Since we are all from different parts of the country.  What is the coldest water you guys will fish?  I'm sure some of you guys dont even see below 50 degrees. Other well are frozen up for 4 months.

The coldest I fish is high 30's.  

Mid fifties.

Low to mid 50's.

Most everything here in Colorado freezes and I am not much of an ice-fisherman so, after about October, i'm pretty much done  until March the following year............5 Months without the bait monkey!! WHOO-HOO!   ;D ;D ;D

When the water gets hard (ice ) I stop actually its more a question of the air temp. Once it stays in the 30's my butt stays on the couch  :

I'm sure it gets colder but I don't bother until it's above 40 on the surface.

As long as the water is not hard ... I will fish.