Nebraska’s corn crop may be better than federal officials estimated in September, but a University of Nebraska Extension climatologist says the USDA’s latest projection still appears too optimistic given the growing conditions farmers faced this year.
Dr. Eric Hunt believes Nebraska’s statewide corn yield will likely finish in the low 180s, several bushels below the USDA’s October estimate of 188 bushels per acre.
The October projection represented an 11-bushel increase from September’s estimate of 177 bushels per acre, prompting questions from producers and the Nebraska Corn Board about how such a sizable adjustment could be justified.
Hunt, who examined historical USDA forecasting errors alongside Nebraska’s growing-season weather data, said the September estimate was likely too low. But he sees little evidence supporting the October figure.
“If you just combine all those factors, I have a hard time seeing our statewide yield much above the lower 180s, which is above that 177 number, but that’s certainly under 188,” Hunt said during an interview Monday with the Rural Radio Network.
Drought conditions tell a different story
Hunt’s skepticism is rooted in what happened across Nebraska during the growing season, particularly in areas where rainfall arrived too late to prevent substantial crop damage.
By late July, more than 80% of Nebraska was experiencing drought, with more than 60% of the state classified in severe drought or worse, according to data Hunt examined from the U.S. Drought Monitor.
Some of the worst conditions occurred in northeastern and west-central Nebraska, where dryland corn yields suffered even as other parts of the state received improving rainfall.
“I think that may be kind of a distant memory for those of us living in urban areas in the east, but it was really a a pretty bad summer for a lot of northeastern and west central Nebraska,” Hunt said.
The challenges extended beyond insufficient rainfall.
Unusually warm overnight temperatures during the second half of summer limited the potential for exceptional yields. High humidity increased disease pressure, while a late-season heat wave accelerated the end of grain fill in corn.
Hunt said those conditions affected even fields that received adequate moisture during much of the growing season.
In his Oct. 21 analysis, Hunt estimated that weather conditions support a statewide yield of approximately 178 to 181 bushels per acre, with 180 bushels a more reasonable expectation.
History offers reason for skepticism
Hunt also examined USDA’s October corn yield forecasts dating back to 1986, comparing those estimates with final production figures.
The historical record shows that October forecasts have occasionally matched final yields exactly, but errors of 3% to 5% have not been unusual. Hunt found that overestimates have occurred more frequently than underestimates.
A 3% to 5% overestimate this year would place Nebraska’s final yield at approximately 179 to 182 bushels per acre.
Hunt also compared 2026 drought conditions with previous years when at least 30% of Nebraska experienced severe drought or worse.
Those comparisons suggest the October USDA estimate is near the upper limit of what historical conditions would support, rather than the most likely outcome.
However, Hunt cautioned against comparing this season directly with disastrous drought years such as 2012 or 2022. More favorable moisture conditions in parts of south-central and southeastern Nebraska likely prevented a similarly severe statewide production decline.
Final numbers still uncertain
Hunt emphasized that his concerns are not directed at USDA National Agricultural Statistics Service employees. In his written analysis, he noted that staffing reductions and potentially insufficient representative survey responses could affect the accuracy of statewide estimates.
He also pointed out that a 188-bushel yield would not represent an exceptional crop by historical standards. If realized, it would remain below Nebraska’s yield trend and six bushels below last year’s production.
Nevertheless, Hunt believes the combination of drought, heat and uneven growing conditions makes the October estimate difficult to justify.
“I’d be very, very surprised if that 188 (bpa) is verified. I think it is the theoretical ceiling for this year,” Hunt said.
USDA’s final production estimates in January will provide a clearer picture of whether the October adjustment accurately captured Nebraska’s crop.