**Persistent marine layer influence and on-shore flow are keeping San Francisco’s daytime high modest on September 20, 2026.** Official National Weather Service forecasts and multiple models project a high near 63–64°F under mostly cloudy skies, with west-southwest winds of 8–15 mph advecting cool Pacific air and maintaining a deep marine layer that limits solar heating. This aligns closely with the market’s leading 64–65°F bin at 52.5% implied probability. September climatology shows an average high of about 71°F, but a stronger-than-normal marine layer has produced below-average readings the past couple of days, with low stratus and fog persisting into midday. No offshore wind event or ridge strengthening is expected today to allow greater warming, so probabilities cluster tightly around the low-to-mid 60s. Later in the week, model guidance indicates compression of the marine layer and modest warming, but those shifts arrive after today’s resolution window. Traders appear to be weighting the current NWS and mesoscale consensus heavily, producing the observed concentration of probability mass between 62–69°F.
Experimentelle KI-generierte Zusammenfassung mit Polymarket-Daten. Dies ist keine Handelsberatung und spielt keine Rolle bei der Auflösung dieses Marktes. · AktualisiertHöchste Temperatur in San Francisco am 20. September?
Höchste Temperatur in San Francisco am 20. September?
64-65°F 63%
62-63°F 18%
66-67°F 18%
68-69°F 11%
$33,844 Vol.
$33,844 Vol.
20. Sep. 2026
59°F oder niedriger
<1%
60-61°F
<1%
62-63°F
21%
64-65°F
57%
66-67°F
18%
68-69°F
11%
70-71°F
2%
72-73°F
<1%
74-75°F
<1%
76-77°F
<1%
78°F oder höher
<1%
64-65°F 63%
62-63°F 18%
66-67°F 18%
68-69°F 11%
$33,844 Vol.
$33,844 Vol.
20. Sep. 2026
59°F oder niedriger
$1,778 Vol.
<1%
60-61°F
$2,846 Vol.
<1%
62-63°F
$5,826 Vol.
21%
64-65°F
$4,595 Vol.
57%
66-67°F
$3,257 Vol.
18%
68-69°F
$2,879 Vol.
11%
70-71°F
$2,653 Vol.
2%
72-73°F
$5,286 Vol.
<1%
74-75°F
$3,498 Vol.
<1%
76-77°F
$1,105 Vol.
<1%
78°F oder höher
$121 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 20 Sep '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.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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 influence and on-shore flow are keeping San Francisco’s daytime high modest on September 20, 2026.** Official National Weather Service forecasts and multiple models project a high near 63–64°F under mostly cloudy skies, with west-southwest winds of 8–15 mph advecting cool Pacific air and maintaining a deep marine layer that limits solar heating. This aligns closely with the market’s leading 64–65°F bin at 52.5% implied probability.
September climatology shows an average high of about 71°F, but a stronger-than-normal marine layer has produced below-average readings the past couple of days, with low stratus and fog persisting into midday. No offshore wind event or ridge strengthening is expected today to allow greater warming, so probabilities cluster tightly around the low-to-mid 60s. Later in the week, model guidance indicates compression of the marine layer and modest warming, but those shifts arrive after today’s resolution window. Traders appear to be weighting the current NWS and mesoscale consensus heavily, producing the observed concentration of probability mass between 62–69°F.
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 20 Sep '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.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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.
Markt eröffnet: Sep 18, 2026, 7:56 AM ET
Volumen
$33,844Enddatum
20. Sep. 2026Markt eröffnet
Sep 18, 2026, 7:56 AM ETAbwicklungsquelle
https://www.weather.gov/wrh/timeseries?site=ksfoAbwickler
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 20 Sep '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.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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 influence and on-shore flow are keeping San Francisco’s daytime high modest on September 20, 2026.** Official National Weather Service forecasts and multiple models project a high near 63–64°F under mostly cloudy skies, with west-southwest winds of 8–15 mph advecting cool Pacific air and maintaining a deep marine layer that limits solar heating. This aligns closely with the market’s leading 64–65°F bin at 52.5% implied probability.
September climatology shows an average high of about 71°F, but a stronger-than-normal marine layer has produced below-average readings the past couple of days, with low stratus and fog persisting into midday. No offshore wind event or ridge strengthening is expected today to allow greater warming, so probabilities cluster tightly around the low-to-mid 60s. Later in the week, model guidance indicates compression of the marine layer and modest warming, but those shifts arrive after today’s resolution window. Traders appear to be weighting the current NWS and mesoscale consensus heavily, producing the observed concentration of probability mass between 62–69°F.
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 20 Sep '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.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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.
Volumen
$33,844Enddatum
20. Sep. 2026Markt eröffnet
Sep 18, 2026, 7:56 AM ETAbwicklungsquelle
https://www.weather.gov/wrh/timeseries?site=ksfoAbwickler
0x69c47De9D...**Persistent marine layer influence and on-shore flow are keeping San Francisco’s daytime high modest on September 20, 2026.** Official National Weather Service forecasts and multiple models project a high near 63–64°F under mostly cloudy skies, with west-southwest winds of 8–15 mph advecting cool Pacific air and maintaining a deep marine layer that limits solar heating. This aligns closely with the market’s leading 64–65°F bin at 52.5% implied probability. September climatology shows an average high of about 71°F, but a stronger-than-normal marine layer has produced below-average readings the past couple of days, with low stratus and fog persisting into midday. No offshore wind event or ridge strengthening is expected today to allow greater warming, so probabilities cluster tightly around the low-to-mid 60s. Later in the week, model guidance indicates compression of the marine layer and modest warming, but those shifts arrive after today’s resolution window. Traders appear to be weighting the current NWS and mesoscale consensus heavily, producing the observed concentration of probability mass between 62–69°F.
Experimentelle KI-generierte Zusammenfassung mit Polymarket-Daten. Dies ist keine Handelsberatung und spielt keine Rolle bei der Auflösung dieses Marktes. · Aktualisiert
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