A recent stretch of 90-degree days is expected to continue this week before the hot weather tapers, two weather organizations said Sunday.
Rain also is possible, moistening a region that experienced a dry July.
The local forecast for today calls for a high temperature in the low 90s, National Weather Service spokeswoman Jackie Hale said.
The temperature is expected to reach the mid-90s Tuesday and Wednesday, when the heat index could make it feel like the temperature is about 105, she said.
The high temperature is expected to drop to the upper 80s Thursday and the lower 80s Friday, Hale said.
The chance of rain is about 30 percent Monday, Tuesday, Thursday and Friday.
AccuWeather is projecting high temperatures in Hagerstown of 90 today, 93 Tuesday and Wednesday, 86 Thursday and 85 Friday, meteorologist Alan Reppert said.