The cool temperatures that started the week are now just a memory.

Today will be a very hot one, with an excessive heat warning in effect in effect for the for states. For southeast Kansas, the warning starts today at noon and will continue until Wednesday at 10 p.m. Oklahoma and Missouri will also be included in the warning this weekend. The heat index could climb as high as 114 for the Coffeyville area. The National Weather Service reminds anyone outside to take frequent breaks, seek shade and drink plenty of water.