Weather Underground Conditions and Forecast at Logan - Nice, simple presentation of both current conditions and forecast
NOAA Current Conditions at Logan Airport - For the purists, just the facts from NOAA - Current Temp, Wind and Pressure
NOAA Coastal Marine Forecast - All NOAA's marine forecasts for Southern New England...be prepared to scroll.
Sailflow - Our not-too-secret vice, we honestly can't live without it. Not free, though. But want to know in a glance what it's blowing, where? Want breeze-focused forecast discussions written for sailors? One word: Sailflow.
IWindsurf - Good, free wind forecast tables from the Sailflow people.
AccuWeather - General weather site, easy on the eyes, not too light on content