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: Jun 19, 3:00 AM EST
Kalshi
This market tracks the lowest temperature recorded in Phoenix on June 18, 2026. The outcome will be determined by the official National Weather Service daily climatological report for Phoenix, which provides the authoritative minimum temperature measurement for that date.
Resolution is based on the minimum temperature recorded at Phoenix, AZ on June 18, 2026, as reported in the National Weather Service's Climatological Report (Daily). The official data source is accessed through the NWS Southwest Region Climate portal by selecting Phoenix, AZ with the Daily Climate Report option. The reported minimum temperature determines which outcome resolves affirmatively: 77°F or below, 78-79°F, 80-81°F, 82-83°F, 84-85°F, or 86°F or above. Traders should note that preliminary NWS data may be subject to rounding and conversion nuances, and the final official report should be used for resolution rather than real-time or third-party weather services.
Prediction market odds often diverge from traditional meteorologist forecasts because traders incorporate real-time data, historical patterns, and market incentives into their pricing. While weather analysts rely on numerical models and satellite imagery, this market reflects the aggregated judgment of participants who have financial stakes in accuracy. Over time, prediction markets tend to converge toward verifiable outcomes, making them a useful cross-check against single-source forecasts. Comparing the two can reveal where expert opinion and trader consensus align or diverge on Phoenix's expected low temperature.
On Kalshi, this market is priced through a continuous 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 reflects the probability traders assign to that temperature band, with prices ranging from near-zero to near-100 cents per share. Liquidity and trading volume determine how tightly bid-ask spreads remain, and prices adjust in real time as new information arrives. The platform's matching engine ensures transparent price discovery across all active outcome ranges.
This market resolves around Jun 19, 2026, once the lowest temperature recorded in Phoenix on June 18, 2026 is verified against credible public sources. The outcome is determined by the actual minimum temperature reading from that date, measured in degrees Fahrenheit. Traders' positions settle based on which outcome range the verified temperature falls into. Resolution occurs shortly after the event concludes and the data becomes publicly available.
Major weather pattern shifts, seasonal climate anomalies, and updated long-range forecasts can significantly move this market. El Niño or La Niña conditions, changes in jet-stream positioning, and historical temperature records for mid-June in Phoenix all influence trader positioning. As June 2026 approaches, short-range meteorological models become more reliable and typically trigger repricing. Breaking news about atmospheric conditions or unusual heat or cold events in the Southwest region may also prompt rapid market adjustments as traders reassess probabilities.