Using .some and .every

const temperatures = [
    { degrees: 69, isRecordTemp: false }, 
    { degrees: 82, isRecordTemp: false }, 
    { degrees: 73, isRecordTemp: false }, 
    { degrees: 64, isRecordTemp: false }
];

// includes, some, every
const result = temperatures.every(temperature => !temperature.isRecordTemp); // true / false
console.log(result);

.every loops through the entire array to find the value
.some stops the loop once it finds the value