Diesel dips to $6.41, but a truckload of California lettuce to Chicago cost 18% more in a week

By Rachel Whitfield·October 1, 2026·7 min read·Tariff & Price Watch

Salinas to Chicago refrigerated truck rate up 18% in a week while diesel dips to $6.41, September 30, 2026

⚡ What happened, in 30 seconds

AAA's national average for diesel was $6.414 a gallon on September 30, 2026, down 2.5 cents in a day and 11.4 cents below the record of $6.528 set on September 22.
Spot truck rates for produce went the other way. USDA's report for September 29 puts a refrigerated load from Salinas-Watsonville to Chicago at $6,600 to $6,900, up 18 percent from September 22.
US distillate stocks fell 2.3 million barrels to 105.2 million in the week ending September 25, which is 14.9 percent below a year earlier (EIA, released September 30).
Distillate exports rose to 1.529 million barrels a day from 1.331 million the week before. No federal order restricts them.

Key facts

AAA's national average price for diesel was $6.414 per gallon as of September 30, 2026, compared with a record $6.528 on September 22, 2026, $5.604 a month earlier and $3.700 a year earlier (AAA Gas Prices, September 30, 2026).
The spot rate for a refrigerated truckload of lettuce, broccoli, cauliflower or strawberries from Salinas-Watsonville, California to Chicago was $6,600 to $6,900 on September 29, 2026, up 18 percent from September 22 (USDA AMS Specialty Crops National Truck Rate Report, September 30, 2026).
US distillate fuel oil stocks were 105.2 million barrels on September 25, 2026, down from 107.4 million on September 18 and from 123.6 million on September 26, 2025 (EIA weekly series, released September 30, 2026).
US exports of total distillate were 1.529 million barrels per day in the week ending September 25, 2026, up from 1.331 million in the week ending September 18 (EIA weekly series, released September 30, 2026).
The Brent crude spot price was $113.96 per barrel on September 29, 2026, down from $119.97 on September 28 and from $130.80 on September 15 (EIA, released September 30, 2026).

This is a fast-moving story. Prices, tariffs and policy in this brief were correct as of October 1, 2026 and can change from one day to the next; we update when the primary sources do.

What happened

Diesel kept sliding. AAA had $6.414 on September 30, after $6.439 the day before and $6.522 a week earlier. EIA's Monday survey was $6.382 on September 28, down 14.7 cents on the week and $2.628 above the same week of 2025.

The truck market did not follow. USDA's Agricultural Marketing Service surveys what shippers pay on the spot market for a 48 to 53 foot refrigerated trailer, and its report for Tuesday, September 29 shows Chicago-bound loads up sharply from every California vegetable district: Salinas-Watsonville $6,600 to $6,900 (up 18 percent in a week), Santa Maria $7,500 to $7,900 (up 17 percent), the South and Central district $7,600 to $8,000 (up 19 percent). Carrots from Kern County to Chicago rose 10 percent.

The East Coast picture is mixed. Santa Maria to New York was $10,300 to $10,800, up 6 percent, and to Miami $11,500 to $12,400, up 14 percent. Salinas to New York slipped 2 percent to $9,900 to $10,400. AMS rates truck availability as "slight shortage" across the California vegetable districts and "shortage" for Washington apples and pears, where a load from Yakima to New York ran $11,700 to $15,000.

Underneath, the fuel supply got tighter. EIA's September 30 data show distillate stocks down 2.3 million barrels to 105.2 million, the lowest since August 28. Refiners made 5.003 million barrels a day, down from 5.159 million. Domestic use was 3.948 million barrels a day and exports were 1.529 million.

What has not happened

No export restriction is in force. The newest items on the White House Presidential Actions page are dated September 29 and none concerns fuel. The Federal Register published nothing on diesel or distillate exports through September 30.

Crude did not climb back to its high. Brent was $113.96 on September 29, against $130.80 on September 15.

The freight jump has not appeared in any official grocery price yet. USDA's latest reading is food at home unchanged from July to August 2026 and 2.2 percent above August 2025. September CPI is not out. No source we found puts a number on how much of an 18 percent rise in a spot truck rate reaches the shelf price of a head of romaine, and AMS covers spot loads only, so produce moving under contract may be paying something different.

