ASHEVILLE, N.C. (828newsNOW) — Western North Carolina is in for a stretch of hot, humid weather this week as forecasters warn that heat index values will climb into the upper 90s and low 100s across parts of the region, with even hotter conditions expected farther south.

The National Weather Service in Greenville-Spartanburg said temperatures will steadily increase through the week and could remain well above normal into the Independence Day holiday weekend.

While Asheville is expected to see highs near 89 degrees Monday and Tuesday, temperatures are forecast to climb into the mid-90s by Wednesday and Thursday. Combined with high humidity, the heat will make it feel significantly warmer, especially across the foothills and Piedmont, where heat index values are expected to exceed 100 degrees.

The hottest conditions are expected in Upstate South Carolina and northeast Georgia, where the heat index could reach 100 to 105 degrees. Heat advisories may be issued later this week as temperatures continue to climb.

“The heat is one of the most deadly weather hazards,” the weather service said, urging residents not to underestimate the dangers of prolonged exposure.

Along with the heat, isolated afternoon and evening thunderstorms remain possible each day, primarily in the mountains and areas west of Interstate 26. Forecasters said one or two storms Monday could become strong to severe, producing damaging wind gusts.

Rain chances for Asheville remain relatively low through Tuesday before increasing slightly during the middle of the week.

The Asheville forecast calls for mostly sunny skies Monday with a high near 89 degrees and only a slight chance of afternoon showers or thunderstorms. Similar conditions are expected Tuesday before temperatures climb to around 94 degrees Wednesday and near 95 degrees Thursday. Afternoon thunderstorms remain possible each day.

Forecasters said an upper-level ridge of high pressure will strengthen over the eastern United States this week, limiting widespread rainfall and allowing temperatures to continue rising through the holiday weekend with little sign of significant relief.

Residents planning to spend time outdoors are encouraged to drink plenty of water, take frequent breaks in the shade or air conditioning and avoid strenuous activity during the hottest part of the day. Officials also reminded people never to leave children or pets unattended in vehicles, where temperatures can become deadly within minutes.