Here's some possible help for getting through the winter ... a virtual substitute for plein air painting. I've added a link labeled "Virtual Paint Out" (see right side column) that goes to a blog created by the painter Bill Guffey. Every month Bill provides a location for painting. This month it's Philadelphia. Last month it was Rome, Italy. Participants can then go to Google Earth and use the Street View feature to find a scene to paint. Paintings can then be submitted to Bill Guffey and he posts them on his blog.
Obviously it's not the same as actual plein air painting but I found it fun. I did do a Rome painting (with Roman ruins in it, of course) and I'm currently working on a painting of the downtown Philadelphia skyline. Check out Bill's blog for a more detailed explanation and instructions.
I haven't got out for snow painting quite yet (this coming week may be promising) but I did recently re-paint an old painting and am posting it below. This is the Rutledge Street bridge across the Yahara River in Madison.