Which foods are exposed

Food	Why it is exposed	Domestic fallback
Lettuce, broccoli, cauliflower, strawberries (California)	Chicago loads up 17 to 19 percent in a week; trucks in slight shortage	Cabbage, carrots, frozen broccoli and berries
Apples and pears (Washington)	Yakima to New York $11,700 to $15,000 a load; trucks in shortage	Apples grown in your own region, where there are orchards
Citrus (California)	AMS lists truck shortage; rates unchanged on the week	Frozen orange juice concentrate, Florida fruit later in the fall
Carrots (Kern County)	Chicago and New York loads up 10 percent	A 5 lb bag keeps for weeks in the fridge
Tomatoes, peppers, limes (Mexico via South Texas)	Rates fell to Dallas (down 7 percent) and New York (down 6 percent); trucks in slight surplus on most lanes	Canned tomatoes for cooking
Dry goods and canned food	Not covered by the AMS produce report; weekly diesel fell 14.7 cents	Rice, beans, canned tomatoes by the case

What to do this month

Buy produce by distance. In the Midwest and the East, October apples, potatoes, onions, cabbage and winter squash come from closer than Salinas, and they keep for weeks. I am holding salad greens to one bag a week and buying cabbage at the store's per-pound price for slaw.

Use the freezer aisle for the California crops. Frozen broccoli and berries do not depend on this week's truck, and the sale price on a 12 oz bag is printed on the shelf tag.

Make no change on the strength of export headlines. There is no order and no date.

What it means for your cart: A cautious planning estimate: keep October's grocery budget at September's level and expect the pressure, if it comes, on West Coast fresh produce in Midwestern and Eastern stores. For scale, our arithmetic on USDA's numbers: a $10,000 load to New York spread over 40,000 pounds, the unit AMS uses to count shipments, is about 25 cents a pound of freight. AMS does not publish freight per pound, and a single week of spot rates can reverse. USDA's forecast for all of 2026 remains food at home up 2.4 percent, in a range of 1.8 to 3.0 percent. We will update when next Tuesday's truck report and the October 6 EIA diesel survey are out. The calculator shows how much of your basket is fresh produce.

The monthly numbers behind this brief, USDA forecast, BLS shelf prices and diesel, are on the food prices 2026 tracker.

Editorial note: this brief was drafted with AI assistance from the sources below and checked by our editor before publication. Read How we work.

Sources

AAA, as of Sept 30, 2026 — National average fuel prices
USDA AMS, Sept 30, 2026 — Specialty Crops National Truck Rate Report (FVWTRK)
EIA, Sept 29, 2026 — Gasoline and Diesel Fuel Update
EIA, Sept 30, 2026 — Weekly U.S. Ending Stocks of Distillate Fuel Oil
EIA, Sept 30, 2026 — Weekly U.S. Exports of Total Distillate
EIA, Sept 30, 2026 — Weekly U.S. Refiner and Blender Net Production of Distillate
EIA, Sept 30, 2026 — Weekly U.S. Product Supplied of Distillate
EIA, Sept 30, 2026 — Europe Brent Spot Price FOB
USDA ERS, Sept 25, 2026 — Food Price Outlook, Summary Findings
White House, checked Oct 1, 2026 — Presidential Actions index
Federal Register, queried Oct 1, 2026 — Document search for "diesel export" and "distillate export"

Frequently Asked Questions

Is diesel still at a record?

No. AAA's national average was $6.414 a gallon on September 30, 2026, which is 11.4 cents under the record of $6.528 set on September 22. It is still 81 cents above a month ago and $2.71 above a year ago.

Why did produce truck rates rise while diesel fell?

USDA's report gives the rates and the truck supply, and it gives no cause. It rates truck availability as "slight shortage" in the California vegetable districts and "shortage" for Washington apples, so fewer available trucks is part of what the report itself shows. No source we found splits the increase between fuel and truck supply.

Will lettuce cost more at my store?

Possibly in the Midwest, where spot loads from California to Chicago rose 17 to 19 percent in the week to September 29. No source we found puts a number on the shelf-price effect, and stores that buy under contract may not pay the spot rate.

Has the US restricted diesel exports?

No. As of September 30, 2026 there is no presidential action and no Federal Register rule restricting diesel or distillate exports. EIA counted 1.529 million barrels a day of distillate exports in the week ending September 25.

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Rachel Whitfield

Rachel covers food economics, household budgeting, and consumer strategies for beating grocery inflation. She is the author of The Tariff-Proof Kitchen.