Home / Prediction Markets / Science / Guangzhou July 3 Peak Temp: 34°C at 27.5% Guangzhou July 3 Peak Temp: 34°C at 27.5% ☆ Watch Paper Trade View on Polymarket → Share SR Sofia Renard Climate & Science Analyst Embed NEW Embed this market Full Compact Copy Published July 1, 2026 6 min read Lines Verdict YES at 100% implied probability NARROW MISS LIKELY: The structural spread across eleven outcome buckets suppresses the 34°C contract regardless of overall heat. Market probability: 27.5%. 100% Market Probability 1h +0.0% 24h +75.3% Trend Moderate (65/100) Volume $107.1K $88.1K in 24h Liquidity $227.2K Deep liquidity Time Left 7 hours Resolves Jul 3 107K Vol. Jul 3, 2026 1H 6H 1D 1W 1M ALL Select lines to display 34°C $19K Vol. 100% Buy Yes 100¢ Buy No 0.1¢ 27°C or below $3K Vol. 0% Buy Yes 0.1¢ Buy No 100¢ 28°C $9K Vol. 0% Buy Yes 0.1¢ Buy No 100¢ 29°C $10K Vol. 0% Buy Yes 0.1¢ Buy No 100¢ 30°C $9K Vol. 0% Buy Yes 0.1¢ Buy No 100¢ 31°C $6K Vol. 0% Buy Yes 0.1¢ Buy No 100¢ Guangzhou sits in the middle of its most dangerous heat window. Early July in the Pearl River Delta routinely pushes daily highs into the mid-thirties, and the market is asking whether July 3 lands precisely on 34°C. The YES contract trades at 28 cents, implying a 27.5% probability. That is not a confident bet. It is a calibration problem: the spread across eleven outcome buckets dilutes any single strike price, and 34°C is just one of many plausible landings. The market question asks for the highest temperature in Guangzhou on July 3, 2026, with resolution at 12:00 UTC on that date. The YES price sits at 0.28 against a NO price of 0.73. Total volume is $4,446, all of it transacted in the last 24 hours. The contract closes July 3. How the Thirty-Four Degree Contract Works This is a single-outcome slice of a multi-bucket temperature market. YES pays if the official daily high in Guangzhou on July 3 registers exactly 34°C. NO covers everything else: 33°C, 35°C, 32°C, 31°C, 36°C, 37°C or higher, 30°C, 29°C, 28°C, and 27°C or below. YES (0.28): Guangzhou records a peak of exactly 34°C on July 3.NO (0.73): The daily high lands on any other temperature band, above or below 34°C. A NO payout does not require cool weather. Guangzhou hitting 36°C pays NO just as surely as Guangzhou hitting 30°C. The 34°C bucket loses whenever the actual high diverges from that exact band in either direction. That structural reality is why a hot July day does not automatically favor YES. Sponsored Partner Momentum and Market Signals The composite signal here is bearish for the 34°C outcome. The YES price dropped 7% in the past hour, moving from roughly 0.30 toward 0.28, with a trend score of 50.03 sitting right at neutral. That intraday drop suggests traders are either shifting toward adjacent buckets (35°C or 33°C) or fading the 34°C contract as forecast models update. Total volume is $4,446, with all of that arriving in the last 24 hours. Liquidity stands at $49,269, which is deep relative to the volume traded. Here’s what the measurements are telling us: this market opened thin, attracted a burst of activity today, and now sits on a wide order book that can absorb moves without large slippage. Volume this low means a single informed trader with a few hundred dollars can shift the YES price meaningfully. Treat current pricing as a starting point, not a settled signal. The YES price fell 7% in the hour before this writing, the sharpest directional move in the contract’s brief trading history.Volume of $4,446 over 24 hours is well below the $1 million threshold that would indicate broad market conviction.Liquidity at $49,269 is unusually deep for a micro-market, suggesting a market maker is actively posting both sides.The trend score of 50.03 is effectively neutral, confirming no strong directional momentum despite the hourly drop.Open interest registers at zero, meaning no positions are being held overnight into resolution. Lines Analysis: Guangzhou Temperature Distribution on July 3 The data doesn’t care about the politics, and in this case it also doesn’t care about the overall heat signal. Guangzhou’s early July climatology supports highs in the 33°C to 36°C range. That is good news for traders expecting a hot day. It is not particularly good news for the 34°C bucket specifically, because that same climatology distributes probability mass across at least four adjacent outcomes. July averages in Guangzhou hover near 33°C to 34°C, but daily variance is wide enough that 35°C and 36°C readings are common, and occasional overcast or rainy days can push highs to 31°C or 32°C. What makes a NO outcome real here is not cold weather. A reading of 35°C or 36°C, entirely plausible given Guangzhou’s July heat and the current regional pattern, pays NO. So does a rain-cooled 32°C. The 34°C contract is structurally disadvantaged by the precision of the ask: it wins only on a narrow band in a distribution that spans ten buckets. Any adjacent outcome collects the NO payoff. The market is pricing uncertainty, not science, and right now the uncertainty is high enough to suppress YES well below 30%. A National Meteorological Center forecast update for the Pearl River Delta before July 3 resolution would be the single most important data point for repositioning this contract.Regional radar showing an approaching trough or typhoon peripheral cloud cover would push probability toward the 31-33°C buckets and weaken the 34°C case.A sustained ridge of high pressure holding