Corn futures declined on Tuesday as the market reacted to de-escalation in US-Iran hostilities. The easing geopolitical tensions removed a potential supply disruption premium that had been supporting prices, leading traders to reassess corn's risk profile in the absence of immediate Middle East threats.

The retreat in corn prices came as traders shifted focus toward domestic weather patterns, particularly hot temperatures across major US growing regions. Weather forecasts showing elevated temperatures have raised concerns about crop conditions during the critical growing season, potentially affecting yield expectations for the grain.

Market participants are now weighing conflicting forces: reduced geopolitical risk versus weather-related production concerns. The corn futures drop reflects this balance as investors price in both the easing Middle East tensions and the potential impact of hot weather on US crop prospects.

Traders will continue monitoring temperature trends and crop condition reports in the weeks ahead. The US-Iran tensions easing removes one uncertainty factor, but weather remains a primary driver for agricultural commodity pricing through the growing season.