funny sound coming from the front.

i have a 97 accord and recently when i go over bumps there seems to be this creaking or moaning sound coming from the front suspension. it only happens when it gets cold, like 40 or colder. i was wondering if this is naturaly and if there is anything to do to prevent the sounds? someone suggested i spary the spring with silicone and will take care of it, but i sometimes question their knowledge about cars.

Sounds like newer bushings might be needed our your bushings need to be regreased.