Miami July 3 Low Temp: Will 78-79°F Hit?

Miami sits in the peak of its hottest season, and a single overnight temperature band is drawing traders into a market with a tight window and a narrow resolution date. The 78-79°F outcome for the lowest temperature on July 3 carries a 42.5% implied probability. That number reflects genuine uncertainty across several adjacent bands, not a settled call.

The market question asks: what will be the lowest temperature recorded in Miami on July 3, 2026? The primary outcome (78-79°F) is priced at $0.43 YES and $0.58 NO. The market resolves at noon on July 3. Total volume is $6,099 with $7,961 in liquidity, making this an extremely thin market by any standard. New data can move the price sharply.

How the Miami Low Temperature Contract Works

This is a categorical market. Traders bet on which temperature band contains the official lowest reading in Miami on July 3. The YES outcome pays if the overnight or early-morning low falls between 78°F and 79°F. The NO outcome pays if the low lands in any other band, including 76-77°F, 80-81°F, or any other listed range. The resolution source is the market operator’s designated weather data feed.

• YES (78-79°F) at $0.43: pays if the official Miami low on July 3 lands in this two-degree band (implied probability: 42.5%).
• NO at $0.58: pays if the low falls outside 78-79°F, anywhere from 69°F or below to 88°F or higher.

The NO contract wins whenever Miami’s low misses this specific band entirely. Given that Miami’s July climatological lows average near 79°F, the 80-81°F and 76-77°F bands each represent meaningful competing outcomes. The NO side carries a structural edge here: it only needs the temperature to land anywhere outside a two-degree window.

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Momentum and Market Signals

The one-hour price change is flat at 0.0%, and the trend score of 54.21 sits near neutral. The most likely driver of any price movement before resolution is updated NWS Miami forecast data showing the overnight low trending above or below this band. A forecast shift toward 80°F or higher would push YES lower and strengthen NO further.

Total volume is $6,099, all of it placed within the last 24 hours. Liquidity sits at $7,961. This is well below the $1 million threshold for reliable price signals. A single large bet of even a few hundred dollars can move this market materially. Treat current pricing as indicative, not authoritative.

• Price action: The 78-79°F band dropped roughly 6% on July 2, meaning traders shifted away from this outcome as the forecast came into sharper focus.
• 24h price change: The decline reflects growing trader conviction that the low may land in an adjacent warmer band, consistent with anomalously warm Atlantic sea surface temperatures in summer 2026.
• Trend score at 54.21: Barely above neutral, confirming no strong directional conviction yet.
• Liquidity warning: At under $10,000 total volume, this market is thin enough that weather forecast updates in the next 12-18 hours could produce an outsized price swing.
• Adjacent outcomes: The 80-81°F band is the primary competitor. Miami’s sea surface temperatures have run above average this season, which nudges overnight lows upward.

Lines Analysis: Miami Temperature on July Three

The data doesn’t care about the politics, and here the data is pretty straightforward. Miami in early July has a climatological overnight low of approximately 78-80°F. The 78-79°F band captures the historical center of that distribution, which explains why it attracts the most YES interest. But the band is only two degrees wide, and the market is pricing real probability on both sides of it.

What makes NO real is simple arithmetic. There are ten competing outcome bands in this market. The 80-81°F and 76-77°F bands are the closest competitors. Given that Atlantic sea surface temperatures have remained above the long-term average through mid-2026, Miami’s overnight lows have been running slightly warmer than the historical median. A low landing in the 80-81°F range would be entirely consistent with this summer’s pattern. The NO contract doesn’t need a cold snap or a heat record. It just needs the temperature to drift one degree in either direction.

• NWS Miami forecast updates in the 12 hours before resolution carry the most weight. Any shift showing a predicted low above 80°F or below 78°F reprices YES materially.
• Atlantic sea surface temperature anomalies favor warmer overnight lows, which nudges probability toward the 80-81°F band over 78-79°F.
• Market liquidity is thin enough that a single forecast change, not necessarily a large trade, will move the price sharply.
• Cloud cover and overnight wind patterns on July 2-3 are the physical mechanisms that determine the actual low. Increased cloud cover tends to keep lows warmer; clear skies can push them slightly lower.
• The resolution window closes at noon on July 3, meaning the overnight low will be final data well before cutoff.

Here’s what the measurements are telling us: the 78-79°F band is the single most likely outcome in this market, but likely only carries 30-45% of the actual probability distribution when you account for all adjacent bands. Total volume of $6,099 provides a weak signal at best. The data slightly favors warmer outcomes given current sea surface temperature conditions, but the margin is narrow enough that the NWS forecast update is the decisive catalyst.

LINES VERDICT

Competitive Categorical Market With Thin Signal

The 78-79°F band is the modal outcome for Miami’s July 3 overnight low, but the two-degree window is narrow enough that adjacent warmer bands remain genuine competitors given this summer’s above-average Atlantic temperatures.

What the market says: 42.5% probability for 78-79°F, reflecting a market that sees this as the single most likely band but assigns more than half the probability to other outcomes. Volatility is high given the thin volume and the 24-hour resolution window.

Key unknown: The NWS Miami forecast update for overnight July 2-3 is the single most important data point. A predicted low at 80°F or above shifts probability toward warmer bands and pushes the YES price lower from its current 42.5% level.