Cold Weather starting

I have a 2000 Saab 9-5 at the end of last winter the car would start right up and then immediately stall first thing in the morning. This would continue until the car sat for about three minutes then it would start and not stall. The car would run fine not hesitation. I was about to take it to a garage for repair when the weather warmed up +40 degrees and the issue stopped. It has started fine and run well all spring /summer/ fall. In the last week we have had some cold nights and the issues has happened again on those cold nights. Any suggestions??

Check the idle air control valve.