It's hard to tell from just an image, but I think it's a mismatch between what WeatherCat uses for date format and what the template is expecting.
In Settings.php, there is the entry:
$SITE['WDdateMDY'] = false; // for weather software date format of month/day/year. =false for day/month/year
If your date looks like day/month/year in WCTtags.php?sce=dump, then =false; is the one to use.
otherwise, set it to =true;
It also assumes that the date delimiter is either a / - or . but the order is MDY or DMY.
I can't tell more without a link to a public URL to your weather website...
Hope this helps...