Crap! Here in Florida we've had some very cold temps the past few days. We went, basically, from the 80's to the 30's-40's and the battery in my car is about to croak. The last two days it had that hesitant crank when the key is turned, then fired right up and ran well showing a good 14.6 charging value.
Today it was just a bit more hesitant on the cold crank so I'm taking it in to the dealer tomorrow (if it starts ok, or my power jumper jumps it).
I've had the (used car) for 6 years and it's the battery that came with it. No idea how old it is before that, so it's time for a newbie. I've been half-expecting this for the past year, so...
Other than that, HECK! .. everything's ok, I reckon.