Rising Inflation Signs Tied to Weather in Yuma, Arizona
This week, what appeared to be a new indication of increasing inflation may have roots in Yuma, Arizona, from a few months ago.
Renowned as America’s winter lettuce capital, Yuma provides about 90 percent of the leafy greens consumed in the U.S. and Canada between November and March. In November of last year, the city recorded 1.44 inches of rainfall, significantly surpassing the usual 0.23 inches for January. This made November the eighth wettest on record, and the wettest since 2008, with nearly an inch of rain falling on just one day, November 21.
This unusual weather seems to have played a role in the peculiar inflation statistics released last week.
Producer prices for fresh and dried vegetables climbed by almost 49% in February, which contributed to over 20% of the increase in final demand goods, according to the Bureau of Labor Statistics. Initially, this raised alarms about the possibility of renewed commodity inflation.
However, one might wonder how a near 50% hike in vegetable prices could go unnoticed. Grocery shoppers would have surely noticed this change, and news outlets would likely have reported on a new affordability crisis. Surprisingly, vegetable prices in February didn’t actually rise by that much.
Digging deeper reveals a more specific issue: lettuce shortages.
Agricultural Trade Reports highlighted this problem weeks ago. Reports indicate that the supply of cold-weather lettuce has tightened due to heavy rains during Thanksgiving and unusual warmth, leading to gaps in planting and harvesting in Arizona and California. Major distributor Mercon noted that unstable weather was causing supply disruptions and price spikes.
Weather data corroborates these findings. The USDA’s Weekly Weather Crop Bulletin noted that Yuma reached a high of 81 degrees on January 14. By late February, local reports stated that farmers were hurriedly harvesting before temperatures soared into the 90s after an unusually wet fall.
The USDA market reports provide clear evidence that lettuce has been a significant factor in price rises. In mid-January, cartons of iceberg lettuce in western Arizona sold for roughly $16.50 to $17.55. By February 2, that price soared to between $33.45 and $37.55 due to “very low” supply. By February 23, prices remained elevated but settled around $25.55 to $27.55.
This kind of price movement accounts for the dramatic producer price statistics. The producer price index for lettuce surged over 100% from January to February, and other fresh vegetables, excluding potatoes, also saw increases. Meanwhile, prices for items like artichokes, beets, corn, and others either fell or barely budged, indicating that lettuce prices—not a broad vegetable surge—were chiefly responsible for the spike. Since lettuce carries the most weight in the vegetable index, significant changes in its price affect the overall index considerably. Although, it’s worth noting that prices for a few other vegetables did rise slightly.
The effect on consumer prices was not as stark. The CPI’s lettuce index climbed by 12.2% in February, while overall fresh vegetables increased by 4.1%. So, shoppers experienced a form of lettuce shock, but not to the same extreme as the grower statistics suggested.
This discrepancy illustrates the difference between the two indices. The producer price index, often labeled as the “wholesale price index,” doesn’t focus solely on wholesale prices. This naming confusion dates back to when it was called the Wholesale Price Index before 1978. The PPI actually reflects what domestic producers receive for their goods, while the Consumer Price Index indicates what shoppers pay at retail. Thus, drastic changes in narrow agricultural categories might only partially or temporarily show up at the cash register.
Like many food indices, the lettuce index can fluctuate widely month to month. The 121% surge in February was the fifth jump over 100% in three years, repeating a pattern; in July, prices more than doubled before dropping nearly 27% the following month.
By March, the situation appeared to stabilize. According to the USDA’s latest report, desert iceberg lettuce prices had returned to the $14.00 to $15.50 range—similar to levels seen in mid-January. What initially seemed like a broad signal of inflation now appears to be a short-lived disruption driven by peculiar weather in the winter lettuce region.
Despite this, February’s inflation report still holds significance. It reveals that a component drawing considerable attention conveyed a much more specific narrative than suggested at first glance. Inflation statistics can indicate broader economic patterns, and sometimes they reflect peculiar weather changes—like it getting too wet and hot in Yuma.
