Yeah, I noticed it was clear driving home but also freezing, the best weather for it!
During the day I always find myself looking for things that would make a decent composition, maybe go back to some places you might have taken pictures of in the daytime. Set the camera up in manual before you leave (30 sec, ISO 1600, wide aperture, 2 second timer etc) make sure you know how to infinity focus your lens and um, wrap up warm, it quickly gets cold standing there waiting for 30-120 sec exposures.
Try and get to remote place too, cameras pick up light pollution so easily, somewhere with hills around you helps. I also usually take my dog for a bit of protection and a good LED torch with adjustable output so you can see what you're going to be shooting as well as light painting a subject. Enjoy