Insect and Spider Identification: Spider question, 1 by jacobp

jacobp wrote:
I was firing up my grill earlier and I saw this little guy hanging out on a web he/she built with the grill and a near by chair. I thought the yellow marks on it\'s back was interesting so I grabbed my camera to try and snap some photos. I was shaking when doing this since I get very nervous around spiders or snakes. Hopefully the photo is clear enough. Would anyone happen to know what spider this is and if it is venomous? I am in Eastern Pennsylvania and it is August.

Any ideas?

Thank you so much!