× Extreme Heat Warning
Until 2025-06-22T04:00:00-04:00 • National Weather Service
* WHAT...Dangerously hot conditions with heat index values over 105 expected for the Lower Susquehanna Valley. * WHERE...Adams, Cumberland, Dauphin, Franklin, Lancaster, Lebanon, Perry, and York Counties. * WHEN...From 11 AM Sunday to 8 PM EDT Wednesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...Heat index values and the associated risk of heat-related impacts will be highest on Monday and Tuesday.