we don't have snow storms here, so, we don't have that problem....we do, however, have things such as... heat storms. humidity storms. mosquito storms. we even have dry storms. hehe....
humidity storms are the worst, though, at 90% and 100 degrees it kinda sucks. the air is soaked and the ground dry and rock hard...
like yourself we have periods here when it is completely unfavorable and enjoyable to be outside digging holes. i read up on the history of my area and try to hunt down roads that are in really old sections of town. just be creative in occupying yourself with the past that exists today in the present underneath you.
you can use google maps to find and select areas of your interest then set markers to them. then come the warmer days you have a whole arsenal full of new leads you have "dug" up.
i just found the exact location of where my city was started. it only came from reading and talking to a couple of people and turns out i know exactly where it is and have been over there many times andnever knew of its history. All thats left is a very small cemetery and historical marker in the midst of all that my city is.....
NY, i imagine, is a very exciting place to hunt if you research. GOOD luck with that winter, you'll need it.