Lowest temperature in Seattle on May 30, 2026?

Prediction market odds on Kalshi reflect aggregated trader expectations and often incorporate the latest meteorological data and seasonal climate patterns. Traditional weather analysts and the National Weather Service issue probabilistic forecasts based on numerical weather models, but these are typically issued much closer to the event date. Comparing market-implied probabilities now to official forecasts released in May 2026 can reveal whether traders are pricing in more optimistic or pessimistic temperature scenarios than the consensus meteorological view at that time.

On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. On Kalshi, the lowest temperature in Seattle on May 30, 2026 is priced as a set of discrete temperature range outcomes, with each outcome assigned an implied probability based on trader buy and sell orders. Prices move as new information—such as updated climate models, historical temperature patterns for late May, or broader seasonal anomalies—enters the market. Traders bid and ask on their preferred temperature ranges, and the midpoint of the spread reflects the current market consensus for what Seattle's low temperature will be on that specific date.

The market resolves on May 31, 2026, after May 30, 2026 has concluded and the official lowest temperature for Seattle on that day is recorded. Resolution is determined by the actual observed minimum temperature in Seattle on May 30, 2026, sourced from official meteorological records. The outcome is binary or categorical depending on the specific temperature ranges offered; whichever range contains the recorded low temperature determines the winning outcome and settles all positions accordingly.

Several factors could shift market odds before resolution. Updated seasonal climate forecasts and long-range weather models issued over the coming months will influence expectations for late May temperatures in the Pacific Northwest. Historical patterns, such as typical May lows in Seattle and any anomalies in spring warming trends, matter significantly. Additionally, broader climate events—El Niño or La Niña conditions, Arctic oscillation patterns, or unusual jet stream behavior—could alter the probability of cooler or warmer outcomes. As May 2026 approaches, medium-range forecasts will become increasingly precise and drive final price adjustments.