TOTAL VOLUME:
$134.2b
24H VOL:
$134,145,987
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,441,166,947
406,422
Markets across
30,383
events
MATCHED EVENTS:
2,688
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 10, 3:00 AM EST
Kalshi
This market tracks the lowest temperature recorded in Phoenix on July 9, 2026. The outcome will be determined by the official National Weather Service Climatological Report for that date, with resolution based on which temperature range the recorded minimum falls into.
Resolution is determined by the minimum temperature recorded at Phoenix, AZ on July 9, 2026, according to the National Weather Service's Climatological Report (Daily). The official data source is accessed through the NWS website by navigating to the Observed Weather tab and selecting Phoenix, AZ with Daily Climate Report. The recorded minimum temperature will fall into one of six ranges: 83°F or below, 84-85°F, 86-87°F, 88-89°F, 90-91°F, or 92°F or above. Each range corresponds to a distinct market outcome. Traders should note that preliminary NWS reporting may be subject to rounding and conversion nuances, and the final official NWS Climatological Report (Daily) value takes precedence over other weather data sources such as AccuWeather or Google Weather.
Prediction market odds often diverge from traditional weather forecasts and analyst models because they incorporate real-time trader conviction and incentivize accuracy through financial stakes. While meteorologists rely on physics-based models and historical data, this market reflects what informed traders are willing to bet on, sometimes revealing information gaps or consensus blind spots. Comparing the implied probabilities here to published forecasts from the National Weather Service or other meteorological sources can highlight where market participants see different risks or opportunities for the Phoenix low on that date.
On Kalshi, this market is priced through a continuous order-book mechanism where traders buy and sell shares corresponding to different temperature outcomes. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The price of each outcome reflects supply and demand; as more traders buy shares predicting a colder low, that outcome's price rises, and vice versa. Settlement values are binary or range-based, depending on the specific contract structure, and traders profit or lose based on whether their chosen outcome matches the verified result.
This market resolves around Jul 10, 2026, once the lowest temperature recorded in Phoenix on July 9, 2026 is confirmed and verifiable from credible public sources. The outcome is determined by official meteorological data, typically from the National Weather Service or similar authoritative weather reporting agencies. Traders' positions settle based on whether the actual low temperature falls within the range or threshold they wagered on, with payouts distributed accordingly once verification is complete.
Major weather pattern shifts, seasonal climate anomalies, and updated long-range forecasts can all influence trader positioning in this market. El Niño or La Niña conditions, jet stream behavior, and historical heat records for early July in Phoenix may prompt reassessment of probabilities. Additionally, as the event date draws closer, short-range forecasts become more precise, often triggering sharp price movements as traders react to improved meteorological certainty. Extreme heat waves or unusual cooling patterns elsewhere in the Southwest could also shift expectations for Phoenix's low.