Highest temperature in Dallas on June 28?

Platform comparison

Market context

On 28 June 2026, Dallas Love Field will record its peak temperature for the day, a single real-world datum that determines the outcome of this prediction market. The crowd currently assigns a 0% probability to the “YES” outcome, implying traders believe the temperature will fall outside the specified range, likely below the threshold. This near-total certainty is unusual for a weather event in early summer, where variability typically prevents such definitive positioning.

Historically, Dallas on 28 June has seen extremes ranging from 96°F in recent years to an all-time high of 110°F recorded in 1980[6]. June 2026 forecasts suggest daily highs between 96°F and 100°F, with overnight lows of 77°F–83°F[3]. The 0% implied probability may reflect a misalignment with these ranges, or a specific threshold that traders deem unattainable. Platforms like Kalshi often use implied probability, while Polymarket and Betfair favour decimal odds, creating divergent pricing signals for the same event. Fee structures and KYC requirements also vary: Kalshi mandates identity verification, whereas Polymarket allows anonymous trading, influencing liquidity depth and trader participation.

Traders should monitor the National Weather Service’s hourly updates for KDAL, which already show a high of 88°F at noon on 28 June[4]. Any sudden shift in cloud cover or wind patterns could alter the peak temperature. Recent forecasts from AccuWeather confirm the 96°F–100°F range for June 2026, reinforcing the likelihood of a high near 97°F[3]. Smarkets and Kalshi differ in settlement speed and data sourcing; Kalshi relies on official government feeds, while Smarkets may incorporate third-party aggregators like Wunderground, the designated resolution source here. These structural differences can lead to temporary arbitrage opportunities before final settlement.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares Highest temperature in Dallas on June 28? specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Kalshi Alternative UK, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). On-chain settlement clears in minutes — the fastest payout path of the four.

FAQ

What does Polymarket cost vs Kalshi?

Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.

Is Betfair a Polymarket alternative?

Only partially. Betfair Exchange is UK-focused with a sports-betting emphasis; they have politics markets but with thinner liquidity than Polymarket. Settlement in GBP/EUR, 2-5% commission on winnings.

Which platform is accessible globally?

Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Kalshi Alternative UK has a different geo footprint and routes to Polymarket's order book at 0% fees.

Are all these platforms regulated?

No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.

Which platform supports Klarna/SOFORT?

Directly: none. Polymarket accepts only USDC on Polygon. Kalshi Alternative UK offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.