Chicago July 6 High Temp: Can 78-79°F Hold?

Chicago’s weather on July 6 has traders splitting hairs over two-degree bands. The 78-79°F outcome leads the market at 35.5% implied probability, but that number reflects genuine uncertainty across a tight temperature window. With ten outcome bands in play, no single bracket commands conviction. Here’s what the measurements are telling us: the spread is thin, the stakes are small, and the next forecast update matters more than anything else in this market.

The market asks a direct question: what will Chicago’s highest temperature be on July 6, 2026? The 78-79°F band trades at $0.36 YES and $0.65 NO. The market closes at 12:00 UTC on July 6. Total volume stands at $4,349, all of it placed in the last 24 hours. Liquidity sits at $37,405, which is deep relative to the volume traded so far.

How the 78-79°F Contract Works

YES pays if Chicago’s official high temperature on July 6 lands between 78°F and 79°F inclusive. NO pays if the high falls anywhere outside that two-degree band. Resolution will follow the market’s designated weather data source for Chicago’s daily maximum temperature.

• YES ($0.36): Chicago’s July 6 high lands at exactly 78°F or 79°F.
• NO ($0.65): Chicago’s July 6 high falls outside the 78-79°F band, in any direction.

The NO side is structurally favored here, but not because the weather will necessarily be extreme. It wins whenever the high drifts into any of the nine other bands. Adjacent outcomes like 80-81°F and 76-77°F each pull probability away from 78-79°F. A forecast shift of two or three degrees in either direction is enough to pay out NO.

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Momentum and Market Signals

The trend score of 40.47 combined with flat movement in the last hour and a significant drop from the opening price signals a market that has repriced sharply and then stabilized. The 14% decline from the opening price on July 4 reflects traders absorbing updated forecast data and redistributing probability across adjacent temperature bands. The current price appears to reflect the latest available NWS forecast for Chicago on July 6.

Total volume of $4,349 is thin. All of it arrived in the last 24 hours, which means this market opened, repriced on new forecast data, and has since gone quiet. Liquidity of $37,405 is unusually deep for this volume level, meaning a single large trade could move the price meaningfully before resolution. The data doesn’t care about the politics, but in a market this thin, a single well-informed trader with a fresh forecast printout can shift the odds.

• The 1-hour price change of 0.0% shows the market has found a temporary equilibrium after the July 4 repricing.
• The 24h decline from $0.50 to $0.36 is the dominant signal: traders moved probability out of 78-79°F and into adjacent bands as forecasts updated.
• Trend score of 40.47 sits below the midpoint, consistent with bearish momentum for this specific outcome.
• Liquidity depth ($37,405) relative to volume ($4,349) means the order book can absorb significant new bets without extreme price swings.
• Open interest of $0 indicates no unresolved positions carrying overnight, which is unusual and worth monitoring as the resolution window approaches.

Lines Analysis: What Moves This Market Before July 6

The National Weather Service Chicago forecast is the single most important input for this contract. July high temperatures in Chicago during early July typically cluster between the mid-70s and mid-80s, depending on whether a cold front or high-pressure dome dominates. The 78-79°F band sits in a reasonable central range for an early July day without extreme heat or a strong front pushing temperatures below average. If the NWS forecast for July 6 shows a daytime high in that exact range, the YES price should recover toward the mid-40s. The current 35.5% reflects trader skepticism that the high will land precisely in this two-degree window rather than in adjacent bands.

The adjacent bands present the clearest threat to 78-79°F. A forecast nudge to 80-81°F or 76-77°F would be enough to push NO further into the lead. Any frontal passage cooling Chicago to the mid-70s or a strengthening ridge pushing temperatures into the low 80s both pay NO. The 78-79°F band requires precise forecast alignment, not extreme weather.

• Any NWS Chicago forecast update showing July 6 highs above 80°F or below 77°F would push the YES price lower.
• A forecast holding steady in the 78-80°F range would support modest YES price recovery toward 40-45%.
• Overnight July 5 into July 6 conditions (dew point, cloud cover, wind direction) will shape the actual high and may not be priced until the morning hours.
• Market resolution at 12:00 UTC on July 6 means final pricing will compress into a short window once early temperature readings arrive.

Total volume of $4,349 is not enough to treat trader positioning as a strong signal. The thin book means this market is expressing forecast-based probability more than crowd wisdom. The data currently favors NO across the full range of alternatives, but 78-79°F remains the single highest-probability individual band. That distinction matters: NO wins if the weather does almost anything, while YES requires a narrow meteorological outcome.

LINES VERDICT

NARROW BAND, THIN MARKET

The 78-79°F band leads all individual outcomes but faces long odds because nine competing bands collectively hold the remaining probability. This market is pricing uncertainty across a tight forecast range, not a directional weather call.

What the market says: At 35.5% implied probability, the market treats 78-79°F as the most likely single outcome but still a coin-flip-minus bet. Volume is too thin to assign high confidence to this price. Any forecast update before resolution could reprice the contract sharply given the $37,405 in available liquidity.

Key unknown: The NWS Chicago forecast for July 6 in the 24 hours before resolution is the single data point that will move this contract. A two-degree shift in the predicted high is enough to change the outcome entirely.