The age of consent in Pennsylvania is 16 years of age for statutory sexual assault, and 18 years for corruption of minors. Teenagers aged 13, 14 and 15 may or may not be able to legally engage in sexual activity with partners who are less than 4 years older.

Can a 16 year old date a 24 year old in Pennsylvania?

Dating is not illegal. The Pennsylvania Age of Consent is 16 years old.

Is it weird for a 16 year old to date a 24 year old?

In most countries and some U.S. states, its legal for a 16 year old to date a 24 year old, but in most U.S. States and on the federal level, the age of majority is 18 (in Alabama, its 19), so the relationship would be illegal.