Persistent marine layer clouds and moderate onshore flow from the Pacific have kept San Francisco's afternoon highs suppressed near the long-term August average of 67–73°F at official stations. National Weather Service observations for August 17 recorded a peak of 70°F at San Francisco International Airport, directly supporting the market's 100% implied probability on the 70–71°F bin. A weak upper-level ridge provided limited warming potential without allowing strong offshore flow or clear skies that would push readings higher. Updated short-range model guidance and real-time station data refined the peak within this narrow range before market resolution. Only a significant revision in official reporting or an unusually strong sea breeze could have altered the outcome.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in San Francisco on August 17?
Highest temperature in San Francisco on August 17?
70-71°F 100.0%
61°F or below <1%
62-63°F <1%
64-65°F <1%
$27,922 Vol.
$27,922 Vol.
Aug 17, 2026
61°F or below
<1%
62-63°F
<1%
64-65°F
<1%
66-67°F
<1%
68-69°F
<1%
70-71°F
100%
72-73°F
<1%
74-75°F
<1%
76-77°F
<1%
78-79°F
<1%
80°F or higher
<1%
70-71°F 100.0%
61°F or below <1%
62-63°F <1%
64-65°F <1%
$27,922 Vol.
$27,922 Vol.
Aug 17, 2026
61°F or below
$1,364 Vol.
<1%
62-63°F
$775 Vol.
<1%
64-65°F
$1,054 Vol.
<1%
66-67°F
$2,215 Vol.
<1%
68-69°F
$3,774 Vol.
<1%
70-71°F
$6,250 Vol.
100%
72-73°F
$5,436 Vol.
<1%
74-75°F
$2,878 Vol.
<1%
76-77°F
$1,595 Vol.
<1%
78-79°F
$1,189 Vol.
<1%
80°F or higher
$1,392 Vol.
<1%
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the San Francisco International Airport Station in degrees Fahrenheit on 17 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the San Francisco International Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.Persistent marine layer clouds and moderate onshore flow from the Pacific have kept San Francisco's afternoon highs suppressed near the long-term August average of 67–73°F at official stations. National Weather Service observations for August 17 recorded a peak of 70°F at San Francisco International Airport, directly supporting the market's 100% implied probability on the 70–71°F bin. A weak upper-level ridge provided limited warming potential without allowing strong offshore flow or clear skies that would push readings higher. Updated short-range model guidance and real-time station data refined the peak within this narrow range before market resolution. Only a significant revision in official reporting or an unusually strong sea breeze could have altered the outcome.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the San Francisco International Airport Station in degrees Fahrenheit on 17 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the San Francisco International Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
This market will resolve to the temperature range that contains the highest temperature recorded at the San Francisco International Airport Station in degrees Fahrenheit on 17 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the San Francisco International Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Market Opened: Aug 15, 2026, 9:57 PM ET
Volume
$27,922End Date
Aug 17, 2026Market Opened
Aug 15, 2026, 9:57 PM ETResolution Source
https://www.wunderground.com/history/daily/us/ca/san-francisco/KSFOResolver
0x69c47De9D...This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the San Francisco International Airport Station in degrees Fahrenheit on 17 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the San Francisco International Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.Persistent marine layer clouds and moderate onshore flow from the Pacific have kept San Francisco's afternoon highs suppressed near the long-term August average of 67–73°F at official stations. National Weather Service observations for August 17 recorded a peak of 70°F at San Francisco International Airport, directly supporting the market's 100% implied probability on the 70–71°F bin. A weak upper-level ridge provided limited warming potential without allowing strong offshore flow or clear skies that would push readings higher. Updated short-range model guidance and real-time station data refined the peak within this narrow range before market resolution. Only a significant revision in official reporting or an unusually strong sea breeze could have altered the outcome.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the San Francisco International Airport Station in degrees Fahrenheit on 17 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the San Francisco International Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
This market will resolve to the temperature range that contains the highest temperature recorded at the San Francisco International Airport Station in degrees Fahrenheit on 17 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the San Francisco International Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Volume
$27,922End Date
Aug 17, 2026Market Opened
Aug 15, 2026, 9:57 PM ETResolution Source
https://www.wunderground.com/history/daily/us/ca/san-francisco/KSFOResolver
0x69c47De9D...Persistent marine layer clouds and moderate onshore flow from the Pacific have kept San Francisco's afternoon highs suppressed near the long-term August average of 67–73°F at official stations. National Weather Service observations for August 17 recorded a peak of 70°F at San Francisco International Airport, directly supporting the market's 100% implied probability on the 70–71°F bin. A weak upper-level ridge provided limited warming potential without allowing strong offshore flow or clear skies that would push readings higher. Updated short-range model guidance and real-time station data refined the peak within this narrow range before market resolution. Only a significant revision in official reporting or an unusually strong sea breeze could have altered the outcome.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
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