I use Weather Underground.

Use one of the Boston news station ones. While their temp forecasts on the numbers-only screens generally draw from similar sources, we have a lot of nuance here, especially when it comes to snowfall or where is going to get storms and where won’t that you will want and which the national weather apps don’t provide. Also, the Boston ones take into account proximity to ocean lowering or radiating temperatures and affecting snowfall where the national apps just throw one temperature out for the entire region. (For example, it can easily be 90+ in central MA and 70-75 in Rockport and Gloucester…)

There's an app called eWeather that gives regional forecasts for Southern New England (he's based in CT, but discusses the whole reagion. You'll get the nuance that is often missing from the TV station forecasts, but not as much detail on specific locations.

All weather apps and stations get most of their data from the government. Meaning that you'll pretty much get the same predictions no matter what. Some places just have way more predictable weather than others. In Chicago, it is very difficult to predict the weather. But in Boston it is much easier.

Follow “the New England weather guy” if you’re on FB - he’s great (and doesn’t dramatize the forecast).