Temperatures climb into the upper 80s to lower 90s Wednesday and Thursday, with heat indices possibly approaching 100F. Overnight lows will only fall into the upper 60s to lower 70s offering limited relief. Afternoon and overnight thunderstorm chances may locally affect high temperatures and heat indices. Heat and humidity could present hazardous conditions for those engaged in outdoor activity or to those that do not have access to air conditioning. Reduce outdoor activity, drink plenty of water, and wear lightweight, light colored clothing.