June-to-July is a transitional period for freight volumes. Summer demand is still elevated but produce season fades, and early back-to-school shipments start thinning out. The ATA Truck Tonnage Index tends to flatten or dip slightly in this window on a non-seasonally-adjusted basis. MoM growth from June to July would be a bullish signal that the for-hire freight recovery has staying power heading into the second half of 2026. The Cass Freight Index shipments component has been declining year over year throughout 2025 and into 2026, making any positive truck tonnage momentum noteworthy.