You may need to adjust your summer plans after new forecast reveals cooler weather across parts of the US

The latest US forecast has suggested that some Americans may want to adjust their upcoming summer plans.  

While much of the West is sweltering under record breaking heat, the Northeast and Midwest are preparing for a cooler next two weeks. 

The National Oceanic and Atmospheric Administration has predicted places like Missouri, Illinois and Indiana will be as much as 60 percent below the average temperature. 

New Jersey, Massachusetts and New York are also expected to see a dip - about 40 to 50 percent cooler than normal. 

Though this cold front might delay your beach trip, it won't be postponed indefinitely - warmer air fronts from the Gulf of Mexico are expected to come in the next few weeks, pushing out the current cold front that leaked down from Canada

The National Oceanic and Atmospheric Association tracks national weather trends. This map shows how far above or below a region's predicted forecast is compared to past years.

The National Oceanic and Atmospheric Association tracks national weather trends. This map shows how far above or below a region's predicted forecast is compared to past years. 

'There might be several days where we don’t get out of the 70s, but we still should get a lot of nice weather and a lot of days with sunshine,' Michael Priante, a meteorologist from the WeatherWorks forecasting company told NJ Advance Media

This will keep state's like New Jersey 'lagging behind' annual trends for the coming weeks, which is also a major beach destination for northeasterners.

For example, June days in New Jersey traditionally reach into the high 80 degrees daily. 

But if this model holds true, then for the first half of this month, the Garden State will be stuck in a cool 70 degree Fahrenheit trough. 

Indianapolis had the coolest start to a June that it's had in nine years, Meteorologist Ethan Rosuck said on Fox59

And Chicago is also expected to feel this impact, which is summer travel destination city.

During this time of year, the average high is 80 degrees. 

But the windy city is predicted to see temperatures 15 degrees colder.

On top of lower temperatures, New Jersey may also see some scattered rain due to a low pressure air system. 

Low pressure systems are regions where the atmosphere is relatively thin, which lets more wind, rain and clouds come in. These features can all contribute to a lower temperature. 

High pressure systems, by contrast, feature a dense, heavy atmosphere. In these areas, the influence of wind, rain and clouds is blocked, which makes temperatures hotter and more stable.  

Right now, the low pressure system is letting cooler air from Canada to diffuse breezily across this part of the country, Priante said. 

Until warmer air from the Gulf of Mexico starts to move into the territory, Priante predicts this trend will hold. This could be as much as two weeks. 

Though this cold front might delay your beach trip, it won't be postponed indefinitely - warmer air fronts from the Gulf of Mexico are expected to come in the next few weeks, pushing out the current cold front that leaked down from Canada

Though this cold front might delay your beach trip, it won't be postponed indefinitely - warmer air fronts from the Gulf of Mexico are expected to come in the next few weeks, pushing out the current cold front that leaked down from Canada

The National Weather Service is predicting this trend will hold until June 17. 

At the same time, whole swaths of the West are feeling the brutal reality under 'heat domes' - high pressure areas which trap hot air like a lid on a boiling pot. 

California's central valley, which is known for its agriculture, was predicted to have temperatures 20 degrees above the average. 

Meanwhile, Texas has already broken 110 degrees, putting it ten degrees above average temperatures. 

These extreme temperatures can cause heart attacks, stroke and kidney dysfunction. Extreme heat therefore kills an estimated as 1,220 Americans each year - though the total could be higher, since it's difficult to report - according to the Centers for Disease Control

This summer heat is expected to return to the Northeast after this brief respite too. Meteorologists predict this upcoming summer will look a lot like the last - full of record breaking heat. 

'We can expect another dangerous hot summer season, with daily records already being broken in parts of Texas and Florida,'  Kristy Dahl, a principal climate scientist for the Climate and Energy program at the Union of Concerned Scientists told The Guardian.