Highest temperature in San Francisco on August 13?

Platform comparison

Market context

San Francisco's weather on 13 August 2026 will be shaped by late-summer atmospheric conditions in the Bay Area, where marine layer influence typically moderates peak temperatures even during warm periods. The settlement mechanism relies on Weather Underground's Daily Observations table from San Francisco International Airport Station, which records sub-hourly readings rather than the rounded summary figures often cited in forecasts. This distinction matters: the highest instantaneous temperature reading may differ from the daily high reported in standard weather summaries.

Historical August temperatures at SFO show considerable variability. The airport's August average high sits around 72°F, though the station has recorded readings exceeding 90°F on roughly one in five Augusts over the past two decades. The 0% crowd probability suggests traders are pricing in confidence that temperatures will remain below the lowest threshold option, likely reflecting typical late-summer marine conditions that keep coastal San Francisco cooler than inland Bay Area locations. August 2024 saw SFO peak at 85°F; August 2023 reached 89°F.

Traders should monitor National Weather Service forecasts released in the week preceding 13 August 2026, particularly any high-pressure systems that could suppress marine layer development. Pacific sea-surface temperatures and upper-level ridge positioning in early August will signal whether conditions favour warming. The Weather Underground Daily Observations table updates continuously through the settlement window closing at 12:00 UTC on 13 August, so the final recorded temperature depends on afternoon heating patterns on that specific date.

Methodology

Sports-specific comparison page for Highest temperature in San Francisco on August 13?. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.

Resolution & payout

Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.

FAQ

Are prediction markets better than sports betting?

Prediction markets tend toward tighter odds than bookmakers because they use peer-to-peer exchange rather than bookmaker margin. On major matches, Polymarket quotes typically sit 2-5% closer to the true probability model than bet365 or DraftKings.

Can I bet on individual matches?

Yes, Polymarket lists every major Premier League / Champions League / World Cup match as its own market. Liquidity varies — top matches like El Clásico or a semi-final often have six-figure pools, lower-league games closer to three-figure.

What are live sports odds on Polymarket?

Some top-tier matches stay open during play — you can trade the half-time probability in the 70th minute. Polymarket mid-prices update second-by-second; any frontend mirroring the order book shows the same movement.

How fast do sports winnings settle?

Once the official league outcome is logged in the UMA Oracle (typically 1-2 hours after the final whistle), Polymarket's smart contract triggers USDC payout. To your wallet within minutes.

What's the difference between match odds and outright odds?

Match odds cover a single game ("Bayern beats BVB"). Outright odds are long-term aggregates ("Bayern wins the league"). Outright markets have deeper liquidity; match markets have faster resolution.