Highest temperature in Oklahoma City on May 28, 2026?

The market resolves on May 29, 2026, after the close of trading and once the official maximum temperature for May 28, 2026, in Oklahoma City is recorded. Resolution is determined by the actual observed high temperature on that date, measured by the designated weather authority. Contracts corresponding to the correct temperature range pay out in full, while all other contracts expire worthless. Traders must hold positions until resolution or exit earlier by selling at the prevailing market price. The specificity of the temperature bands means only one outcome can be correct, making this a winner-take-all event for each contract.

Several factors can shift odds for Oklahoma City's May 28 high temperature. Seasonal climate patterns and long-range weather models updated weekly will influence trader expectations of heat or cooler conditions. Major atmospheric systems—such as high-pressure domes, cold fronts, or tropical moisture—can dramatically alter the forecast as May approaches. El Niño or La Niña phases may bias temperatures warmer or cooler than normal. Real-time weather updates in the days leading up to May 28 will trigger sharp repricing as certainty increases. Historical anomalies, urban heat island effects, and any unusual circulation patterns detected by meteorologists will also drive trading activity and price movement on Kalshi.