Refrigerated trucking is running hot in the second week of May, and the latest DAT and ACT Research data confirms what every reefer dispatcher is already seeing on the load board. National reefer spot rates are sitting roughly 22 percent above the same week last year, with the per-mile average about $0.44 above 2025 and $0.51 above the five-year average. The capacity crunch is being driven by two produce regions hitting full stride at the same time. Watermelon volume out of Florida is up 11 percent year over year, accounting for more than half of the watermelon shipments moving nationally, and Salinas strawberry truckload volumes are up 19 percent week over week and 12 percent year over year. When two regions push that much temperature-controlled freight into the system simultaneously, the small carrier who can get a reefer trailer in the right yard at the right time prints money.

The pattern is not unusual for May. What is unusual is the size of the year-over-year premium. The reefer spot market has been in soft territory for most of 2024 and the first part of 2025. The 2026 produce season landed on top of a much tighter underlying capacity base, with Class 8 truck orders running 199 percent above the prior year and small reefer carriers already squeezed by insurance and fuel cost pressure. The result is a much sharper run-up than the typical seasonal lift. Carriers who built reefer capacity for the moment are riding the rate elevator. Carriers who deferred reefer growth out of caution in 2024 are watching it happen from the outside.

The next three to six weeks are the highest-leverage window of the year for an owner-operator running reefer. The freight is out there, the rates are out there, and the question is execution. That means knowing where to position empty trailers, which receivers pay reefer claims fairly, which brokers are working real Florida and Salinas freight versus reposting other peoples’ loads, and how to manage HOS hours against the appointment windows that produce shippers actually accept.

What The DAT And ACT Data Actually Says

According to the most recent DAT reefer freight demand report, Miami is effectively maxed out for outbound reefer capacity, with Mother’s Day flowers, the CVSA Roadcheck inspection blitz, and the watermelon volume all colliding inside Florida’s final big freight window of spring. Outbound reefer load-to-truck ratios are running well above the national average across the Lakeland, Plant City, and Miami markets, which is what is pushing rates up the fastest. The same DAT data confirms that strawberry volumes out of Salinas are running 19 percent above the prior week with continued growth expected as the harvest extends through June.

ACT Research’s reefer rate tracker tells the same story from a different angle. The national reefer spot rate average is now $0.51 above the five-year average for this week, and contract rates have been catching up faster than they did during the 2022 cycle peak. Carriers who run on contract reefer are seeing rate increases of 5 to 9 percent on quarterly renewals, and brokers who relied on cheap spot reefer through 2024 are getting pushed into higher-cost relationships to keep service intact. That is a structural shift, not a Mother’s Day blip.

The combination of watermelon entering the highest-volume window in mid-May and strawberry holding its run-up means the Florida-to-Northeast lane and the Salinas-to-Midwest lane are the two highest-leverage routes on the board right now. Both lanes pay above $3 per mile on a regular basis through the season, with peaks above $3.50 when capacity gets stuck behind a Roadcheck delay or a holiday weekend. The carrier that knows how to time the bid to those windows is the carrier that runs higher revenue per truck for the next 30 days.

The Florida Watermelon Window Is Already Open

Watermelon out of Florida is the marquee commodity of the late spring reefer market. Florida watermelon production is 11 percent higher year over year in 2026, and the state is accounting for 53 percent of the watermelon shipments moving nationally. Watermelons surged ahead of potatoes as the top truckload commodity by tonnage in the past 30 days. The picking centers around Immokalee, LaBelle, Wauchula, and Plant City. The outbound corridor splits roughly evenly between the Mid-Atlantic markets, the Northeast, and the Midwest, with growing volume into the Texas border for cross-border distribution.

The watermelon load itself has specific quirks small reefer carriers need to know. Watermelons load heavy. A standard 53-foot reefer carries somewhere around 42,000 to 45,000 pounds of melon, which puts a tractor at or near the federal axle limit depending on equipment weight. Drivers running rented or leased tractors with heavier axle packages are usually fine. Drivers running lightweight tractors need to scale on the way out, or risk a citation that blows up the load profitability. The receivers also reject hard. A bruised pallet of melon does not get a partial credit. It gets refused, and the driver eats a backhaul empty. The carriers who run watermelon successfully use thermal blankets, run the reefer in cycle mode rather than continuous to prevent freeze marks on the bottom of the load, and slow down on rough roads through Florida’s secondary highways.

Where small carriers are getting tripped up right now is the CVSA International Roadcheck overlap. The 72-hour inspection blitz that ran May 12 through 14 hit at exactly the worst time for outbound Florida produce. Carriers who pre-tripped tight and got back on the road by mid-week Thursday are catching the back end of the rate spike. Carriers who got an out-of-service order for brakes, tires, or load securement saw their week disappear. We covered the Roadcheck preparation playbook in depth when we walked through how the 2026 ELD tampering focus shaped this year’s inspection blitz, and the carriers that took that prep work seriously are the ones in position to capture the reefer rate window now.

