How I keep my front door from getting dirty from weather? I clean it.

You really can't an additional door that you never open screen on might help but you will have to continue to clean. It's like dust in house. Never ending.

Mine gets filthy dirty too, I just clean it periodically. Anything exposed to the elements will need cleaning ever so often. If a smooth door, some people put car wax on the door to make cleaning easier. Might be something to consider.

The closest thing I can think of to keeping it looking clean is to paint it the color of the dirt - just kidding. LOL Seriously, even if you put on a storm door, that will keep your door cleaner, but you will then have a storm door that gets dirty. In the summer, hose it off occasionally, that will help. When it bugs you take out a bucket of warm, soapy water and the largest sponge you can find. Hose the door, wipe it down with the large sponge and hose again. In the winter, I can't even get to my front door because we don't shovel the snow off the sidewalk to that door (we have a side door that also faces the front between the house and the garage.) so I just ignore it. My front door is black, although we're getting a new one tomorrow that is white (sigh). My side door is deep blue, like the shutters on our house and it's behind a full glass storm door. It doesn't look that dirty and in all honesty, I know there's not much I can do about either one so years ago I 'let it go' and stopped worrying about it. All of my neighbors are in the same position so we all just let it go for the winter.

HTH

You need something that will be slippery. Depending on the surface of your door, you could try one of those polymer waxes used for cars.

Try some wax!

Why and how is it getting dirty? I think that's the underlying question. If mud and dirt are getting on it, then you need to make sure you have pavers or something to cover the earth around and up to your door.