Recent National Weather Service forecasts highlight a persistent marine layer and onshore westerly flow as the dominant drivers keeping San Francisco's June 21 high likely in the mid-to-upper 60s, aligning with the closely matched market odds for 66-67°F and 70-71°F. This classic summer pattern brings stratus clouds and cool Pacific air that suppress daytime heating along the coast, consistent with climatological baselines where June highs at official stations average near 68-70°F amid frequent fog. Model consensus shows limited warming potential due to steady winds and cloud cover, though slight variations in marine layer depth could shift outcomes into adjacent bins. Traders are weighting these verified atmospheric conditions heavily ahead of final forecast updates and official NWS resolution data tomorrow.
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 June 21?
Highest temperature in San Francisco on June 21?
68-69°F 100.0%
59°F or below <1%
60-61°F <1%
62-63°F <1%
$55,799 Vol.
$55,799 Vol.
Jun 21, 2026
59°F or below
No
60-61°F
No
62-63°F
No
64-65°F
No
66-67°F
No
68-69°F
Yes
70-71°F
No
72-73°F
No
74-75°F
No
76-77°F
No
78°F or higher
No
68-69°F 100.0%
59°F or below <1%
60-61°F <1%
62-63°F <1%
$55,799 Vol.
$55,799 Vol.
Jun 21, 2026
59°F or below
$1,208 Vol.
No
60-61°F
$4,385 Vol.
No
62-63°F
$10,049 Vol.
No
64-65°F
$9,179 Vol.
No
66-67°F
$6,725 Vol.
No
68-69°F
$6,538 Vol.
Yes
70-71°F
$7,651 Vol.
No
72-73°F
$3,855 Vol.
No
74-75°F
$1,847 Vol.
No
76-77°F
$1,383 Vol.
No
78°F or higher
$2,980 Vol.
No
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 21 Jun '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.Recent National Weather Service forecasts highlight a persistent marine layer and onshore westerly flow as the dominant drivers keeping San Francisco's June 21 high likely in the mid-to-upper 60s, aligning with the closely matched market odds for 66-67°F and 70-71°F. This classic summer pattern brings stratus clouds and cool Pacific air that suppress daytime heating along the coast, consistent with climatological baselines where June highs at official stations average near 68-70°F amid frequent fog. Model consensus shows limited warming potential due to steady winds and cloud cover, though slight variations in marine layer depth could shift outcomes into adjacent bins. Traders are weighting these verified atmospheric conditions heavily ahead of final forecast updates and official NWS resolution data tomorrow.
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 21 Jun '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.
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: Jun 19, 2026, 9:05 PM ET
Volume
$55,799End Date
Jun 21, 2026Market Opened
Jun 19, 2026, 9:05 PM ETResolution Source
https://www.wunderground.com/history/daily/us/ca/san-francisco/KSFOResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
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 21 Jun '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.Recent National Weather Service forecasts highlight a persistent marine layer and onshore westerly flow as the dominant drivers keeping San Francisco's June 21 high likely in the mid-to-upper 60s, aligning with the closely matched market odds for 66-67°F and 70-71°F. This classic summer pattern brings stratus clouds and cool Pacific air that suppress daytime heating along the coast, consistent with climatological baselines where June highs at official stations average near 68-70°F amid frequent fog. Model consensus shows limited warming potential due to steady winds and cloud cover, though slight variations in marine layer depth could shift outcomes into adjacent bins. Traders are weighting these verified atmospheric conditions heavily ahead of final forecast updates and official NWS resolution data tomorrow.
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 21 Jun '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.
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
$55,799End Date
Jun 21, 2026Market Opened
Jun 19, 2026, 9:05 PM ETResolution Source
https://www.wunderground.com/history/daily/us/ca/san-francisco/KSFOResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Recent National Weather Service forecasts highlight a persistent marine layer and onshore westerly flow as the dominant drivers keeping San Francisco's June 21 high likely in the mid-to-upper 60s, aligning with the closely matched market odds for 66-67°F and 70-71°F. This classic summer pattern brings stratus clouds and cool Pacific air that suppress daytime heating along the coast, consistent with climatological baselines where June highs at official stations average near 68-70°F amid frequent fog. Model consensus shows limited warming potential due to steady winds and cloud cover, though slight variations in marine layer depth could shift outcomes into adjacent bins. Traders are weighting these verified atmospheric conditions heavily ahead of final forecast updates and official NWS resolution data tomorrow.
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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