The sweltering heat wave currently baking the majority of the US with soaring temperature of up to 100 degrees is set to continue throughout Fourth of July.
Tens of millions of Americans felt the heat this weekend with meteorologists describing the rising three digit temperatures experienced in many parts of the country as 'relentless' and 'dangerous'.
The record-breaking temperatures are forecast to continue in the next few days with number heat advisories and excessive heat warnings in effect from Memphis to Michigan and also for the Mid-Atlantic to norther New England regions.
High temperatures in the 90s to near 100 degrees, combined with high dewpoints, is expected result in heat indices of 100 to 110 degrees for many areas, according to the National Weather Service.
Nighttime lows may not fall below 80 degrees in some urban centers. Afternoon highs could reach as much as 10 to 20 degrees above normal, as 18 states have already issues heat advisories through the weekend and into the week.
The 'dangerous' heat will persist across the central and eastern US through at least Independence Day.
Scroll down for video
The sweltering heat wave currently baking the majority of the US with soaring temperature of 100 degrees is set to continue throughout Fourth of July
People stand underneath water being sprayed by a firetruck to cool down in Washington DC as the temperature in the nation's capital crept towards 94 degrees on Saturday
Extreme heat was a concern as NASCAR closed out its annual weekend at Chicagoland Speedway. Temperatures were in the 90s for the Xfinity race on Saturday, and it reached well into triple digits inside the cars. Drivers put bags of ice in their suits and splashed cold water on their faces during pit stops.
One Wisconsin newscaster put the heat to the test, placing raw cookie dough on a baking sheet in his car with a thermometer.
The car reached 170 degrees - hot enough to begin baking the cookies - serving as a warning to parents and pet owners.
'It will not only be very hot, but it may also be perceived as relentless for many people in the Northeast as the heat lingers into July,' AccuWeather Long-Range Meteorologist Paul Pastelok said.
The hot weather has already forced the cancellation of Fourth of July firework shows in several Ohio cities along with a basketball event in Toledo, Ohio, and a concert held by a school district in Minnesota.
Weather officials in New York City have warned that the heatwave is expected to be the longest the area has seen in two years, bringing five-straight days of 90+ degree temperatures.
In Kansas City, the weather service tweeted to 'Limit time outdoors, wear light colored and light weight clothing, take frequent breaks preferably in the shade, and drink plenty of water.'
Severe weather and flash flooding are possible for parts of the Plains to the Upper Great Lakes, according to the National Weather Service.
Tania Campbell sits in the water at Cheesequake State Park in Matawan, New Jersey on Sunday. Temperatures there rose to about 95 degrees on Sunday
People join the long queue to take a ferry to the beach in downtown Manhattan in New York on Sunday
A woman holds a sign while joining others underneath water being sprayed by a firetruck to cool off people attending a 'Families Belong Together' rally, in Washington DC Saturday
Saturday, thousands of organizers across the country protesting the Trump administration's 'zero tolerance' policy baked in the heat. Organizers are pictured cooling off at a fountain in Chicago
Syracuse, Buffalo and cities in the New York and Vermont area could experience record heat on Sunday.