Albert,
This is caused by a bug in ajax-gizmo.php
Edit your ajax-gizmo.php
change:
<?php
$t1 = strip_units($dewpt);
echo $dewpt; ?>
to:
<?php
$t1 = strip_units($dewpt);
echo $t1 . $uomTemp; ?>
Let me know if that fixed it, because if it does fix it, then I will contact Ken True to have him fix it in the downloadable template set.