Shanghai June 11 Low Temperature: Will It Hit 20°C?

Shanghai’s overnight low on June 11 sits at the center of a tight weather market with real money moving fast. The 20°C outcome carries a 48.5% implied probability, meaning traders are pricing this as a genuine coin flip between adjacent temperature brackets. Here’s what the measurements are telling us: the 24-hour price surge on this contract signals new information entered the market, likely from updated short-range forecast models.

The market question asks whether Shanghai’s lowest recorded temperature on June 11 will resolve at exactly 20°C. The YES price sits at $0.49, the NO price at $0.52, and the contract resolves on June 11 at 12:00 UTC. Total volume stands at $3,717, with $2,725 of that traded in the last 24 hours alone.

How the 20°C Contract Works

Resolution depends on the official lowest temperature recorded in Shanghai on June 11, as determined by the market’s resolution source. YES pays if the minimum temperature lands exactly at 20°C. NO pays if it lands at any other listed bracket: 19°C, 21°C, 18°C, 22°C, 17°C, 16°C, 23°C, 15°C, 24°C or higher, or 14°C or below.

• YES ($0.49, ~48.5% probability): Shanghai’s June 11 low resolves at exactly 20°C.
• NO ($0.52, ~51.5% probability): Shanghai’s June 11 low resolves at any temperature other than 20°C.

The NO side covers ten alternative outcomes. A miss of even one degree pushes the payout entirely to NO holders. Shanghai’s China Meteorological Administration stations provide official readings, and the resolution window is tight: the contract closes at noon UTC on June 11, capturing the full overnight and early morning low.

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Momentum and Market Signals

The momentum composite here is striking. A flat 1-hour change combined with a 15.5% 24-hour surge and a trend score of 48 points to a single directional catalyst: forecast models updated over the past 24 hours likely narrowed the predicted low toward the 20°C bracket. That kind of price movement in a short-duration weather market almost always traces back to model convergence.

Total volume at $3,717 is thin. The $2,725 in 24-hour volume represents nearly three-quarters of all money ever traded on this contract. Liquidity at $25,030 is healthy relative to volume, but with this little money at stake, a single informed trader placing a few hundred dollars can reprice this market sharply. The data doesn’t care about the politics, but it does care about model resolution.

• The 24-hour price change of +15.5% reflects new short-range forecast data pointing toward the 20°C bracket, not speculative momentum.
• The 1-hour flatness since that move suggests the market has absorbed the latest model run and is now waiting for the next update.
• Total volume below $1,000 before the last 24 hours means this contract was illiquid until very recently. Price can still move sharply on any forecast revision.
• Liquidity at $25,030 provides a reasonable buffer, but small orders still carry outsized influence here.
• Trader sentiment sits at 48.5% YES versus 51.5% NO, effectively split, reflecting genuine meteorological uncertainty at this resolution.

Lines Analysis: Shanghai’s June Low and the One-Degree Problem

What supports YES is straightforward. Early June in Shanghai typically sees overnight lows ranging from 18°C to 23°C, with 20°C sitting near the climatological center of that range. When forecast models converge on a number, short-duration weather markets tend to follow. The 15.5% price surge over 24 hours tells you that convergence happened. European Centre for Medium-Range Weather Forecasts and China’s own National Meteorological Center models were likely both pointing at or near 20°C as of the latest runs on June 10.

The NO side is real for a simple reason: weather forecast uncertainty at 24-hour range still spans plus or minus one to two degrees for minimum temperature. Shanghai sits near the Yangtze Delta, where sea breeze effects, urban heat island variation, and passing cloud cover can shift the overnight low by a full degree. A trough or cloud deck arriving slightly earlier or later than forecast moves this market entirely. The 19°C and 21°C brackets are the most dangerous neighbors for YES holders.

• China Meteorological Administration’s June 10 evening forecast update: directional signal for the June 11 low. Any shift toward 19°C or 21°C reprices this contract immediately.
• European Centre for Medium-Range Weather Forecasts 00z or 12z model runs on June 10 to 11: confirms or undermines the 20°C consensus.
• Shanghai urban heat island variation: if the official station records warmer than suburban readings, it nudges toward 20°C or 21°C.
• Overnight cloud cover over Shanghai: persistent cloud keeps the low warmer, pushing toward 20°C to 21°C. Clear skies allow radiative cooling toward 19°C or below.
• Sea breeze timing from Hangzhou Bay: an early morning sea breeze arrival can depress the low by one degree at coastal stations.

The market is pricing uncertainty, not science. Total volume at $3,717 reflects a niche weather market with a small but informed trader base. The data currently favors YES, given the 24-hour price surge and model convergence signals, but the NO side holds a marginal edge at $0.52 because one-degree forecast error is meteorologically routine.

Narrow YES Lean, High Fragility

Short-range forecast models have converged on the 20°C bracket for Shanghai’s June 11 low, which explains the 15.5% price surge. One degree of forecast error, well within normal meteorological range, flips this entire market to NO.

What the market says: At 48.5% implied probability, this contract is priced as a genuine toss-up. The thin volume means any late forecast revision before resolution will move the price sharply, making the hours before June 11 noon UTC the critical window.

Key unknown: The China Meteorological Administration’s final evening forecast on June 10 and the overnight model runs are the single most important data inputs. If those runs shift the predicted low to 19°C or 21°C, the market reprices fast.

Scientific Context: Shanghai June Temperature Patterns

Shanghai’s early June climatology places the average daily minimum near 20°C to 21°C, based on historical China Meteorological Administration records. The city’s urban heat island effect keeps official station readings one to two degrees above surrounding rural areas. This structural warmth slightly biases outcomes toward the 20°C to 22°C brackets versus the lower end. However, June 2026 sits within a global temperature environment where anomalies remain elevated, and short-term local weather variability still dominates at the one-day resolution this market requires. What would move the price before June 11 noon UTC is a model update showing the low tracking toward 19°C, which would send capital rapidly to the adjacent NO outcomes.

How does the 48.5% probability translate to a real outcome?

A 48.5% probability means the market believes there is roughly a one-in-two chance the Shanghai low lands exactly at 20°C on June 11. It does not mean YES is likely to win outright. Adjacent outcomes like 19°C and 21°C each carry their own probabilities.

What does NO actually cover?

NO covers every outcome except exactly 20°C. That includes 19°C, 21°C, 18°C, 22°C, and all other listed brackets. NO holders win if the official Shanghai low lands anywhere other than the 20°C bracket.

What single event would move this price the most?

A China Meteorological Administration or major global model update shifting the June 11 Shanghai low forecast to 19°C or 21°C would reprice this contract sharply within minutes of the update hitting public forecast platforms.

When does this contract resolve?

The contract resolves on June 11 at 12:00 UTC, which corresponds to 20:00 local Shanghai time. The official low is typically determined by the end of the meteorological day using China Meteorological Administration station data.

Is the volume high enough to trust the price signal?

Total volume is $3,717, which is thin. The $2,725 traded in the last 24 hours is encouraging as a directional signal, but a single trader with a few hundred dollars can still shift the price meaningfully. Treat the price as a rough guide, not a firm consensus.