over Guangdong Province through July 2 would shift mass toward the 35-37°C buckets, also at the expense of the 34°C contract.Humidity and sea surface temperature anomalies in the South China Sea influence overnight lows, which in turn constrain how high daily peaks can climb. Total volume of $4,446 is thin. The data favors caution rather than confidence in either direction. Guangzhou will almost certainly be hot on July 3. Whether that heat lands precisely on 34°C is a coin flip with worse odds, spread across many competing outcomes. LINES VERDICT NARROW MISS LIKELY Guangzhou will almost certainly record a hot day on July 3, but the 34°C contract asks for a precise landing in one of eleven buckets. The structural probability math, not the temperature forecast, is what keeps YES near 27.5%. What the market says: At 27.5%, the market treats a 34°C high as a one-in-four shot. With only two days to resolution and all volume arriving in a single 24-hour window, this price can swing sharply on any new forecast model run or official weather service update. Key unknown: The China Meteorological Administration’s next official forecast for Guangzhou on July 2 or the morning of July 3 is the single data release that would reprice this contract. A point forecast near 34°C would lift YES; a forecast of 36°C or a storm flag would collapse it. Frequently Asked QuestionsWhat does 27.5% probability mean for the 34°C outcome?It means traders currently estimate a roughly one-in-four chance Guangzhou's peak temperature lands exactly on 34°C on July 3. Ten other outcome buckets compete for the remaining probability.How does the NO contract pay out here?NO pays if Guangzhou's daily high on July 3 is anything other than 34°C. That includes hotter outcomes like 35°C or 36°C and cooler readings like 32°C or 33°C.What data release would move this price the most?An official China Meteorological Administration point forecast for Guangzhou on July 2 or early July 3 would directly reprice the 34°C contract, especially if it targets an adjacent temperature band.When does this market resolve?The contract resolves at 12:00 UTC on July 3, 2026, based on the official recorded daily high temperature in Guangzhou.Is the $4,446 in volume enough to trust the current price?No. Volume this low means a single trader with a few hundred dollars can shift the YES price significantly. Current pricing reflects limited participation, not broad market conviction.How is the Smart Money Index calculated?We aggregate the live positions of the top 50 Polymarket whales (ranked by 30-day tracked volume) into one composite reading per market. It refreshes every hour. The percentage shows how many of those whales hold YES versus NO; the net dollar position shows the cohort's directional exposure in dollars.What is a convergence signal?A convergence event fires when three or more tracked wallets buy the same outcome on the same market within a four-hour window. We surface these in the activity feed and the VIP digest.Is Lines a market operator?No. Lines is an editorial and data product. We do not operate prediction markets, custody funds, or accept trades. All trade flows deep-link to Polymarket via our affiliate code. Probabilities shown are market-implied and not predictions or recommendations. What Could Shift These Probabilities? Forecast Locks on Thirty-Four If the China Meteorological Administration issues a point forecast of exactly 34°C for Guangzhou on July 2, traders would consolidate positions in this bucket. A stable ridge of high pressure holding daytime highs in the mid-thirties without pushing into 35°C or 36°C territory would lift YES toward 40% or higher. Heat Runs Hotter Than Expected A strengthening subtropical high over Guangdong Province could push the July 3 high to 36°C or 37°C. That outcome pays NO just as definitively as a cool day. Forecast models trending warmer than 34°C would drain probability from this bucket quickly given the thin volume base. Rain Cools the Region to Exactly Thirty-Four Peripheral cloud cover from a South China Sea disturbance could cap peak temperatures, pulling highs down from the upper thirties into the 33°C to 35°C zone. If that moderation targets 34°C specifically, YES could recover from its current 27.5% level as adjacent cooler buckets lose ground. Typhoon Peripheral Rain Reshuffles All Buckets A developing tropical system in the South China Sea could send rain bands over Guangzhou on July 3, collapsing daily highs into the 30°C to 32°C range. That outcome would devastate both the 34°C YES contract and several adjacent hot-weather buckets simultaneously, concentrating probability in the cooler outcome bands. Key macro factor: South China Sea sea surface temperatures running above the 1991-2020 average in early July support an elevated baseline for Guangzhou heat, but tropical disturbance activity in the same region introduces meaningful day-to-day variability that a single-date temperature contract cannot hedge away. Market Timeline Jul 1, 4:03 AM Market Created Jul 1, 4:04 AM Market Opened 12:00 PM Market Resolution Place paper trade No real money × Highest temperature in Guangzhou on July 3? Outcome 34°C · 100% 27°C or below · 0% 28°C · 0% 29°C · 0% 30°C · 0% 31°C · 0% 32°C · 0% 33°C · 0% 35°C · 0% 36°C · 0% 37°C or higher · 0% YES $1.00 NO $0.00 Stake (USD) $100 $500 $1,000 $5,000 Pick a market to see how many shares you would hold. 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