100-degree heat hits the South as autumn temperatures return to Northeast

PHOTO: A sign shows the temperature in midtown Manhattan during an unseasonably hot day in New York City, Oct. 2, 2019.PlayJustin Lane/EPA via Shutterstock
WATCH Historic heat continues in the South as fall cool down hits Northeast, Midwest

There were nearly 100 cities from Texas to Connecticut that had their hottest October temperature ever recorded on Wednesday.

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Some of the records include:

-- Newark, New Jersey: 96 degrees

-- Washington, D.C.: 98 degrees

-- Baltimore: 98 degrees

-- Charlotte, North Carolina: 99 degrees

-- Allentown, Pennsylvania: 93 degrees

PHOTO: A major fall cool down begins today across much of the country. ABC News
A major fall cool down begins today across much of the country.

The historic heat continues Thursday in the South where temperatures could surpass Wednesday's readings, and some cities could break the records again.

Temperatures are forecast to climb to 100 degrees in Savannah and Memphis.

Click here for tips on how to stay safe in the heat.

PHOTO: A heatwave in the Southeast will continue throughout the day. ABC News
A heatwave in the Southeast will continue throughout the day.

But a major fall cooldown is in progress from the Rockies to the Midwest and into the Northeast.

Temperatures dipped by up to 30 to 35 degrees in the Midwest Wednesday as this Autumn cold blast moved east.

In the Northeast, temperatures plunged 30 degrees on Thursday from Wednesday’s highs.

New York City will stay in the cool 50s on Thursday -- a marked change from a record October high of 93 degrees on Wednesday.

PHOTO: A major fall cool down begins today across much of the country. ABC News
A major fall cool down begins today across much of the country.