Dangerous early season extreme heat is on tap for parts of Texas this week in a prelude to what’s expected to be an abnormally hot summer nationwide.

South Florida isn’t under a heat advisory or extreme heat warning yet. But the region is heading into “one of the hottest stretches of the year,” according to CBS News Miami. And based on the expected upcoming temperatures, the risk for heat stroke could be high.

Temperatures across the counties under the extreme heat warning are expected to rise to at least 105 degrees, which can cause heat-related illnesses.