◂ Event Timeline

May 30, 2018WEATHERUS

Minneapolis/St. Paul Records Earliest 100-Degree Temperature as Heat Wave Sets Dozens of Record Highs in Midwest and Plains (RECAP)

A Plains and Midwest heat wave over Memorial Day weekend set dozens of daily record highs and record May heat in several cities. Minneapolis/St. Paul hit 100 degrees, the earliest in the year on record for the Twin Cities.

WHY IT MATTERS

Early-season heat and dryness raise concern about crop stress in the US corn belt, which can add a weather premium to corn and soybean futures if it persists into June.

AFFECTSCorn▲

SOURCE
weather.comMay 30, 2018

Price reaction & history

Corn▲bullishSO FAR1d -1.0%5d -2.3%20d -8.2%

After 1,465 past bullish weather events, Corn moved a median +0.2% over 5 sessions (54% higher; middle half -1.4% to +1.9%), and +0.9% over 20.

Apr 20, 2023This spring brings worry rather than rain for some parts of the Great Plains and Midwest-1.0%
Mar 27, 2025Scientists expect more drought this year in parts of the Midwest and Great Plains | NPR Illinois+0.3%
Feb 27, 2018Dry weather conditions and high temperatures likely to reduce harvests in Southern Africa+1.6%
Jun 21, 2021Hot, dry weather stresses crops in heart of the Corn Belt and Northern Plains - Pro Farmer-3.3%
Jul 1, 2026July Heat Wave Puts Midwest Corn and Soybeans Under Pressure+3.0%

Moves of each commodity's benchmark from the last close before the event. Historical reads pool past events of the same kind; they describe what happened, not what will. Not investment advice.

Corn CORN · GP ▸

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