The last few days of October will see roughly 100 new daily record highs as the thermometer rises to summer-like levels Monday through Thursday.

For locations like Washington, D.C., and New York City, an expected temperature near 80 degrees on Thursday will make it more like Labor Day than Halloween in terms of warm temperatures.

Monday’s high temperatures are expected to reach 15 to 25 degrees above average in the Great Plains and parts of the South and Midwest. This means temperature readings in the 80s and 90s for Texas and the Southwest, with 60s and 70s for the highest temperatures in the Upper Midwest.

Little Rock, Arkansas, Wichita, Kansas, Shreveport, Louisiana, Memphis and Austin are all metro areas that could start the week with record highs.

These much-above-average temperatures will shift east toward the Great Lakes and Ohio Valley on Tuesday, where record highs are expected for Minneapolis, Chicago, Cleveland and St. Louis.

Fast forward to Thursday and the record warmth shifts to the Mid-Atlantic and Northeast. Buffalo and Albany, New York, Burlington, Vermont, Washington, DC and Reading, Pennsylvania, are all cities that could start trick or treating with record high temperatures.

While the warm temperatures will keep coats from ruining costumes, warmer Halloweens are the future as October nights continue to grow warmer due to the influence of human-induced climate change.

According to Climate Central, October nights in 216 U.S. cities (89% of 242 analyzed) have warmed an average of 3.3°F since 1970.

The Midwest and Northeast will see cooler temperatures Friday, but the South will remain warm through the weekend.