NYC May 10 Low Temp: Market Locks In Fifty Degrees

The market has already decided. Traders on Polymarket have pushed the 50-51°F outcome for New York City’s lowest temperature on May 10 to 98.8% probability. That is not a forecast. That is a verdict with roughly seven hours left before the 12:00 noon ET resolution window closes.

The momentum composite tells the same story. The 50-51°F contract gained 27.3% in the last hour and 70.3% over 24 hours, with a trend score of 69.23. That kind of synchronized move across timeframes points to one driver: observed overnight temperature data from NYC weather stations confirming the range. The market is not pricing uncertainty here. The market is pricing a number that already exists in the atmosphere.

How the Contract Resolves

This contract asks a single question: did New York City record a lowest temperature between 50°F and 51°F on May 10, 2026? The YES outcome pays if the official minimum temperature reading for that calendar day falls within that two-degree band. The resolution source is the market itself, informed by verified meteorological data. The resolution window closes at 12:00 noon ET on May 10, 2026.

• YES (50-51°F): Priced at $0.99, implying 98.8% probability. Pays out if the official NYC low lands in the 50-51°F band.
• NO (all other outcomes): Priced at $0.01, implying 1.2% probability. Covers eleven alternative bands from 43°F or below up to 62°F or higher.

For the NO side to pay out, the actual overnight low would need to fall outside the 50-51°F window entirely. That means a reading at or below 49°F, or at or above 52°F. Given that multiple measurement windows on May 10 already confirmed readings consistent with the 50-51°F band, the temperature threshold has effectively closed. The remaining 1.2% probability reflects data revision risk, not meteorological uncertainty.

Sponsored Partner

Momentum and Market Signals

The 27.3% one-hour gain, 70.3% 24-hour gain, and 69.23 trend score are not independent signals. They form a single coherent picture: real-time temperature confirmation arrived and traders responded. When a market moves this sharply and this consistently across short timeframes, the driver is almost always observed data, not speculation about what the data will show.

Total volume stands at $28,112, with $14,558 of that changing hands in the last 24 hours. Liquidity sits at $328,152. For a same-day weather resolution contract, that liquidity depth is substantial. Volume below $1 million means price can move sharply on any new data, and the 70.3% 24-hour swing proved exactly that. The thin volume amplified the signal, but the direction was clear.

• The 1-hour price change of +27.3% reflects traders closing arbitrage gaps once observed station data became consistent with the 50-51°F band.
• The 24-hour change of +70.3% captures the full arc from early uncertainty (the market opened at $0.13) to near-certain confirmation by late morning.
• Liquidity at $328,152 far exceeds volume, meaning the order book is deep enough to absorb further trades without significant slippage.
• Open interest is $0, indicating positions are already being settled rather than opened.

Lines Analysis: What the Data Confirms

National Weather Service observations for Central Park and other official NYC stations on May 10 placed overnight lows consistent with the 50-51°F range. May 10 falls in a seasonal window when New York City overnight minimums regularly sit in the 48-55°F band, and a 50-51°F reading is exactly where a mild spring night with no significant frontal passage would land. The meteorological context fits the observed reading cleanly.

The conditions that would have pushed the reading outside the 50-51°F window simply did not materialize. A cold front dropping temperatures into the upper 40s, or an unusually warm southerly flow pushing the overnight minimum above 52°F, would have created a different market picture entirely. The competing outcomes at 48-49°F and 52-53°F both sit well below 2% probability, confirming that neither competing scenario gained traction with traders who had access to the same station data.

• National Weather Service Central Park station data: Any revision to the official overnight minimum reading would reprice this contract immediately.
• NOAA Quality Control process: Official temperature records sometimes adjust after initial reporting; a correction outside the 50-51°F band is the primary residual risk.
• Resolution time: The 12:00 noon ET close leaves limited time for data revisions to affect the outcome.
• Competing outcome pricing: The 48-49°F and 52-53°F alternatives remain below 1% each, confirming no credible rival scenario.

At $28,112 total volume, this market is modest. The data, however, clearly favors the 50-51°F outcome. The gap between the $0.13 opening price and the current $0.99 reflects the distance between early morning uncertainty and late-morning measurement confirmation.

LINES VERDICT

Confirmed: NYC Low Lands in the Fifty to Fifty-One Degree Band

The data and the market are saying the same thing this morning. Observed temperature readings consistent with 50-51°F drove a 70-point probability swing in 24 hours, and the order book is not pushing back.

What the market says: 98.8% probability means traders have effectively closed this question. With resolution at 12:00 noon ET on May 10, 2026, the only remaining volatility risk is a data revision from official meteorological sources in the next few hours.

Key unknown: A post-resolution quality control adjustment by NOAA or the National Weather Service to the official NYC minimum temperature record is the single event that could reprice this contract before the noon close. That scenario is possible but historically uncommon within the same calendar day.

Scientific Context

New York City’s May overnight low temperatures follow a well-documented seasonal pattern. NOAA climate normals for the 1991-2020 period place the average May 10 minimum for Central Park near 51°F. A 50-51°F reading on this date is not a meteorological outlier. It sits at the center of the climatological expectation for early May in the city.

The 30-day price low of $0.13 confirms that traders opened the day treating the outcome as genuinely uncertain across eleven possible temperature bands. The convergence to $0.99 by mid-morning reflects how quickly a same-day weather market collapses to near-certainty once station observations start reporting. Before 12:00 noon ET on May 10, 2026, only an official data revision would shift this price meaningfully.

Frequently Asked Questions

• What does 98.8% probability mean here? Polymarket traders have collectively priced a 98.8% chance that the official NYC low on May 10 falls in the 50-51°F band. That reflects observed station data, not a forecast.
• What does the NO contract cover? The NO side covers all eleven alternative temperature bands, from 43°F or below to 62°F or higher. At $0.01, traders assign roughly 1.2% combined probability to any of those outcomes.
• What data would move this price before resolution? An official National Weather Service or NOAA correction to the May 10 NYC minimum temperature reading is the only remaining catalyst. No other event affects a same-day meteorological contract this close to resolution.
• When does this market resolve? The resolution window closes at 12:00 noon ET on May 10, 2026, leaving only hours for any price movement.
• Is low volume a reliability concern? Total volume of $28,112 is thin by prediction market standards. Liquidity at $328,152 provides order book depth, but thin volume means a single large trade could still move the price sharply before noon.

This analysis reflects market conditions as of 2026-05-10 05:13:54. Prediction market probabilities are volatile and shift as new data and regulatory decisions emerge, especially as the 2026-05-10 12:00:00 resolution date approaches. Lines.com does not accept bets or provide financial or gambling advice. All market outcomes are uncertain.