Paris June 29 Low Temp: Will It Hit Seventeen Degrees?

Paris weather markets are rarely this contested. The contract asking whether the lowest temperature in Paris on June 29 will land exactly at 17°C is trading at 36.5% probability right now, meaning traders are leaning against this outcome by a meaningful margin. The momentum signal is mixed: flat over the last hour, down 4% over the last 24 hours, with a trend score sitting at 53.64, just above neutral. That combination points to a market that ran hot earlier in the week and is now cooling off as the resolution window closes.

The market question is specific: does the overnight low in Paris on June 29 resolve at exactly 17°C? The yes contract trades at $0.37, the no contract at $0.64, and the market closes at noon on June 29. Total volume has reached $11,185, with $9,713 of that moving in the last 24 hours. Liquidity stands at $18,343. This is a thin, fast-moving contract, and price can shift sharply on a single updated forecast.

How the Seventeen-Degree Contract Works

This is a discrete temperature bin market. Resolution hinges on whether the official lowest temperature recorded in Paris on June 29 falls exactly at 17°C, not above it, not below it. The market resolves against the official temperature measurement for Paris on that date. Competing bins include 16°C, 15°C, 14°C or below on the low end, and 18°C through 24°C or higher on the upper end.

• YES ($0.37, 36.5% probability): The Paris overnight low on June 29 records exactly 17°C.
• NO ($0.64, 63.5% probability): The Paris overnight low on June 29 resolves at any other temperature bin, above or below 17°C.

The no side pays out across ten alternative bins. A low of 18°C or warmer, or 16°C or cooler, all count as no. The bar for no is structurally wide. For yes to fail, the temperature only needs to miss 17°C by one degree in either direction. Late June in Paris historically produces overnight lows ranging from around 13°C to 21°C, so the spread of realistic outcomes is real, and the 17°C bin is just one of many live possibilities.

Sponsored Partner

Momentum and Market Signals

The momentum composite here tells a specific story. The 24-hour drop of 4% on the yes price, combined with a trend score just above the midpoint, suggests early buyers pushed this contract higher and are now pulling back as updated forecasts come in. The most likely driver is intraday weather model updates, which shift probability mass between adjacent temperature bins as the resolution date approaches.

Total volume of $11,185 with $9,713 arriving in the last 24 hours signals genuine trader interest, but this is still a sub-$15,000 market. Liquidity at $18,343 exceeds volume, which is unusual and reflects market makers holding positions across multiple bins. Price can move sharply here on a single forecast update or a shift in model consensus. The volume level puts this at medium confidence for market signals.

• The 24-hour price decline of 4% on yes reflects traders moving probability mass away from 17°C toward adjacent bins, most likely 16°C or 18°C.
• The 1-hour flat reading suggests the current forecast consensus has stabilized, at least temporarily, around the 36.5% yes level.
• The trend score of 53.64 sits just above neutral, consistent with a market that has moved but not committed to a strong directional push.
• Liquidity exceeding volume means market makers are active across bins, and a single large trade could reprice yes meaningfully before resolution.
• With resolution at noon June 29 and the overnight low typically occurring between 3am and 6am Paris time, the measurement window is less than 24 hours away.

Lines Analysis: What the Data Supports

The 36.5% yes price reflects the inherent difficulty of landing on a single 1-degree bin in a multi-outcome temperature market. Late June Paris overnight lows cluster in the 15°C to 20°C range based on historical seasonal patterns. The 17°C bin is plausible, but so are the bins on either side. Weather forecast models for June 29 Paris will have their tightest resolution by tonight, and any model shift toward 16°C or 18°C will push yes lower.

What makes the no side compelling is the structural math. Ten bins compete against this one. Even if forecasters are centering around 17°C, probability mass spreads across adjacent outcomes. A front passage, a cloudier night than expected, or a warmer-than-forecast evening could easily shift the actual low by one or two degrees. The measurement itself, the official Paris overnight low, will be precise. The market is pricing the uncertainty around which bin captures it.

• European weather model updates in the next 12 hours are the single clearest signal to watch. A model shift toward 18°C or 16°C would reprice yes lower immediately.
• Surface dew point and cloud cover forecasts for the Paris basin on the evening of June 28 will anchor the overnight low trajectory.
• Any significant thunderstorm or frontal passage over the Ile-de-France region tonight would cool the overnight low and shift probability toward the 15°C or 16°C bins.
• A calm, clear night with light southerly flow would keep the low warmer, pushing probability toward 18°C or 19°C and away from yes.

Total volume of $11,185 with 24-hour concentration suggests this market has been actively traded as forecasts updated. The data currently favors no, structurally and by momentum. The market is pricing uncertainty about which bin captures the actual low, not certainty that 17°C is wrong.

Leaning No, One Degree Either Way Is Enough

The structural math of a ten-bin market works against any single outcome, and the 24-hour momentum on yes is declining as the resolution window narrows.

What the market says: 36.5% probability for yes reflects genuine meteorological uncertainty about which 1-degree bin the Paris overnight low lands in on June 29. With resolution at noon on June 29, this contract has hours, not days, before the measurement locks in. Price can move sharply on any forecast update between now and 6am Paris time.

Key unknown: The single most important variable is the final European weather model run tonight, which will set the forecast consensus for the Paris overnight low on June 29 within a tight range. A one-degree shift in model output in either direction would meaningfully reprice this contract before resolution.