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Will the temperature in San Jose (SJC Airport) drop below 40F in December 2026 on Polymarket US

Will the temperature recorded at San Jose (SJC Airport) in San Jose, California be strictly less than 40 degrees Fahrenheit on any day in December 2026 as reported by the National Weather Service's Climatological Report (Daily)? Outcome verified from NWS Climatological Report.

Market says (typical open contract)
99%
Median YES price across 1 open contract, 10 Nov 2026 04:28 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
2% 😈
All but decided, says the market. The remaining cents are the price of the rare surprise, and the fee comes off them first.

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%
90¢0.9¢$0.4790.9%
99¢ (now)0.1¢$0.0599.1%

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
Will the temperature in San Jose (SJC Airport) drop below 40F in December 2026?99¢99%0.1¢—2%0Jan 15, 04:00 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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