12 - 20 pounds, depending very much on where and when I'm going. Higher weights are for winter or early/late shoulder seasons or otherwise relatively severe conditions. Lightest weights tend to be trips where I don't anticipate a lot of rain (or other precip).

Further muddying the waters is that I think that sometimes folks will go out on a base-camping or other low (with a full backpack) mileage trips that aren't necessarily their norm, but include a higher base weight for camp comfort or the like.

For what I would call "3-minus" season trips (late spring, summer, early fall), my base weight tends to be in the 13 - 16 pound range, perhaps that's an answer that fits better with what you're asking (?).