I think the extra hits on WU for your station are probably happening because some VWS users in your area have added your station to the "Local Conditions" list in VWS. (I don't run VWS, but have seen multiple websites generated by VWS that include tables of current conditions with WU IDs listed).
I'm guessing, but I think VWS downloads the data from WU, and WU politely increments the view count (even though a real browser is not hitting the page.. just data is being collected).
Best regards,
Ken