TOTAL VOLUME:
$134.2b
24H VOL:
$130,522,377
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,438,389,636
404,028
Markets across
30,214
events
MATCHED EVENTS:
2,681
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 1, 4:00 AM EST
Kalshi
This market tracks the overnight low temperature in Las Vegas on June 30, 2026, divided into six temperature bands. The outcome will be determined by the official National Weather Service daily climatological report for the Las Vegas area.
Resolution is based on the minimum temperature recorded at Las Vegas on June 30, 2026, as reported in the National Weather Service's Climatological Report (Daily) for Las Vegas, NV. The official data source is accessed through the NWS website at the specified URL under the Observed Weather tab. Temperature bands are: 64°F or below, 65-66°F, 67-68°F, 69-70°F, 71-72°F, and 73°F or above. Each band resolves to Yes if the recorded minimum falls within its range. 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 preliminary readings or third-party weather services.
Prediction market odds often diverge from traditional weather forecasts because they incorporate real-time trader behavior and collective intelligence rather than relying solely on meteorological models. While meteorologists issue deterministic forecasts based on atmospheric data, this market aggregates the beliefs of many participants with financial incentives to be accurate. Traders may weight recent climate patterns, historical June temperatures, or emerging weather systems differently than official forecasts, sometimes leading to notably different probability estimates for extreme heat scenarios.
On Kalshi, this market is priced through an order-book mechanism where traders submit bids and asks for shares corresponding to different temperature outcomes. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Prices reflect the collective willingness of buyers and sellers to commit capital to specific temperature ranges, with each contract representing a claim on whether the low will fall within a given band. As new information emerges or trader sentiment shifts, the bid-ask spread tightens or widens, and prices adjust to equilibrate supply and demand.
This market resolves around Jul 1, 2026, after the June 30, 2026 low temperature in Las Vegas is recorded and verified. The outcome is determined by the actual minimum temperature observed on that date, confirmed once the event is verifiable from credible public reporting. Traders holding shares in the correct outcome receive their payout, while incorrect positions expire worthless. Resolution typically occurs within hours of the close of the trading day on which the temperature is finalized.
Major climate patterns, seasonal forecasts, and long-range weather models will influence trader positioning as June 2026 approaches. El Niño or La Niña conditions, shifts in the jet stream, or unusual atmospheric blocking could signal hotter or cooler conditions. Real-time weather updates in late June will drive sharp repricing, especially as the forecast cone narrows. Historical heat waves, urban heat island effects, and any anomalies in spring or early summer temperatures may also prompt traders to adjust their bets on the final low.