Persistent marine layer and strong onshore flow from the cool California Current, reinforced by coastal upwelling, are capping San Francisco highs near 66°F on August 30 per National Weather Service and NOAA guidance. This setup, typical for late summer at SFO, favors the closely matched 66–67°F and 68–69°F bins that dominate trader consensus. Minor model differences in afternoon stratus thinning or lighter winds could briefly add 2–3°F through enhanced solar heating, while sustained westerly flow or thicker cloud cover would anchor readings lower. Recent days with highs in the mid-60s and climatological August averages near 70°F underscore the uncertainty traders are pricing.
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 30?
Highest temperature in San Francisco on August 30?
68-69°F 30%
66-67°F 20%
70-71°F 15%
64-65°F 12%
NEW
NEW
Aug 30, 2026
59°F or below
1%
60-61°F
4%
62-63°F
6%
64-65°F
12%
66-67°F
20%
68-69°F
30%
70-71°F
15%
72-73°F
6%
74-75°F
5%
76-77°F
3%
78°F or higher
<1%
68-69°F 30%
66-67°F 20%
70-71°F 15%
64-65°F 12%
NEW
NEW
Aug 30, 2026
59°F or below
$13 Vol.
1%
60-61°F
$0 Vol.
4%
62-63°F
$25 Vol.
6%
64-65°F
$15 Vol.
12%
66-67°F
$0 Vol.
20%
68-69°F
$151 Vol.
30%
70-71°F
$59 Vol.
15%
72-73°F
$20 Vol.
6%
74-75°F
$0 Vol.
5%
76-77°F
$15 Vol.
3%
78°F or higher
$210 Vol.
<1%
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the San Francisco International Airport Station in degrees Fahrenheit on 30 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=ksfo
This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
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 and strong onshore flow from the cool California Current, reinforced by coastal upwelling, are capping San Francisco highs near 66°F on August 30 per National Weather Service and NOAA guidance. This setup, typical for late summer at SFO, favors the closely matched 66–67°F and 68–69°F bins that dominate trader consensus. Minor model differences in afternoon stratus thinning or lighter winds could briefly add 2–3°F through enhanced solar heating, while sustained westerly flow or thicker cloud cover would anchor readings lower. Recent days with highs in the mid-60s and climatological August averages near 70°F underscore the uncertainty traders are pricing.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the San Francisco International Airport Station in degrees Fahrenheit on 30 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=ksfo
This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
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.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=ksfo
This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
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 28, 2026, 10:57 AM ET
Volume
$508End Date
Aug 30, 2026Market Opened
Aug 28, 2026, 10:57 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=ksfoResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the San Francisco International Airport Station in degrees Fahrenheit on 30 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=ksfo
This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
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 and strong onshore flow from the cool California Current, reinforced by coastal upwelling, are capping San Francisco highs near 66°F on August 30 per National Weather Service and NOAA guidance. This setup, typical for late summer at SFO, favors the closely matched 66–67°F and 68–69°F bins that dominate trader consensus. Minor model differences in afternoon stratus thinning or lighter winds could briefly add 2–3°F through enhanced solar heating, while sustained westerly flow or thicker cloud cover would anchor readings lower. Recent days with highs in the mid-60s and climatological August averages near 70°F underscore the uncertainty traders are pricing.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the San Francisco International Airport Station in degrees Fahrenheit on 30 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=ksfo
This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
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.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=ksfo
This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
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
$508End Date
Aug 30, 2026Market Opened
Aug 28, 2026, 10:57 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=ksfoResolver
0x69c47De9D...Persistent marine layer and strong onshore flow from the cool California Current, reinforced by coastal upwelling, are capping San Francisco highs near 66°F on August 30 per National Weather Service and NOAA guidance. This setup, typical for late summer at SFO, favors the closely matched 66–67°F and 68–69°F bins that dominate trader consensus. Minor model differences in afternoon stratus thinning or lighter winds could briefly add 2–3°F through enhanced solar heating, while sustained westerly flow or thicker cloud cover would anchor readings lower. Recent days with highs in the mid-60s and climatological August averages near 70°F underscore the uncertainty traders are pricing.
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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