Official National Weather Service observations recorded a 66°F minimum at Chicago O’Hare on September 17, 2026, aligning with the market’s leading 66-67°F outcome. Elevated overnight humidity near 100 percent, combined with 0.71 inches of rainfall and light winds, limited radiational cooling and kept the low several degrees above the 1991-2020 September average of 57-58°F. These conditions, typical of a moist late-summer air mass, explain why probabilities cluster tightly around 64-67°F ranges while lower outcomes remain discounted. Final resolution depends on the precise station and rounding rules used by the market.
Ringkasan eksperimental yang dihasilkan AI dengan referensi data Polymarket. Ini bukan saran trading dan tidak berperan dalam bagaimana pasar ini diselesaikan. · DiperbaruiView resolved

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