NYC Lowest Temp May 3: Will It Hit Forty-Six to Forty-Seven?

New York City’s overnight low temperature for May 3 has become a surprisingly active prediction market. The 46-47°F band holds a 59% implied probability heading into tomorrow. That’s a meaningful lean, but in a market chopped across eleven possible outcome bands, 59% is not a lock. It’s a best guess with real competition on either side.

What makes this interesting is the velocity of the move. The composite momentum signal combining the one-hour gain, the 24-hour gain, and the trend score reads as one of the sharpest short-term conviction bursts on the board right now. That kind of acceleration in a weather market usually means traders are responding to an updated model run or a tightening forecast consensus. Something shifted in the past 24 hours, and the market repriced around it fast.

How the Contract Resolves: The 46-47°F Band

This contract resolves based on the official lowest temperature recorded in New York City on May 3, 2026, with a resolution cutoff at 12:00 UTC. The winning outcome is whichever temperature band contains the actual observed low. Eleven bands are on the board, ranging from 35°F or below up to 54°F or higher. Right now, 46-47°F is the market favorite at 59%.

• 46-47°F (YES): 0.59 implied probability, 59% chance the overnight low lands in this two-degree window.
• 44-45°F: The next most plausible alternative, capturing a scenario where temperatures run slightly cooler than models currently suggest.
• 48-49°F: Covers a warmer miss, relevant if a low-pressure system stalls or winds stay southerly longer than forecast.
• 42-43°F and below: Lower-probability outcomes tied to a sharper cold intrusion than current guidance shows.

The 44-45°F band is the primary competing outcome. Weather model ensembles frequently spread across a four-degree range for overnight lows 24 hours out. If the actual low undershoots the 46-47°F window by just two degrees, the market favorite pays nothing and 44-45°F captures the winning position instead. That adjacency risk is the core tension in this contract.

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Momentum and Market Signals: A Thin Book Moving Fast

The composite momentum signal here is striking. The one-hour change, 24-hour change, and trend score are all running in the same direction at the same time, which typically means a single catalyst drove the repricing. The most likely driver is a tightening NWS or NOAA short-range forecast that moved the Central Park station temperature guidance toward the 46-47°F range.

Total volume sits at $2,234, with $1,679 of that trading in the last 24 hours. Liquidity stands at $9,693. Here’s what the measurements are telling us: this is a thin book. Volume well below $1 million means a single meaningful trade can move the price sharply. The 59% figure reflects current trader consensus, but it is not anchored by deep capital. New forecast data published before the 12:00 UTC resolution could push this price hard in either direction within minutes.

• 1-hour price change at +21.0%, 24-hour at +31.0%, trend score at 83.13: All three align as a single bullish signal, suggesting a forecast update drove rapid repricing toward the 46-47°F band.
• Total volume of $2,234: Thin liquidity flag. Price is more sensitive to individual trades than in high-volume markets.
• $9,693 in liquidity: Order book depth is modest. A bet of a few hundred dollars could move the market price by several percentage points.
• Adjacent bands at 44-45°F and 48-49°F: Both remain live alternatives. A two-degree forecast miss in either direction reprices the entire market instantly.
• Resolution at 2026-05-03 12:00:00 UTC: Less than 27 hours remain. Model convergence or a late-breaking front passage would be the last repricing catalyst.

Lines Analysis: NOAA Guidance vs. Adjacent Band Risk

The case for 46-47°F rests on current National Weather Service short-range guidance for the New York City metro area. Early May overnight lows in the mid-to-upper 40s are climatologically consistent for Central Park. The sharp momentum move in the past 24 hours suggests at least some traders have seen updated model output pointing toward this range. When the one-hour and 24-hour signals align at this magnitude, the market is usually chasing a real signal, not noise.

The data doesn’t care about the politics, and here the data offers a genuine counterargument. Weather market resolution is unforgiving at two-degree band widths. The 44-45°F band sits directly adjacent. A cold front timing shift of four to six hours, or a dry airmass moving through slightly faster than modeled, drops the overnight low by two degrees and the current favorite pays nothing. The 48-49°F band carries the same logic on the warm side. Neither alternative requires a dramatic forecast bust. Either requires only a modest miss.

Signals to monitor before 12:00 UTC on May 3:

• NWS New York overnight low forecast updates published in the final 12 hours before resolution carry the most weight in repricing this contract.
• NOAA Global Ensemble Forecast System spread: if the ensemble narrows further around 46-47°F, expect the YES price to push toward 65-70%.
• Wind direction at Central Park: a sustained southerly wind overnight keeps the low elevated; a northwest shift accelerates the cool-down and favors the 44-45°F band.
• Any mesoscale convective activity or frontal passage timing shift reported by NWS after 20:00 UTC May 2 is the highest-impact late-breaking variable.
• The 44-45°F band price movement is the clearest real-time signal of where competing traders think the forecast is heading.

The market at $2,234 total volume is pricing uncertainty, not science. The 59% lean toward 46-47°F is directionally supported by current forecast guidance, but the thin book means this number is fragile. The data favors the current leader. The band width does not.

LINES VERDICT

Narrow Lead, Fragile Price

The 46-47°F band holds a defensible lead backed by current NWS guidance and sharp recent momentum, but thin liquidity and adjacent competing bands make this probability more volatile than the number suggests.

What the market says: At 59%, the market tilts toward 46-47°F but is not expressing high conviction. With less than 27 hours to the 2026-05-03 12:00:00 resolution, any updated model run or late frontal timing shift can reprice this contract sharply in either direction.

Key unknown: The single most important variable is the final NWS short-range forecast update for Central Park issued in the 12 hours before resolution. That update will determine whether the 44-45°F or 48-49°F band gains at the current leader’s expense.

Scientific Context: Early May Temperature Climatology in New York City

Central Park’s May 3 overnight low climatology clusters between 44°F and 52°F based on NOAA historical normals. The 46-47°F band sits squarely inside that range, which is one reason it commands the highest single-band probability. The 30-day price history for this contract shows wild swings reflecting model uncertainty early in the forecast window. The market is now converging as the event approaches, which is the expected pattern for a weather market in its final 24 hours. If NWS guidance holds steady overnight, the 59% probability should firm. If a late model shift occurs, expect the biggest repricing to benefit whichever adjacent band aligns with the new guidance.

Frequently Asked Questions

• What does 59% mean here? It means traders collectively assign a 59% chance that the official NYC overnight low on May 3 falls between 46°F and 47°F. The remaining 41% is distributed across ten other temperature bands.
• What pays out if the low misses by two degrees? Nothing for the 46-47°F contract. If the actual low lands at 44°F or 45°F, that band wins instead. Temperature band markets are winner-take-all by range.
• What moves the price before resolution? NWS and NOAA short-range forecast updates. Any shift in the Central Park overnight low guidance of two degrees or more in either direction would immediately reprice all competing bands.
• When does this contract resolve? At 2026-05-03 12:00:00 UTC. The resolution source is official market determination based on observed temperature data for New York City on May 3.
• Is the $9,693 liquidity figure reliable? It reflects current order book depth, but with total volume at only $2,234, this is a thin market. Individual trades of a few hundred dollars can move the displayed probability by several percentage points.

This analysis reflects market conditions as of 2026-05-02 09:12:10. Prediction market probabilities are volatile and shift as new data and regulatory decisions emerge, especially as the 2026-05-03 12:00:00 resolution date approaches. Lines.com does not accept bets or provide financial or gambling advice. All market outcomes are uncertain.