Lowest temperature in Chicago on Jun 19, 2026?

Prediction market odds reflect real-money trader positioning and often diverge from traditional meteorologist forecasts because markets incorporate broader information sets and incentivize accuracy through financial stakes. While weather analysts publish deterministic or probabilistic forecasts based on atmospheric models, this market prices uncertainty dynamically as new data arrives. Comparing the two reveals whether professional consensus and market participants agree on the likelihood of specific temperature outcomes, and any gap may signal either market inefficiency or factors analysts haven't fully weighted.

On Kalshi, this market is priced through an order-book mechanism where traders buy and sell shares corresponding to different temperature ranges. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Each outcome contract trades independently, and the bid-ask spread reflects the market's confidence in that range. As traders place orders, prices adjust to equilibrate supply and demand, with higher prices indicating stronger collective belief that a particular temperature outcome will occur. Settlement occurs once the actual low temperature is verified and confirmed.

This market resolves around Jun 20, 2026, after June 19, 2026 concludes and the day's lowest temperature can be verified. The outcome is determined by the actual recorded low temperature in Chicago on that date, confirmed once credible public reporting makes the final value available. Traders holding shares in the correct outcome range receive their payout, while incorrect positions expire worthless. The resolution process is automatic once the temperature data is official and published.

Major weather pattern shifts, seasonal climate anomalies, and updated long-range forecasts from meteorological agencies will influence trader positioning in this market. El Niño or La Niña developments, unexpected cold fronts, or heat waves tracked weeks in advance can trigger significant repricing. Additionally, historical temperature records for Chicago in mid-June and real-time atmospheric model updates will drive trading activity. As June 19 approaches, short-term weather forecasts become more precise, typically narrowing the range of plausible outcomes and concentrating liquidity around the most probable temperature bands.