Salinas Strawberry Volume Is Lighting Up The West Coast

Salinas is the other end of the country, but the dispatch lessons are largely the same. Strawberry truckload volume out of Salinas is up 19 percent week over week and 12 percent year over year. The harvest ramps through May and June, with peak shipments through the Watsonville and Salinas corridor pushing eastbound rates through the roof on the LA to Chicago and LA to Dallas reefer lanes. The catch is that California strawberry receivers are strict on cold chain documentation. A pulp temperature out of spec at receiving is a rejected pallet, and a rejected pallet on strawberry is a serious dollar amount.

Carriers running strawberry should be pulling pulp temperatures at the dock, taking dated photos of the thermograph download at unload, and pushing back on receivers who try to claim temperature damage without the documentation to support it. The 3PL middle layer on California strawberry has been pushing carriers harder on claims through 2025 and 2026. The carriers who survive that pressure are the ones who own the temperature record and present it cleanly. None of this is new, but May is the month when sloppy reefer documentation turns from an annoyance into a serious claims problem.

The Salinas-to-Midwest lane is also where the smartest small fleets are testing back-haul economics. Empty reefer reposition is the killer on West Coast freight. Carriers who can pick up cheese, beef, or frozen prepared foods on the return leg out of Chicago, Kansas City, or Dallas are running a much higher revenue per mile than the carriers running empty back to California. The brokers who facilitate matched-pair lanes are the ones worth building a relationship with right now, even at slightly worse spot rate, because the round-trip economics outpace the better-paying one-way load.

The HOS And Receiver Math That Decides The Week

The hidden constraint in reefer produce season is hours-of-service planning against receiver appointment windows. Florida watermelon receivers in the Northeast typically want delivery between 4 AM and 10 AM. Salinas strawberry receivers in the Midwest typically want delivery between 6 AM and 11 AM. That forces the long-haul leg into specific overnight driving patterns that compress drive-time flexibility. A driver who starts the run with 70 hours available and a fresh 11 ends up with a much harder schedule than the same driver running general dry van freight on flexible appointment windows. Carriers who run team operations or who plan the trip with a relay driver pickup at the halfway point are getting paid noticeably more for the same lane than solo operators who lose a full day to a 10-hour reset.

Detention pay is the other math problem. Receivers during produce season are often two to four hours behind appointment, and the carriers who do not invoice detention give that time away. Build the detention clock into the rate confirmation up front. If a broker will not put detention terms in writing, find a different broker. The reefer market is tight enough this month that the carrier is the one with leverage, not the broker. Use it.

How To Position Trucks For The Next Two Weeks

If you have reefer capacity sitting in the upper Midwest or the Pacific Northwest right now, the highest-leverage move is to reposition toward Florida or Salinas within the next 72 hours. The rate premium will hold through Memorial Day and into the first week of June, then taper as Georgia and the Carolinas pick up the slack on watermelon and as Salinas hits its peak. Trucks running on the inbound to Florida should be looking for fertilizer, beverage, or general dry that pays the leg into the produce zone. Trucks running to Salinas should be looking at California Bay Area inbound dry van or contract reefer to Northern California distribution centers.

Carriers with dry van capacity wondering whether to flip a trailer to reefer for the season should be cautious. Reefer trailers run 30 to 40 percent more expensive than dry van trailers, and the operating cost on fuel and unit maintenance is meaningfully higher. The season is real, but the season ends. Spot-buying a reefer trailer in May to chase a six-week window usually loses money on the round-trip math. Renting a reefer for the season from one of the major leasing companies is the better path. Many reefer lessors are quoting four-to-eight-week summer leases now that price the produce season directly. The carriers running that math will outperform the carriers who panicked into a purchase.

Bottom Line For Reefer Owner-Operators

The 2026 produce season is paying carriers who are positioned correctly, with reefer spot rates running 22 percent above 2025 and 22 percent above the five-year average. Florida watermelon volume up 11 percent and Salinas strawberry volume up 19 percent are the two engines. The window runs through Memorial Day and into early June before tapering. Carriers should pre-trip aggressively after the Roadcheck blitz, run reefers in cycle mode on watermelon, document pulp temperatures end-to-end on strawberry, plan HOS around tight delivery windows, and invoice detention every time. Renting a reefer for the season beats buying. Repositioning to Florida or Salinas inside the next 72 hours puts a truck on the highest-paying lanes the calendar has to offer. The carriers who treat the next four weeks as a short-window earning sprint walk away from May and June with a real cash buffer. The carriers who run produce season the same way they run November freight leave money on the table.

Innovative Logistics Group