coldestnightonrecord = '20.3°F on: Jan 16 2024';
Your Weather-Display setting in Control Panel,
Web Files/Web Page/Real Time FTP/WDL,
Custom Web Page Setup TAB
Untick the "Include the Units used"