He won’t let me near him. So Taking him inside isn’t gonna happen.
Mostly he just digs in people’s trash looking for scraps. I’ve set a bowl of kibble out by the trash cans.
Is there anything else I can do? It’s get’n awful cold out and I feel so bad for the little guy. 
You can make him a shelter- there are plenty of instructions online if you google, and how-to videos on Youtube. If you can spend the money, there are very nice outdoor cat shelters available on Amazon, from basic to elaborate. Some are practically palaces.
[Moderating]
I don’t see anything relating to art, here. Since it’s asking for advice, I’ll move it to IMHO.
Also, you know the rule about cat threads.
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Have you tried stopping growling at him?
Do you know anyone in the shelters in your area? They might come and trap her and then spay and release. Or maybe it just a scared housepet they can rehab and find a home for her. It’s worth a shot.
Brilliant! I just sat the cat carrier outside. Put towels on the inside and covered the top with a blanket. Hope he likes it.
Funny, my cats typically avoid the cat carrier like the plague. But after I stuffed it with towels, suddenly, they want to be in the cat carrier! Lol.
That’s gonna be hard. He’s an elusive cat!
Thanks. If I can gain his trust. I’ll take him in myself. 
As an aside: One of the strays around my mom’s house was scared of all humans, for her first two or three years. But she’s since gotten to the point where petting her is not an option. It’s mandatory. She will literally refuse to let you feed her until after she’s been petted.
So yes, it’s possible that you might win this cat’s trust. No guarantees, of course: You can never tell with cats, after all.
I have a cat carrier with the door missing (making it useless as a carrier) that I put out on our front porch just in case any of the local “strays” need shelter. Blanket in side, towel over the top for warmth. From time to time I see one in there.
Setting out food and water is good. Slowly moving the food toward the carrier might help him see it as a safe place. Good luck! Hopefully he comes to trust you.
I adopted one of the neighborhood strays this way. I put out food and water in a somewhat sheltered spot and kept them filled. After a time, I added a blanket next to some nearby bushes. I did put out a cat carrier, but he never went for that. I never figured out where he slept, but he did become my buddy. We had a daily chat (AKA pet session) and I took him in for shots and flea meds and such). He was a sweet guy.
We’ve trapped a few kittens that seemed feral and frightened, and they warmed right up in a few days. I think this feral versus friendly trait is something that is learned early in life and there’s some leeway in how early it has to start and how completely it works. YMMV.