The Weather Channel is predicting below freezing (32º F) nights for the next 10 days.  If you know of someone in need, the below sites provide information on some of the homeless shelters in Gettysburg. 

https://www.gettysburgpa.gov/welcome-best-known-small-town-world/pages/housing-gettysburg

http://gettysburgcares.com/

https://adamsrescuemission.org/