Potentially dangerous summer heat has settled into the region. According to the National Weather Service, daytime highs will climb into the mid-90s through Monday evening. Overnight lows will only drop into the mid-to-upper 70s, providing little relief. Heat index values are expected to top 100 degrees in the afternoon and early evening hours. A heat advisory is in place through Sunday night. Those who need to be outdoors for activities should take extra precautions, including frequent hydration and air conditioning breaks, and avoid prolonged, strenuous activities. Above-average temperatures remain in the forecast through next Wednesday.