Quote:

"Once we get to our peak temperature of the day, we'll start to cool down."



And what's the problem with it?

Scenario A)

Temperature rises slowly till 10:30AM when a cold front comes through causing a decrease in the temperature.

Scenario 2)

Temperature rises slowly till 2:30PM at which time it levels off and remains at the high for the day till 7:00PM when it starts to cool off.

I submit that your weatherman quote applies only to the first scenario.