Jeddah Hit 38°C on July 7: Market Resolved Correctly | Lines.com

Jeddah recorded a peak temperature of 38°C on July 7, 2026, resolving this Polymarket outcome market at full value. The Saudi National Center of Meteorology confirmed the daily maximum, placing the city’s high squarely in the 38°C bracket. That outcome sat well within the historical range for early July on the Red Sea coast, yet above the calendar-day average of roughly 36°C.

The market opened with a 66% implied probability on the 38°C outcome and closed at 100% by resolution on July 7. Traders added $33,948 in volume in the final 24 hours alone, out of $60,282 total. That late surge reflects a market that started uncertain and converged hard on the correct answer as real-time weather data came in.

Jeddah Reached 38°C on July 7: How the Outcome Was Confirmed

The Saudi National Center of Meteorology serves as the authoritative resolution source for this market. Official station data from Jeddah confirmed the daily maximum at 38°C, clearing the resolution threshold for this specific bracket. No higher reading was logged before the 12:00 UTC cutoff, ruling out the 39°C and 40°C-or-higher outcomes.

Traders read the signal correctly in the final hours. The 38°C outcome price jumped 23.5% on July 7 alone, following a 5.5% move on July 6. Those two sessions erased the residual uncertainty that had kept the probability below 80% for most of the preceding week. By resolution, no price discovery remained.

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How the Market Performed on Jeddah’s July 7 High

The market opened this outcome at 0.66 implied probability, meaning traders assigned a one-in-three chance the temperature would land somewhere else. That was reasonable given Jeddah’s coastal variability: sea breeze timing, upper-level heat dome position, and Red Sea humidity all compress or expand the daily maximum within a narrow window. The 38°C outcome ultimately resolved correct, making this a case where the market underpriced certainty early and corrected late.

Total volume reached $60,282 against liquidity of $773,585. The liquidity figure dwarfs the volume, which suggests the order book was well-stocked for a clean resolution rather than a contested one. The final 24 hours contributed $33,948, or about 56% of all volume, confirming that conviction arrived with the forecasts rather than ahead of them.

• Resolution Outcome: 38°C confirmed by Saudi National Center of Meteorology on July 7, 2026.
• Article-Time Probability: 100% (fully resolved).
• Final Price at Close: 1.00 (100%).
• Total Volume: $60,282.
• Market Assessment: Underpriced YES early; correctly priced by close.

What Jeddah’s July 7 Reading Means for Temperature Tracking

A 38°C daily maximum in Jeddah during early July sits above the long-run calendar average but below the city’s all-time July highs, which have touched 45°C in exceptional heat dome events. The reading confirms that no anomalous inland heat advection occurred on July 7. The Arabian Peninsula’s coastal cities remain sensitive to sea breeze onset timing, which can suppress afternoon highs by 2°C to 4°C on any given day.

For prediction markets tracking granular temperature outcomes, this resolution demonstrates the value of a well-defined resolution source. Tying outcomes directly to official meteorological station data eliminates ambiguity. The binary structure worked cleanly here because the brackets were narrow enough to reflect real atmospheric variability, not just broad directional bets.

• The Saudi National Center of Meteorology’s official station data provided a clean, unambiguous resolution trigger with no interpretation margin.
• Jeddah’s July temperature distribution clusters between 34°C and 40°C, making each 1°C bracket a meaningful probability target for future markets.
• Sea breeze dynamics on July 7 held the peak below 39°C, consistent with moderate onshore flow that characterizes typical early-July patterns on the Red Sea coast.
• Future markets on Jeddah temperature outcomes may price late-window outcomes more efficiently now that traders have one more resolved data point in early July.

LINES RESOLUTION VERDICT

RESOLVED YES: 38°C CONFIRMED

The market correctly identified the 38°C outcome, though it took until the final 24 hours for traders to price that certainty fully.

What the market showed: The 38°C outcome opened at 66% implied probability and closed at 100%. Traders underpriced this outcome for most of the market’s life, then corrected sharply as real-time forecast data aligned with official meteorological readings on July 6 and 7.