"click" a cold weather noise?

[TMass]

OK; had the boxster in the garage the last 2 weeks with out driving because of cold and other stuff took up time. I pulled it out today and "suddenly it arose with a leap" there was a clicking sound from the engine like a lifter seeking relief. I ran in circles with panic it my eyes and wondered what could be this time? I took it for a spin and within 5 miles it was as quiet as a mouse.....upon returning home i parked in the driveway and jumped out. Not a "click "or a "cli" could be heard as I stood beside the magnificent beast. So please tell me is this the norm for a cold boxster or should I take it to my mechanic with haste? This sound has not been present until now.