WASHINGTON (CBSDC) — Blistering heat will again blanket the Washington region with temperatures expected to soar above the 100-degree mark on Friday and Saturday, before yielding to just below the triple-digit mark on Sunday and Monday.

The National Weather Service has issued a heat advisory for the region beginning at 11 a.m. Friday.

Authorities are reminding citizens that there is an increased risk of heat exhaustion and other heat-related illness for those spending excessive amounts of time outdoors and those without air-conditioning.

Related: Staying Safe In The Summer Sun

Temperatures are expected to settle in the low to mid 90′s as next week progresses.

The 4th of July forecast calls for a high of 92 degrees with a 30 percent chance of isolated thunderstorms.

Stay on top of the latest weather developments on the CBS DC weather page.