Noise in front end of car

i have a rattling noise coming from my front end it happens when the temp drops below 60 when its above that i barely hear it.i have had the front end checked and they found nothing.i have had the struts has 150k.any ideas?

Rubber bushings which are more pliable when warm get harder when cold. ( A-arms, sway bars, trailing arms etc. )
Finding these will be the puzzle as it takes a bit of force to result in noise.

On my 92 Explorer I simply chose to live with it and no problems ever arose from the rattles and thumps in the cold.