The sweltering heat wave that has stifled the tri-state throughout the week and already has claimed nearly two dozen lives in its trek across the nation stretches into a sixth day, with the hottest temperatures expected today and tomorrow.

The National Weather Service says the heat and humidity will combine to make it feel like 105 degrees Thursday and as hot as 110 degrees on Friday and Saturday.

Don’t expect it to feel much cooler in the evening, when temperatures may not drop below 80 degrees.

Nearly all of New Jersey is under an excessive heat warning through Saturday evening as a large dome of high pressure brings stifling heat and humidity to the region.

An excessive heat warning is in effect through Friday evening for the five boroughs, the lower Hudson Valley and Rockland and Westchester counties in New York.

The National Weather Service urges area residents to take extra precautions when working or spending time outdoors. Reschedule strenuous activities to early morning or evening and be aware of the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water.

Energy could be an issue with a spike in power demand expected throughout the five boroughs. Con Edison has extra crews and support personnel standing by today, ready to respond to any heat-related disruptions that might occur.

Forecasters say a sea breeze might provide some relief at the beaches, but for the most part, there will be little relief before Sunday. Highs Saturday are expected to hit the mid 90s before dropping to the mid 80s on Sunday.

Next week’s forecast looks more seasonable with highs in the low to mid 80s.

(Source: NBC New York)