California Corn Yield & Precision Agriculture Data 2025
California Corn yield reached 173.0 bu/acre in 2025 — 13.5 bu/ac below the US average of 186.5 bu/ac. State-level estimates, sourced directly from USDA NASS.
Corn yield trend
California vs the US average, 2020–2025 (6 years of USDA NASS data)
| Year | California (bu/ac) | US average (bu/ac) |
|---|---|---|
| 2020 | 187 | 171.4 |
| 2021 | 188 | 176.7 |
| 2022 | 177 | 173.4 |
| 2023 | 178 | 177.3 |
| 2024 | 182 | 179.3 |
| 2025 | 173 | 186.5 |
How California compares
Top Corn-producing states, 2025 yield
| State | Yield (bu/ac) | vs US avg |
|---|---|---|
| Washington | 251 | +34.6% |
| Oregon | 236 | +26.5% |
| Illinois | 214 | +14.7% |
| Iowa | 210 | +12.6% |
| Idaho | 209 | +12.1% |
| Indiana | 204 | +9.4% |
| Minnesota | 201 | +7.8% |
| Nebraska | 194 | +4% |
What this data means for California Corn farmers
California corn yields have declined to 173 bushels per acre in 2025, down 9 bu/ac from 182 bu/ac in 2024 and sitting 13.5 bu/ac below the national average of 186.5 bu/ac. This pullback erases much of the ground gained since 2022, when yields held steady around 177–178 bu/ac, and marks the weakest output since at least 2020. The state's performance relative to the U.S. average is a persistent concern, as that 13.5 bu/ac gap translates to roughly $58.73 per acre in unrealized revenue at the current price of $4.35 per bushel.
Closing even a portion of that yield gap is where precision agriculture tools deliver measurable returns for California growers. Variable-rate irrigation and soil-moisture sensing are particularly well-suited to the state's water-constrained production environment, and targeted interventions that recover just 5 bu/ac would add approximately $21.75 per acre to gross revenue at current prices. Applied across a 500-acre operation, that single improvement generates over $10,800 in additional income without expanding planted area. When combined with precision nitrogen management, which can cut input costs by $15–$25 per acre while protecting yield potential, the combined margin impact can meaningfully offset the costs of adopting modern sensing and analytics platforms.
Precision ag platforms used by California Corn farmers
Overview of major platforms — features and fit for different operation sizes. No sponsored content.
Precision ag ROI calculator
Estimate annual savings for your California Corn farm based on acreage and current yield
Estimate the payback on variable-rate seeding, zone-based fertility, and overlap reduction for your farm.
Estimate only — based on industry-average implementation costs (variable-rate seeding $18/ac, zone-based fertility $22/ac, overlap reduction $9/ac; $12,000 fixed + $17/ac ongoing) and USDA yield benchmarks, not a quote.
Frequently asked questions — California Corn
Why does California corn yield at 173 bu/acre fall below the US average of 186.5 bu/acre?
California corn production faces unique challenges including high summer temperatures in the Central Valley, limited acreage concentrated in regions with soil variability, and intense competition for irrigation water that can stress crops during critical pollination stages. These factors, combined with the state's relatively small corn footprint compared to Midwest states, contribute to yields running approximately 13.5 bu/acre below the national average.
What ROI can a California corn farmer expect from precision agriculture tools at current prices of $4.35 per bushel?
At $4.35 per bushel, closing even half the yield gap between California's 173 bu/acre and the US average of 186.5 bu/acre would generate roughly $29 per acre in additional gross revenue, which can offset the cost of variable-rate seeding or soil sampling programs within one to two seasons. Precision irrigation management is particularly high-value in California given water costs, with studies showing 5–10% yield improvements from optimized in-season moisture application.
Are there USDA programs available to California corn growers to help manage yield risk at 173 bu/acre?
California corn producers can access USDA Risk Management Agency crop insurance products, including Yield Protection and Revenue Protection policies that use county-level Actual Production History to establish coverage benchmarks around current yield levels. Additionally, USDA's Agriculture Risk Coverage (ARC-CO) program provides county-level revenue guarantees, and the Environmental Quality Incentives Program (EQIP) offers cost-share funding specifically for irrigation efficiency upgrades relevant to California's water-constrained growing environment.
How do California's local growing conditions in the Central Valley affect corn production strategies for maximizing yield above 173 bu/acre?
The Central Valley's Mediterranean climate delivers reliable sunshine and warm daytime temperatures ideal for corn photosynthesis, but nighttime temperatures rarely drop enough to slow respiration losses, and the region experiences minimal summer rainfall requiring full reliance on drip or furrow irrigation systems. Agronomists working in California typically recommend selecting heat-tolerant hybrids with strong drought tolerance ratings, scheduling planting for late March to early April to align silking with the coolest available summer window, and applying split nitrogen applications timed to tissue testing results to push yields closer to or above the state average.