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Lowest temperature in Chicago on November 10 on Polymarket US

Will the lowest temperature recorded at Chicago Midway Airport (KMDW) in Chicago for 2026-11-10 as reported by the National Weather Service's Climatological Report (Daily) be less than or equal to 39F? Outcome verified from NWS Climatological Report.

Market says (typical open contract)
85%
Median YES price across 2 open contracts, 10 Nov 2026 09:57 UTC.
Real-world odds
—
No independent base rate yet. Until we connect one (sportsbook consensus, forecasts, the score), the market's own price is the best public forecast, and the fee sits on top of it.
Luck needed meter
30% 😈
Mostly decided, says the market. You are paying a fee to collect a few cents the market already agrees on.

The cover charge

Fee and break-even by purchase price
If you buy atFee per contractOn $50Win rate to break even
30¢2.0¢$3.3232.0%
50¢2.4¢$2.3852.4%
70¢2.0¢$1.4372.0%
85¢ (now)1.2¢$0.7186.2%
90¢0.9¢$0.4790.9%

Resting (maker) orders pay nothing; orders that take liquidity pay the fee. Formula: 9.5% × price × (1 − price) per share on orders that take liquidity (accounts under $10,000 of 30-day volume; 6.95% in a new account's first week and above $250,000). Break-even assumes you hold to settlement; trading out early pays the fee twice.

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Open contracts right now

Open contracts in this series with price, implied probability, volume and close time
ContractYES priceImpliedFee at this priceReal-world oddsLuck neededVolumeCloses
Lowest temperature in Chicago on November 10?85¢85%1.2¢—30%0Nov 11, 11:00 UTC
Lowest temperature in Chicago on November 10?1¢1%0.1¢—2%0Nov 11, 11:00 UTC

Who actually wins this market

  • Whoever posts the resting orders and collects the spread without paying a fee.
  • The venue, on every fee.
  • Not, on average, the person clicking buy because the chart is going their way. That was us.

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