October 31, 2016 6:36 pm NBC10 First Alert Weather: Halloween Temperatures What should trick-or-treaters expect for this Halloween? NBC10 First Alert Weather meteorologist Sheena Parveen has the update. US & World Videos 2:50 One more cool day, then warmer weather ahead 3:15 Cold night, then a big warmup this weekend 3:05 Temperatures to heat up over the weekend 2:05 Warming into the 80s by weekend's end 2:09 Big weekend warm-up expected