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A dangerous early July heat wave is forecast to stress U.S. corn and soybean crops across the Midwest, northern Plains, Great Lakes and eastern U.S. Forecasters also flagged ridge-riding storm complexes with derecho risk, while the crops are entering a critical yield development period.
Heat stress during pollination and yield formation can cut yields and lift corn and soybean prices. Storm damage risk adds upside pressure if losses materialize.
farms.comFarms.com2026年7月1日在过去 1,465 次看涨的天气事件之后，玉米 在 5 个交易日内中位数变动 +0.2%（54% 上涨；中间一半区间为 -1.4% 至 +1.9%），20 个交易日内为 +0.9%。
在过去 1,079 次看涨的天气事件之后，大豆 在 5 个交易日内中位数变动 +0.3%（54% 上涨；中间一半区间为 -1.4% 至 +2.0%），20 个交易日内为 +0.9%。
各商品基准价相对事件前最后收盘价的变动。历史数据汇总同类过往事件；仅描述已发生的情况，不代表未来走势。不构成投资建议。
Forecast early-July heat wave over the Midwest during critical yield development adds weather risk premium supporting the rally.
