Extreme temperatures will have a pretty dramatic impact on batteries. Be sure you give your bike a good charge and try it again. I've had to replace my motorcycle battery a few times over the years, especially after winter.
Alternatively, you can jump-start your bike if you find a nice slope, put the bike in second gear, engage the clutch, push/walk it down the slope and dump the clutch after you get some good rolling speed. Your bike should sputter back to life, but once you stop you'll be in the same situation again.
Charge her up!