Bolt torque vs. temperature

[SilverXJ]

How much does the ambient temperature effect bolt torque? Its 40* out and I am concerned that the temperature may adversely effect the torque. I'm concerned with the rod, main caps and head bolts.

[IH 392]

I've assembled engines all thrue the year from freak'n cold in the shop to sweat'n your ass off and never gave it a first thought? much less a second one, the only thing I ever gave any consideration to was the head bolts, I always tried to torque them before lunch and let the gasket "relax" and come back later and check them again (unless it's a "torque to yield" or "* turn torque"), they always will tuns some, never had a head gasket blow.
The only issues we ever saw due to temperature were machining components at the extremes of the year and then they were tight or loose!