Which 4th of July was the coldest?

July 23, 2008 12:05:35 PM PDT
The coolest 4th of July happened in 1978, when Philadelphia only got up to 65 degrees!

Erica's Answer:

It was also only 65 degrees in Allentown and Wilmington, and only 67 degrees in Atlantic City on July 4, 1978.

- Erica