Above - early MOnday temperatures. The boundary between blue and yellow represent a wavy front which will mean rain and drizzle to the north in the cooler air...showers and storms in the warmer air - yellow. Below - threat of severe storms today in dark green and yellow.
Below- satellite- radar showing the areas of rain .....followed by amounts of rain through the end of this week.
Below - animated maps for the next couple...followed by weather map for Tuesday. Notice on that map...Boston has a high of 62...Washington DC has a high of 85....there is the boundary. Be safe.