# Iowa's Scorching September: Record Heat Impacts Harvest Season (2026)

> Iowa recorded one of its warmest September starts on record, with a statewide average of 79.8 F and about half the normal rainfall for the week. Corn harvest progress reached 17%, seven points behind last year and two behind the five-year average.

- Date: 2026-10-31 · published 2026-11-01T06:13:12.738Z
- Category: weather · region US · magnitude low
- Page: https://feedsoft.ai/events/4414-iowa-s-scorching-september-record-heat-impacts-harvest-season-2026
- Commodities: [Corn](https://feedsoft.ai/c/CORN.md)

## Why it matters

Delayed harvest and late-season heat can affect corn drying costs and grain quality, which can modestly support nearby corn prices.

## Read by commodity

- CORN: bullish ▲

## Similar past events

| Commodity | Date | Event | 5-day % | 20-day % |
| --- | --- | --- | --- | --- |
| CORN | 2026-04-01 | [Iowa Had Its 20th-Driest Winter on Record. Here’s What That Means for This Year’s Crop](https://feedsoft.ai/events/13008-iowa-had-its-20th-driest-winter-on-record-here-s-what-that-means-for-this-year.md) | -1.7% | +1.5% |
| CORN | 2022-10-21 | [Unease ahead of 2023 grain harvest as record U.S. dryness spreads](https://feedsoft.ai/events/13320-unease-ahead-of-2023-grain-harvest-as-record-u-s-dryness-spreads.md) | -0.9% | -1.4% |
| CORN | 2026-06-23 | [Record heat puts French grain harvest at risk \| Science-Environment](https://feedsoft.ai/events/18752-record-heat-puts-french-grain-harvest-at-risk-science-environment.md) | -4.1% | +3.5% |
| CORN | 2019-12-10 | [Brazil's Planting Season Ends Dry, U.S. Corn Harvest Ending Cold](https://feedsoft.ai/events/55418-brazil-s-planting-season-ends-dry-u-s-corn-harvest-ending-cold.md) | +4.3% | +3.9% |
| CORN | 2026-09-02 | [Global Seasonal Climate Update - Target season: September-October-November 2026 - World \| ReliefWeb](https://feedsoft.ai/events/17394-global-seasonal-climate-update-target-season-september-october-november-2026.md) | -1.0% | +3.2% |

## Sources

- bryonteez.org: https://bryonteez.org/article/iowa-s-scorching-september-record-heat-impacts-harvest-season

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