TOTAL VOLUME:
$134.1b
24H VOL:
$133,388,117
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,436,095,462
405,232
Markets across
30,526
events
MATCHED EVENTS:
2,693
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 9, 4:00 AM EST
Kalshi
This market tracks the overnight low temperature in San Francisco on July 8, 2026, as recorded by the National Weather Service at San Francisco Airport. The outcome will be determined by the official NWS Climatological Report (Daily), which may differ from other weather sources due to measurement methods and rounding conventions.
Resolution is based on the minimum temperature recorded at San Francisco Airport on July 8, 2026, according to the National Weather Service's Climatological Report (Daily). The temperature is divided into six ranges: 48°F or below, 49-50°F, 51-52°F, 53-54°F, 55-56°F, and 57°F or above. Each range corresponds to a distinct market outcome. Data must be obtained from the official NWS source at the specified URL, navigating to the Observed Weather tab and selecting San Francisco Airport with Daily Climate Report. Traders should note that preliminary NWS data may be subject to rounding and conversion nuances, and the official final value from the NWS Climatological Report (Daily) takes precedence over other weather services.
Prediction market odds often diverge from traditional weather analyst forecasts because they incorporate real-time trader behavior and financial incentives alongside meteorological models. While professional forecasters rely on atmospheric data and historical patterns, this market aggregates the beliefs of many participants betting their own capital on the outcome. Analyst predictions tend to be more conservative and model-driven, whereas market odds can shift rapidly based on new information or trading activity. Comparing the two reveals whether the crowd is pricing in more or less temperature volatility than experts expect for that July date in San Francisco.
This market resolves around Jul 9, 2026, after July 8, 2026 has passed and the lowest temperature for that day in San Francisco is confirmed. The outcome is determined by verifying the actual low temperature against credible public weather data sources. Once the event is verifiable, the platform settles all positions automatically, paying out traders who correctly predicted the temperature range. Your winnings depend on which outcome band you held and whether it matches the verified low for that date.
Several factors could shift odds in this market before July 2026. Seasonal weather pattern updates, El Niño or La Niña forecasts, and long-range climate models may influence trader expectations of San Francisco's summer temperatures. Major atmospheric events or shifts in historical climate data could prompt repricing. As the event date draws closer, short-range meteorological forecasts become more reliable and often trigger sharp price movements. Breaking news about unusual weather systems or heat waves in the region could also drive sudden trading activity and change the implied probabilities across different temperature outcome bands.