I feel your pain. I haven't been riding my bike, but it's by choice, because I wanted to focus on running. However, the weather has been crappy, indeed!!! And I can't believe the amount of snow we're getting either!! (The good thing: I can run in the snow. Riding would be another thing...)

I know it's not that easy in your neck of the woods, but what about swimming? Or spinning classes?

Something else might be long walks in the snow (enjoy it while it lasts). If you're dressed appropriately (esp. boots), it's a great workout (walking in the snow is much harder) and the white coat makes you kind of euphoric...

But you can also tell yourself that it's okay to take a break and to catch up on other things, like reading, spending quality time with friends or family, etc...