# Extreme heat wave raises concerns around US corn harvest | Agriculture Dive

> Heat alerts were issued across the Midwest and Northeast as temperatures were forecast above 90°F through the weekend. Crops in the central Corn Belt have not yet reached reproductive stages and should handle the heat better, but farms in the South are already reporting possible crop failure. Silking has started in the South, where heat could reduce ear size and kernel count.

- Date: 2024-06-20 · published 2024-06-20T12:00:00.000Z
- Category: weather · region US · magnitude medium
- Page: https://feedsoft.ai/events/13177-extreme-heat-wave-raises-concerns-around-us-corn-harvest-agriculture-dive
- Commodities: [Corn](https://feedsoft.ai/c/CORN.md)

## Why it matters

Heat during silking in southern regions could lower corn yields and add to supply concerns, supporting corn prices.

## Read by commodity

- CORN: bullish ▲

## Similar past events

| Commodity | Date | Event | 5-day % | 20-day % |
| --- | --- | --- | --- | --- |
| CORN | 2025-10-27 | [Good harvest — but heat, disease prevented great one \| Agriculture \| nwestiowa.com](https://feedsoft.ai/events/13052-good-harvest-but-heat-disease-prevented-great-one-agriculture-nwestiowa-com.md) | +1.4% | +2.7% |
| CORN | 2024-12-27 | [Extreme weather to persist in 2025, raising concerns for agribusiness](https://feedsoft.ai/events/13526-extreme-weather-to-persist-in-2025-raising-concerns-for-agribusiness.md) | -0.5% | +5.6% |
| CORN | 2019-04-30 | [Excessive rainfall as damaging to corn yield as extreme heat, drought \| Around the County \| Illinois Extension \| Illinois](https://feedsoft.ai/events/58933-excessive-rainfall-as-damaging-to-corn-yield-as-extreme-heat-drought-around-the.md) | +0.9% | +8.9% |
| CORN | 2026-07-01 | [July Heat Wave Puts Midwest Corn and Soybeans Under Pressure](https://feedsoft.ai/events/12984-july-heat-wave-puts-midwest-corn-and-soybeans-under-pressure.md) | +3.0% | +5.1% |
| CORN | 2023-07-27 | [How Extreme Heat Can Affect Corn Yield](https://feedsoft.ai/events/13265-how-extreme-heat-can-affect-corn-yield.md) | -13.2% | -14.2% |

## Sources

- agriculturedive.com: https://www.agriculturedive.com/news/heat-wave-us-corn-harvest-midwest-south/719392/

---
Data from Feedsoft AI (https://feedsoft.ai/). For information only; not investment advice.