This past weekend I did a 5 lb baseweight trip on the Goodwater loop in Georgetown, Texas, about 20 miles north of Austin.
I did the entire loop plus a few sidetrails over two days, Total packweight at the trailhead was 12 lbs 1 oz with 2.5 L of water.
Highs of 65 and lows in the 20's at night, with condensation freezing on the tent wall at night.
Here's some pics
At the trailhead.