Miami Low Temp July 1: Will 78-79°F Hit?

Miami’s overnight low temperature for July 1 has a clear front-runner, but the market is not convinced. The 78-79°F band sits at 37.5% implied probability, meaning nearly two-thirds of market participants expect the mercury to land somewhere else. With less than 24 hours until resolution, the data and the traders are having an argument.

The market question is simple: what is Miami’s lowest recorded temperature on July 1, 2026? The 78-79°F range trades at $0.38 per share against $0.63 for NO. Total volume stands at $8,509, all of it placed in the last 24 hours. Resolution is set for July 1 at 12:00 PM Eastern.

How the Contract Works: Miami Low Temperature Bands

This market resolves based on Miami’s official lowest temperature reading on July 1, 2026. A YES outcome requires the recorded low to fall within the 78-79°F range exactly. Any reading above or below that two-degree window sends the contract to zero. The resolution source is the market operator’s designated weather data provider.

• YES ($0.38, 37.5% probability): Miami’s July 1 low falls between 78°F and 79°F inclusive.
• NO ($0.63, 62.5% probability): Miami’s July 1 low lands in any other temperature band, from 69°F or below up to 88°F or higher.

The NO contract wins if Miami’s low temperature falls anywhere outside that narrow window. The competing bands with the strongest implied interest include 80-81°F and 76-77°F, which bracket the primary outcome on both sides. A warmer-than-typical surface pattern pushes the low toward 80°F or above. A stronger overnight sea breeze or a weak front pushing south could drop readings toward 76-77°F. Either scenario zeroes out the 78-79°F contract.

Momentum and Market Signals

Sponsored Partner

The momentum composite here is negative and sharp. The 78-79°F contract dropped 12% in the last hour on June 30, reversing a 12% gain from June 29. That whipsaw pattern, combined with a trend score of 63.41, signals active repositioning as traders incorporate the most current forecast models. The most likely driver is updated National Weather Service guidance or private weather model output published overnight.

Total volume is $8,509, with all of it arriving in the last 24 hours. Liquidity sits at $19,434, which is thin but not negligible for a single-day weather market. Thin liquidity means a few large trades can move the price sharply in either direction before resolution. A late forecast update or an unexpected shift in the synoptic pattern could reprice the contract significantly in the hours remaining.

• The 1-hour price drop of 12% on June 30 signals traders are fading the 78-79°F band based on fresh forecast data.
• All $8,509 in volume arrived in the last 24 hours, confirming this market only became active as the resolution date approached.
• The $19,434 liquidity pool is adequate for a short-duration weather market but thin enough that a single large order could shift the implied probability by several points.
• The trend score of 63.41 shows moderate directional conviction, not a panicked flush in either direction.
• Miami’s July climatology places average overnight lows near 76-78°F, making the 78-79°F band historically reasonable but not dominant.

Lines Analysis: Miami’s July Overnight Low

Miami’s July overnight lows cluster in a relatively narrow range historically. The 78-79°F band is plausible, sitting just above the long-run average for early July. National Weather Service forecasts for South Florida in late June and early July 2026 have reflected above-normal sea surface temperatures in the Florida Straits, which tend to keep overnight lows elevated. That would push the distribution toward 80-81°F rather than 78-79°F, which partly explains the bearish price action on June 30.

The path for 78-79°F to pay out requires a moderate overnight low, neither too warm nor too cool. A stronger-than-forecast sea breeze or a brief boundary layer interaction could bring temps down toward the lower edge of this band. But the 12% drop in the last hour suggests current forecast models are not favoring this outcome. The 80-81°F band likely absorbed some of that capital flight.

• National Weather Service South Florida guidance: any forecast showing overnight lows above 80°F would pressure the 78-79°F contract further toward zero.
• Private weather model consensus (Weather.com, Weather Underground): if ensemble models tighten around 80°F, the NO contract strengthens.
• Surface dewpoint and sea surface temperature data: elevated SSTs in the Florida Straits raise the floor on overnight lows.
• Any late-breaking mesoscale convective activity: overnight storms can briefly lower temperatures, pulling readings toward 76-77°F.
• Official ASOS station reading at Miami International Airport: that is the station most commonly used for official low temperature records.

The total volume of $8,509 is modest but concentrated in the final 24 hours, which tells us this market attracted attention only as the resolution window tightened. The data currently favor outcomes above 78-79°F, based on the momentum reversal. The case for the 78-79°F band rests on a moderate overnight pattern that current models appear to be marking as less likely.

LINES VERDICT

NARROW BAND, BROAD UNCERTAINTY

The 78-79°F contract is mathematically reasonable but facing headwinds from the most recent forecast data, which appears to favor a warmer overnight low for Miami on July 1.

What the market says: At 37.5% implied probability, the market is pricing this outcome as possible but not likely. With less than 24 hours to resolution, thin liquidity means any updated forecast could move this price sharply in either direction.

Key unknown: The National Weather Service’s final overnight low forecast for Miami on June 30 into July 1 is the single data point most likely to reprice this contract before resolution.