With the temperature at 102 degrees and climbing at 1:30 p.m. Friday, the National Weather Service has issued a heat advisory, which will remain in effect until 7 p.m.
A high of 108 degrees is possible in the Hays area, and the NWS said the mercury could reach up to 110 degrees in some areas.
Aside from a slight chance of rain or showers late Saturday night, the heat wave is expected to continue through next week, with highs of 99 to 104 projected through Thursday.
The NWS advised residents to drink plenty of fluids, to stay inside and out of the sun, and to check on relatives and neighbors — and reminding that young children and pets should never be left in an unattended vehicle.