Onondaga County braces for mid-90s heat, urges use of cooling centers

Heat indexes climbing into the mid-90s can turn a regular afternoon into a health risk across Onondaga County, especially if the power goes out or a home has no air conditioning. County officials are steering residents toward cooling centers, weather advisories and utility outage maps as temperatures and humidity rise.

Onondaga County’s heat-health guidance says heat-related illness can affect anyone, but older adults, people with chronic health conditions and people without air conditioning face the highest risk. The county also points residents to its Cooling Center Finder, along with the National Grid and NYSEG outage maps, so households can track whether a blackout could make already hot indoor conditions worse. The local National Weather Service forecast office for Onondaga County is in Binghamton, and its Onondaga County forecast page is the official source for current conditions and hazardous weather outlooks.

The warning carries weight because this kind of heat has become a recurring summer problem. Onondaga County says 2025 brought at least 17 extreme heat days, including two heat waves. In 2024, the county counted 20 extreme heat days, including a five-day heat wave in June, and Syracuse logged a record-breaking nine days that reached 89 degrees. Past heat waves in Central New York have pushed temperatures near 98 degrees and made it feel as hot as 110 degrees, a level that can quickly overwhelm people working outside or spending hours in the sun.

The National Weather Service says heat advisories and other extreme-heat products are issued through its hazardous weather process, with watches typically going out 24 to 48 hours before an event and warnings within 24 hours. That makes the first day of a heat stretch the time to change plans: hydrate before you feel thirsty, avoid strenuous outdoor work during the hottest part of the day and check on neighbors who may not notice symptoms until they become serious.

Syracuse has responded to similar heat by extending hours at pools and community centers so residents have more places to cool off. Onondaga County’s message is the same for this stretch of hot weather: know where to go, keep an eye on outages and treat a mid-90s heat index as a real danger, not just a warm forecast.