My 2016 Fit EX, with 55,000 miles, started last night when it was zero degrees F out. Pushed the button,started right up. Didn't even think about how cold it was.
And then this morning, 12 degrees, same thing.
Original battery.

 

I never had a problem starting my 2015 EX stick in cold weather. Starts right up.

 

@Brain Champagne It's almost like things are running the way they are supposed to.

 

Yes! But I would have understood if a six and a half year old tiny battery wouldn't start a car that cold.

It went down a degree as I was driving. First time I ever saw a minus sign on a thermometer that wasn't attached to a freezer.