Latest National Weather Service forecasts and GFS/ECMWF model ensembles project a high near 67-69°F at San Francisco International Airport (KSFO) on April 18, fueling trader consensus for 68°F or higher at 66% implied probability amid reduced marine stratus coverage. Strengthening upper-level ridging offshore promotes northwesterly winds eroding the coastal boundary layer by midday, enhancing insolation and boosting temperatures 2-4°F above the climatological April normal of 66°F. Recent observations show a warming trend since early April's cool, rainy pattern, with highs reaching mid-60s over the past 48 hours under drier subsidence aloft. Uncertainty persists in marine layer persistence; evening NWS forecast discussions and tomorrow's model runs could shift odds as resolution nears.
Riepilogo sperimentale generato dall'AI con riferimento ai dati di Polymarket. Questo non è un consiglio di trading e non ha alcun ruolo nella risoluzione di questo mercato. · AggiornatoHighest temperature in San Francisco on April 18?
Highest temperature in San Francisco on April 18?
68°F or higher 64%
66-67°F 26%
64-65°F 8%
60-61°F 3.6%
49°F or below
<1%
50-51°F
<1%
52-53°F
<1%
54-55°F
<1%
56-57°F
1%
58-59°F
1%
60-61°F
4%
62-63°F
3%
64-65°F
8%
66-67°F
26%
68°F or higher
70%
68°F or higher 64%
66-67°F 26%
64-65°F 8%
60-61°F 3.6%
49°F or below
<1%
50-51°F
<1%
52-53°F
<1%
54-55°F
<1%
56-57°F
1%
58-59°F
1%
60-61°F
4%
62-63°F
3%
64-65°F
8%
66-67°F
26%
68°F or higher
70%
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the San Francisco International Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/us/ca/san-francisco/KSFO.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve to "Yes" until all data for this date has been finalized.
The resolution source for this market measures temperatures to whole degrees Fahrenheit (eg, 21°F). Thus, this is the level of precision that will be used when resolving the market.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Mercato aperto: Apr 16, 2026, 12:27 AM ET
Fonte di risoluzione
https://www.wunderground.com/history/daily/us/ca/san-francisco/KSFOResolver
0x69c47De9D...The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the San Francisco International Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/us/ca/san-francisco/KSFO.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve to "Yes" until all data for this date has been finalized.
The resolution source for this market measures temperatures to whole degrees Fahrenheit (eg, 21°F). Thus, this is the level of precision that will be used when resolving the market.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Fonte di risoluzione
https://www.wunderground.com/history/daily/us/ca/san-francisco/KSFOResolver
0x69c47De9D...Latest National Weather Service forecasts and GFS/ECMWF model ensembles project a high near 67-69°F at San Francisco International Airport (KSFO) on April 18, fueling trader consensus for 68°F or higher at 66% implied probability amid reduced marine stratus coverage. Strengthening upper-level ridging offshore promotes northwesterly winds eroding the coastal boundary layer by midday, enhancing insolation and boosting temperatures 2-4°F above the climatological April normal of 66°F. Recent observations show a warming trend since early April's cool, rainy pattern, with highs reaching mid-60s over the past 48 hours under drier subsidence aloft. Uncertainty persists in marine layer persistence; evening NWS forecast discussions and tomorrow's model runs could shift odds as resolution nears.
Riepilogo sperimentale generato dall'AI con riferimento ai dati di Polymarket. Questo non è un consiglio di trading e non ha alcun ruolo nella risoluzione di questo mercato. · Aggiornato
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