The USDA's average weight for barrows and gilts in Iowa/southern Minnesota last week fell to 260.9 pounds, the lowest in nearly 3 years. The latest figure was down 2.8 pounds from previous week and 6.1 on year.

The recent heat wave and high humidity reduced feed consumption and trimmed daily weight gains in hogs and other livestock. Lighter weights mean less pork output per animal, supportive for hog and pork prices near-term.

Weights are expected to hit a seasonal low soon as cooler night-time temperatures typically arrive by mid-August, helping poundage rebound.