Wuhan Hit 31°C on July 1, 2026 | Lines.com

Wuhan’s highest temperature on July 1, 2026, reached exactly 31 degrees Celsius, resolving the Polymarket prediction market on this outcome at full certainty. The reading confirmed what Wuhan’s early-July climate record has long suggested: the first day of July sits squarely in the city’s scorching, humid summer belt. Traders who held the 31°C outcome from the open saw their position move from 34 cents to full resolution.

The market opened at 34% implied probability for the 31°C band, a sharp underpricing relative to historical norms. Wuhan’s average daily high for July 1 through 10 sits near 31.2°C, making this outcome the climatological center of mass. The final 24-hour volume of $86,190 out of $106,013 total tells the real story: most of the conviction arrived on resolution day, not before. The data doesn’t care about the politics, and on July 1, it delivered exactly what the long-run record pointed toward.

Wuhan Temperature Confirmed at 31°C on July 1

The 31°C reading was confirmed on July 1, 2026, closing a market that had spread probability across more than a dozen temperature bands ranging from 24°C or below to 34°C or higher. Early July in Wuhan falls just before the plum rain season concludes around mid-July, a period when daytime highs cluster tightly near 31°C and humidity keeps conditions persistently uncomfortable. The outcome matched the climatological average almost exactly.

The final hours of trading showed a market rapidly converging on reality. Three separate upward moves on July 1, totaling 58 percentage points of probability shift, confirmed that traders were reacting to real-time temperature data rather than forecasts. By the time resolution locked in, the 31°C outcome carried 100% probability. The close left no ambiguity.

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How the Market Priced a Climatologically Likely Outcome

The 31°C outcome opened at 34% implied probability and resolved at 100%. That 66-percentage-point gap represents a significant underpricing of the historically most probable temperature band for Wuhan on July 1. The market is pricing uncertainty, not science, and early positioning scattered probability across neighboring bands like 30°C, 32°C, and 33°C despite the climate record favoring 31°C.

Total volume reached $106,013, with $86,190 arriving in the final 24 hours. That 81% concentration on resolution day signals that most capital entered only after temperature data began confirming the outcome. The $96,733 liquidity pool was deep enough to support meaningful price discovery, but the late-arriving volume underscores how thinly the pre-resolution market reflected underlying climate science.

• Resolution Outcome: 31°C confirmed as Wuhan’s highest temperature on July 1, 2026.
• Article-Time Probability: 34% at market open for the 31°C band.
• Final Price at Close: 1.00 (100%).
• Total Volume: $106,013, with 81% concentrated on resolution day.
• Market Assessment: Underpriced YES. The market opened well below the climatologically expected probability for this temperature band.

What This Means for Wuhan Climate Markets Going Forward

Wuhan’s early-July temperature regime is well-documented. Average highs from July 1 through 10 sit near 31°C, with lows near 25.6°C and humidity that makes outdoor exposure taxing by midday. A prediction market structured around a single daily high in this window carries inherent spread risk because daily variability can push the peak 2 to 3 degrees in either direction. The 31°C band resolved correctly, but the margin between 30°C and 32°C is narrow enough that any given year can break either way.

For future temperature markets in this format, the key question is whether traders will front-load climate data into early pricing or again wait for real-time confirmation. The 34% opening price for the historically central outcome suggests the market structure itself, with more than a dozen possible bands, dilutes conviction even when the science is clear. Here’s what the measurements are telling us: granular temperature markets need climate-literate participants to price accurately before resolution day.

• Wuhan’s average July 1 to 10 high of approximately 31°C makes the 31°C band the most probable single outcome in any repeat market, a fact that traders can use to calibrate opening prices.
• The plum rain season ends around mid-July in Wuhan, meaning early July readings often sit in a transitional moisture regime that can moderate extremes slightly below mid-summer peaks.
• The 81% same-day volume concentration suggests a structural pattern: fine-grained climate markets attract reactive capital more than predictive capital, which limits early price accuracy.
• Future markets covering Wuhan summer temperatures would benefit from tighter band widths near the climatological median to reduce probability dilution across neighboring outcomes.

LINES RESOLUTION VERDICT

UNDERPRICED YES

The 31°C outcome resolved correctly, but a 34% opening price for the historically most probable temperature band reveals that traders spread capital too widely across neighboring outcomes rather than anchoring to the climate record.

What the market showed: The 31°C outcome opened at 34% implied probability and closed at 100%. Despite Wuhan’s July 1 to 10 average high sitting near 31.2°C, traders initially gave this band only one-in-three odds, a meaningful underpricing that corrected only when real-time temperature data arrived on resolution day.