Highest temperature in Houston on August 3?

Platform comparison

Market context

Houston’s payout will be driven by the *highest* Fahrenheit reading recorded at William P. Hobby Airport on 3 August 2026, so the relevant question is whether the day ever produced a clearly hot afternoon spike rather than what the overnight low looked like. In late July and early August, Houston typically sits in the mid-80s Fahrenheit on average, but forecast and long-range sources still show frequent daytime highs in the upper 80s to mid-90s, which means a zero-per-cent crowd price looks more like a thin market than a strong view on the weather itself.[1][6][14][17][19]

The historical frame matters because Houston’s summer heat is usually driven by the broader Gulf Coast pattern: high humidity, strong solar loading, and a small but meaningful chance of a much hotter-than-average day when clouds are limited. AccuWeather’s August data and Houston climate pages show average highs around the low-to-mid 80s, while long-range guides point to typical August daytime maxima in the high 80s to mid 90s, so settlement bands near the upper end of summer norms are common enough that traders usually focus on whether the airport actually prints a 95°F-plus day rather than on average monthly temperature alone.[1][6][17][19]

For a prediction-market read, the main catalysts are the on-chain mechanics and the final weather print, not macro risk appetite. This contract settles in USDC, so the practical risk is data finality: Robinhood’s contract language notes resolution only after Weather Underground has published the completed daily summary table for the station, which can lag until the first observation of the next day appears.[5] If the August heat pattern coincides with broader crypto volatility, funding and BTC/ETH flows may affect positioning only at the margins, but the outcome itself is determined by the Hobby Airport historical record rather than exchange prices.[5]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically this overview focuses on on-chain pricing: Polymarket's live mid comes from the Polygon conditional-token order book and settles automatically in USDC. The other three venues — Kalshi, Betfair, Manifold — sit alongside as off-chain reference points so you can see how the contract translates across regulatory and settlement regimes.

Resolution & payout

Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.

Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.

FAQ

Why USDC and not ETH or USDT?

USDC is the Polygon standard — audited reserves (Circle, monthly attestation), deepest order book, low gas costs. ETH volatility would distort probability quotes; USDT has thinner Polygon liquidity than USDC.

What does a transaction cost on Polygon?

Polygon gas is typically under $0.01 per transaction. A full trade cycle (Approve + Order + Fill) totals around $0.03 — compared to $5-50 on Ethereum mainnet.

How volatile are crypto prediction markets?

Crypto markets react to spot prices — a 5% BTC move typically shifts a "BTC above X by date" market 10-20%. Polymarket crypto market liquidity is usually six-figure USD, sufficient for active trading.

Which crypto markets exist on Polymarket?

Currently active markets include BTC/ETH/SOL price targets, halving dates, ETF approvals, hard-fork outcomes and Layer-2 TVL thresholds. The list updates weekly; biggest volume sits on BTC and ETH price forecasts.

Are crypto prediction markets taxable in the US?

In the US, prediction market gains are typically treated as ordinary income or short-term capital gains depending on holding period. Consult a tax professional for your specific situation — we cannot provide tax advice.