So with that, here are a few ideas that came to mind... first up, this wool lined trench from Todd Snyder. Black, so it goes with everything, cotton outer so it's not too heavy. And hello, it's Todd Snyder so it's going to be that right mix of rugged sophistication. And it's on sale.
Next I had to include the Structured Mac from A.P.C. Every season I ogle this coat for it's slightly rounded shoulders, slightly cropped cuff, and just general great fit. It comes in beige but I far prefer the dark navy.
So this next pick is a bit on the heavier side, but for the cross between quality + price, you can't go wrong. The Mayfair Topcoat from J. Crew, produced in a blend of wool and cashmere. Soft, warm, soft, warm... it'll do it all. Here I really loved the Saddle color, and it's on sale for a deal you can't (and shouldn't) miss.
And finally, another lightweight (and rain appropriate) option in the Club Monaco 3 Layer Mac. With a subtle gray herringbone pattern, this coat is super versatile and can go with a suit or jeans. Adam Levine has been turning out great stuff over there, and with the price, it's a great addition to your closet.