That is the question isn't it? As homeschoolers do we keep going when everyone else has no school due to the snow or do we allow ourselves to take some time off to enjoy all that wonderful white stuff?
I don't think there is any right answer to that one. It really all depends on what works best for your family, and that may even vary from year to year. One of the joys of homeschooling is the flexibility it gives us to do school around our lives and schedules and not the other way around.
So if you feel you need to do school even though public schools are closed then go ahead, (that is what we are doing this week as we have a big family vacation coming up next month and our homeschool co-op is also staring up next month so I don't want to fall behind anymore than we already are (-: ). On the other hand if you feel it is more important to your children to go outside and make a snowman or go sledding then by all means do that. We've done both and we have even taken a snow day or two even when the public school is still in session.
Our days off don't have to line up with the days the public school are taking off. We can manage our school schedule to fit the circumstances of our own individual families. So go ahead and do what is best for your family and stop worrying about what other schools and families are doing, and remember you can even do "school" while having fun. Field trip to Sea World anyone?
Like I always said when I worked as a Training Facilitator "Let's have fun and learn something!"