Maine is heading into a hot and humid weekend, with temperatures near 90 degrees and several opportunities for showers and thunderstorms. Before the weekend arrives, Thursday will feature plenty of sunshine and temperatures in the upper 80s and lower 90s. Scattered showers and thunderstorms may begin developing across western, central and southern Maine late Thursday afternoon and evening. A storm will also be possible around Sebago Lake, Lewiston-Auburn and parts of central Maine later Thursday night. Coastal fog is expected to develop Thursday evening, with additional patchy fog possible across central and Midcoast Maine early Friday.