Your evening Massachusetts weather update Right now we're sitting at comfortable temperatures in the upper 60s, but that warmth will fuel storm development as we approach the 72-degree high around 6 P.M. That's when the first thunderstorms will begin firing up, particularly across western sections. The main window for severe weather runs from 6 to 10 P.M., with the strongest storms likely between 7 and 9 P.M.