Amsterdam July 2 High Temp: Will 21°C Win the Market?

Amsterdam’s weather on July 2 is sitting at the center of a tight prediction market, and the 21°C outcome has just moved to the front of the pack. The 8% surge in the last 24 hours tells a clear story: forecast models updated, and traders followed the data toward a cooler reading than earlier bets suggested. The 21°C contract now carries an implied probability of 51.5%, a razor-thin edge over the full field of alternatives.

The market question asks for the highest temperature recorded in Amsterdam on July 2, 2026. The YES contract on 21°C trades at $0.52, the NO side at $0.49, with resolution at noon Amsterdam time on July 2. Total volume stands at $23,996, with $17,095 of that changing hands in the last 24 hours alone.

How the Amsterdam Temperature Contract Works

This contract resolves YES if Amsterdam’s official daily maximum temperature on July 2 equals exactly 21°C. The resolution source is the market itself, drawing on official meteorological data for Amsterdam. Every other temperature outcome, from 16°C or below to 26°C or higher, resolves this contract NO.

• YES (21°C highest temperature on July 2): $0.52 per share, 51.5% implied probability.
• NO (any other temperature wins): $0.49 per share, 48.5% implied probability.

A NO outcome here covers a wide range of results. Amsterdam’s July average high runs near 22°C, so readings of 20°C, 22°C, or 23°C are all live competitors. KNMI, the Royal Netherlands Meteorological Institute, publishes the official temperature records. A shift in the afternoon forecast, a cloud cover change, or a front moving through the region faster than expected can push the day’s maximum one degree in either direction. That single-degree resolution structure is what makes this market so volatile.

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Momentum and Market Signals

The momentum composite here is unambiguous. The 21°C contract gained 8% in 24 hours and shows a trend score of 41.94, a moderate positive signal. The most likely driver is a forecast model update from KNMI or European numerical weather prediction systems pushing the July 2 high toward the lower end of the expected range. The prior 12% drop on June 30 suggests the market initially priced a warmer outcome before meteorological data revised the picture.

Total volume sits at $23,996 with $17,095 traded in the last 24 hours. Liquidity is $46,699. Here’s what the measurements are telling us: nearly all market activity is concentrated in the final 24 hours before resolution. That thin total volume means this price can move sharply on any new forecast update before tomorrow noon. A single weather model run showing 22°C instead of 21°C would reprice the NO side quickly.

• The 24h price change of +8.0% and trend score of 41.94 together point to a weather model shift favoring 21°C as the day’s peak.
• The 1h change of +0.0% shows the market has stabilized after absorbing the forecast update.
• Total volume of $23,996 is well below the $1M threshold, meaning this market is highly sensitive to any new trade or data release.
• Liquidity of $46,699 provides reasonable order-book depth relative to the total volume, but thin markets amplify every move.
• The June 30 decline and July 1 recovery pattern reflects traders tracking successive model runs from KNMI and the European Centre for Medium-Range Weather Forecasts.

Lines Analysis: Amsterdam on July Two

The data doesn’t care about the politics, and in this case the data points to a forecast consensus that has converged on 21°C. Amsterdam sits in a maritime climate with early-July temperatures typically ranging from 19°C to 24°C depending on Atlantic air mass positioning. A forecast maximum of 21°C is consistent with partly cloudy, slightly below-average conditions. The 8% move in the last 24 hours reflects traders accepting that current model output supports this outcome over the warmer alternatives that traded higher earlier in the week.

The NO side remains real for a straightforward reason. Temperature forecasts at 24-hour range carry uncertainty of plus or minus one to two degrees. The 22°C outcome is the most likely competitor, with 20°C close behind. KNMI’s morning forecast on July 2 itself will carry more precision than any model run available today. If an Atlantic system slows its eastward progress, Amsterdam’s afternoon temperature climbs toward 22°C or 23°C. If cloud cover arrives earlier than expected, the high stays at 20°C. Either scenario pays the NO side.

• KNMI morning forecast on July 2: any revision toward 22°C or higher would push the NO side sharply.
• European Centre for Medium-Range Weather Forecasts ensemble output: the spread of model runs quantifies the genuine uncertainty in the 21°C versus 22°C split.
• Atlantic front timing: a delayed front pushes Amsterdam warmer; an accelerated front keeps the high near 20°C to 21°C.
• Cloud cover and sunshine duration on July 2 morning: afternoon maximums track closely with morning solar input.
• On-the-ground temperature reports from Amsterdam Airport Schiphol, the standard measuring station, will determine final resolution.

The market is pricing uncertainty, not science, and with $23,996 in total volume this is a thin signal. The data currently favors 21°C, but a one-degree outcome in a maritime climate with a 24-hour horizon is genuinely uncertain. Neither side of this contract reflects settled science. What KNMI and Schiphol report at noon on July 2 is all that matters.

LINES VERDICT

NARROW EDGE FOR TWENTY-ONE DEGREES

The forecast models updated in the last 24 hours and traders followed, pushing 21°C to a slim majority. The margin is thin enough that any new model run before resolution could reverse it.

What the market says: The 21°C outcome carries a 51.5% implied probability, meaning the market treats this as essentially a coin flip with a slight lean toward a below-average July day in Amsterdam. With resolution at noon on July 2, volatility is high and will remain so until KNMI’s final morning forecast.

Key unknown: The KNMI morning forecast on July 2 and the actual Schiphol temperature reading through noon are the only data points that matter now. Any revision toward 22°C or a faster-moving Atlantic system would immediately reprice the NO side above the YES.