Shanghai June 12 Peak Temp: 31C at 31%

Shanghai sits at 31 degrees Celsius on the prediction market board for June 12, and the weather data is pointing in multiple directions at once. The market has priced 31C at exactly 31% implied probability, which tells you traders see this as a genuinely open contest across a wide temperature range. Early June heat patterns in the Yangtze River Delta make anywhere from 29C to 33C plausible on any given day.

The market question asks specifically: what will the highest temperature in Shanghai be on June 12? The 31C outcome carries a YES price of $0.31 and a NO price of $0.69. The contract resolves at noon UTC on June 12, 2026, with total volume at $1,934. That is a thin market, and thin markets move sharply on new information.

How the 31C Contract Works

This is a discrete temperature outcome market. YES on 31C pays out if Shanghai records exactly 31 degrees Celsius as its daily high on June 12. The market resolves against verified meteorological observation, not forecast models. The resolution source is market resolution, meaning the platform will confirm against official temperature records.

• YES ($0.31): Shanghai’s June 12 daily high is exactly 31C.
• NO ($0.69): Shanghai’s June 12 daily high is any temperature other than 31C, including 30C, 32C, 33C, or anything outside that band.

The NO side has real structural weight here. Eleven discrete temperature outcomes span the full range from 25C or below to 35C or higher. For 31C specifically to miss, Shanghai only needs to hit 30C or 32C instead. Shanghai’s June climate average sits around 28C to 30C for daily highs, but early June 2026 has already shown warmer-than-baseline conditions across eastern China. A 31C reading is plausible but not dominant in a field this wide.

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Momentum and Market Signals

The momentum composite here is quiet. The 1-hour price change is flat at 0.0%, and the trend score sits at 39.52, which is below the midpoint. The 6% price move on June 10 is the only significant recent signal, suggesting some fresh positioning as the contract entered its final 48 hours. That move connects most likely to updated short-range forecast models being incorporated by traders watching synoptic weather charts for the Yangtze Delta.

Total volume is $1,934, with all of that volume arriving in the last 24 hours. Liquidity is $25,691, which is meaningfully deeper than the volume traded. That gap matters: the order book has capacity, but actual trading conviction is low. When a market has this volume profile this close to resolution, a single new forecast update or a shift in the European or American weather model can move the price hard. The market is pricing uncertainty here, not science.

Key Factors

• The 1-hour price change is flat, and the 24-hour trend score of 39.52 reflects below-midpoint conviction on the 31C outcome specifically.
• Volume of $1,934 in 24 hours is very thin. Any meaningful new weather forecast could reprice this contract significantly before June 12 noon UTC resolution.
• Shanghai’s June climatological average daily high runs 28C to 30C, putting 31C at the upper edge of normal variability.
• Eleven competing outcomes divide the probability pool, limiting any single outcome from reaching dominant pricing without strong forecast consensus.
• The June 10 price move from $0.28 to $0.31 suggests fresh positioning, likely triggered by updated short-range model output favoring slightly warmer conditions.

Lines Analysis: Shanghai June 12 Temperature

The case for 31C rests on the direction of recent model trends. The June 10 price bump from $0.28 to $0.31 indicates at least some traders are reading the latest synoptic setup as favorable for above-average warmth. Shanghai’s June 12 position in the calendar places it near the start of the East Asian plum rain season, when surface temperatures can stay elevated between rain events. If a high-pressure ridge sits northwest of Shanghai on June 11 and 12, daytime heating can push readings into the low 30s.

What makes 31C miss is simpler. A cloud deck, early rain, or sea breeze intrusion shaves 1 to 2 degrees off the peak with ease. The 30C outcome sits just below and the 32C outcome sits just above, each carrying their own probability slice. Shanghai’s temperature distribution on any given June day is not a spike at one value. It is a spread. For exactly 31C to resolve YES, the thermometer has to land in a precise one-degree band, not just be warm.

Signals to Monitor

• The European Centre for Medium-Range Weather Forecasts 72-hour deterministic run for Shanghai on June 11 will be the clearest pre-resolution signal.
• China Meteorological Administration official forecasts for Shanghai, typically updated twice daily, will carry resolution authority.
• Any cloud cover or precipitation forecast for June 12 morning over the Yangtze Delta would push probability toward the 28C to 30C band.
• A sustained surface high-pressure anomaly over eastern China on June 11 would favor 32C or 33C, pulling probability away from 31C.
• Sea surface temperature anomalies in the East China Sea can suppress or enhance Shanghai daytime highs by 1 to 2 degrees through onshore flow.

Total volume of $1,934 is thin enough that this market reflects individual trader positioning more than crowd wisdom. The data from weather models is sharper than the market signal right now. Traders with access to real-time ensemble forecasts have an informational edge here that the current price does not fully reflect.

LINES VERDICT

WIDE OPEN, WATCH THE MODELS

Shanghai’s June 12 temperature range is genuinely uncertain, and the 31C outcome is one of eleven plausible results. The data does not favor a strong lean toward any single degree reading without current short-range model output pointing there.

What the market says: 31C carries a 31% implied probability as of June 10, 2026, reflecting balanced uncertainty across a wide temperature band. With resolution on June 12, this contract is fully exposed to the next 48 hours of forecast updates. A single model run could shift the price hard in either direction.

Key unknown: The June 11 afternoon synoptic setup over eastern China is the single most important factor. If high pressure dominates and cloud cover stays minimal, 31C to 33C become the leading outcomes. Rain or persistent cloud changes everything.

Scientific Context

Shanghai’s June climate is shaped by the East Asian monsoon transition. Daily high temperatures in early June average 27C to 30C, with significant day-to-day variability depending on whether the baiu front (the seasonal rain band) has pushed north. In years when the front stalls south of Shanghai, temperatures climb into the low to mid 30s. In years when the front sits directly over the city, highs stay below 30C. The 2026 season context from Phase 1 research shows eastern China has been running above normal for surface temperatures in the early summer period, which shifts the distribution slightly toward the warmer outcomes. That makes 31C to 33C collectively the stronger probability band, but no single degree dominates.

What would move this market before June 12 noon resolution: any official China Meteorological Administration forecast placing Shanghai’s June 12 high at exactly 31C, or a strong model consensus narrowing the range. Absent that specificity, the market stays distributed.

What is the 31% probability actually telling me?

It says traders assign a 31-in-100 chance that Shanghai’s June 12 high lands exactly at 31C. The remaining 69% is spread across ten other temperature outcomes.

What does NO pay out on?

NO pays out if Shanghai’s June 12 daily high is anything other than 31C. That includes 30C, 32C, 33C, or any reading outside that exact value. NO covers ten of the eleven possible outcomes.

What data would move the price most?

An updated short-range weather model run, especially from the European Centre or China Meteorological Administration, showing a specific temperature forecast for June 12 would reprice this contract significantly given the thin volume.

When does this contract resolve?

The contract resolves at noon UTC on June 12, 2026, based on verified official temperature records for Shanghai’s daily high.

Is volume reliable here?

Total volume is $1,934, which is very thin. Liquidity at $25,691 is deeper than trading activity, meaning the order book exists but conviction is low. Price can move sharply on minimal new trading.