All Lancaster County school districts announced they are closed Tuesday.
All had announced two-hour delays Monday afternoon, but decided to closed Tuesday morning. Closed are Cocalico, Columbia, Conestoga Valley, Donegal, Eastern Lancaster County, Elizabethtown, Ephrata, Hempfield, Lampeter-Strasburg, Manheim Central, Manheim Township, Penn Manor, Pequea Valley, School District of Lancaster, Solanco and Warwick.
Also closed are Lancaster Catholic High School and Lancaster Mennonite Schools.
The Lancaster County Career and Technology Center also closed, but staff was instructed to report at 10 a.m.
Octorara Area School District, which is located in Chester County but has some students from Lancaster County, was operating on a two-hour delay.
The decision to close was due to the extremely cold temperatures. Early-morning temperatues Tuesday were around zero, with wind chills near minus 20.
On Monday, all school districts had announced two-hour delays.
Lancaster Catholic High School, OMPH in Ephrata, Sacred Heart School, Lancaster Country Day School and Lancaster Mennonite schools, Linden Hall, Lancaster Countly Christian School also announced two-hour delays.
The Janus School, previously operating on a two-hour delay, is now closed Tuesday.