Official forecasts from the National Weather Service point to a partly cloudy day with a high near 66°F on August 30, driven by the persistent marine layer and strong onshore flow from the cool California Current and coastal upwelling, which keep adjacent Pacific waters near 55–58°F. This setup, reinforced by sea breezes tied to Central Valley heating, typically caps coastal maxima well below the 69.8°F climatological average. Trader focus on the closely matched 66–67°F and 68–69°F bins reflects minor model spread in afternoon clearing and wind strength, with any temporary thinning of stratus or lighter flow potentially adding 2–3°F while stronger marine influence would favor the lower end of that range. Updated NWS guidance and real-time observations over the next 48 hours will likely refine these probabilities.
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 27%
66-67°F 23%
70-71°F 18%
72-73°F 17%
NEW
NEW
Aug 30, 2026
59°F or below
1%
60-61°F
7%
62-63°F
9%
64-65°F
15%
66-67°F
23%
68-69°F
27%
70-71°F
12%
72-73°F
17%
74-75°F
8%
76-77°F
4%
78°F or higher
4%
68-69°F 27%
66-67°F 23%
70-71°F 18%
72-73°F 17%
NEW
NEW
Aug 30, 2026
59°F or below
$13 Vol.
1%
60-61°F
$0 Vol.
7%
62-63°F
$25 Vol.
9%
64-65°F
$0 Vol.
15%
66-67°F
$0 Vol.
23%
68-69°F
$37 Vol.
27%
70-71°F
$59 Vol.
12%
72-73°F
$20 Vol.
17%
74-75°F
$0 Vol.
8%
76-77°F
$0 Vol.
4%
78°F or higher
$0 Vol.
4%
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.Official forecasts from the National Weather Service point to a partly cloudy day with a high near 66°F on August 30, driven by the persistent marine layer and strong onshore flow from the cool California Current and coastal upwelling, which keep adjacent Pacific waters near 55–58°F. This setup, reinforced by sea breezes tied to Central Valley heating, typically caps coastal maxima well below the 69.8°F climatological average. Trader focus on the closely matched 66–67°F and 68–69°F bins reflects minor model spread in afternoon clearing and wind strength, with any temporary thinning of stratus or lighter flow potentially adding 2–3°F while stronger marine influence would favor the lower end of that range. Updated NWS guidance and real-time observations over the next 48 hours will likely refine these probabilities.
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
$154End 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.Official forecasts from the National Weather Service point to a partly cloudy day with a high near 66°F on August 30, driven by the persistent marine layer and strong onshore flow from the cool California Current and coastal upwelling, which keep adjacent Pacific waters near 55–58°F. This setup, reinforced by sea breezes tied to Central Valley heating, typically caps coastal maxima well below the 69.8°F climatological average. Trader focus on the closely matched 66–67°F and 68–69°F bins reflects minor model spread in afternoon clearing and wind strength, with any temporary thinning of stratus or lighter flow potentially adding 2–3°F while stronger marine influence would favor the lower end of that range. Updated NWS guidance and real-time observations over the next 48 hours will likely refine these probabilities.
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
$154End Date
Aug 30, 2026Market Opened
Aug 28, 2026, 10:57 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=ksfoResolver
0x69c47De9D...Official forecasts from the National Weather Service point to a partly cloudy day with a high near 66°F on August 30, driven by the persistent marine layer and strong onshore flow from the cool California Current and coastal upwelling, which keep adjacent Pacific waters near 55–58°F. This setup, reinforced by sea breezes tied to Central Valley heating, typically caps coastal maxima well below the 69.8°F climatological average. Trader focus on the closely matched 66–67°F and 68–69°F bins reflects minor model spread in afternoon clearing and wind strength, with any temporary thinning of stratus or lighter flow potentially adding 2–3°F while stronger marine influence would favor the lower end of that range. Updated NWS guidance and real-time observations over the next 48 hours will likely refine these probabilities.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions