**Persistent marine layer influence and onshore flow are keeping San Francisco’s official high temperature expectations tightly clustered in the mid-to-upper 60s for June 25.** National Weather Service guidance and short-range models show a shallow marine layer with west-southwest winds of 10–20 mph limiting daytime warming near the coast, producing a forecast high near 63°F after morning clouds. Traders assign the highest implied probabilities to the 66–69°F range because small variations in layer depth, wind timing, or afternoon clearing can add a few degrees without breaking the overall cool pattern. Historical June climatology reinforces this narrow band, with rare excursions above 70°F under strong onshore regimes, while any model shift toward deeper mixing or reduced cloud cover could quickly favor the upper bins.
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 25?
Highest temperature in San Francisco on June 25?
68-69°F 100.0%
63°F or below <1%
64-65°F <1%
66-67°F <1%
$106,985 Vol.
$106,985 Vol.
Jun 25, 2026
63°F or below
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
78-79°F
No
80-81°F
No
82°F or higher
No
68-69°F 100.0%
63°F or below <1%
64-65°F <1%
66-67°F <1%
$106,985 Vol.
$106,985 Vol.
Jun 25, 2026
63°F or below
$4,872 Vol.
No
64-65°F
$7,238 Vol.
No
66-67°F
$10,209 Vol.
No
68-69°F
$19,735 Vol.
Yes
70-71°F
$8,287 Vol.
No
72-73°F
$6,284 Vol.
No
74-75°F
$4,001 Vol.
No
76-77°F
$5,505 Vol.
No
78-79°F
$3,114 Vol.
No
80-81°F
$6,797 Vol.
No
82°F or higher
$30,943 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 25 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.**Persistent marine layer influence and onshore flow are keeping San Francisco’s official high temperature expectations tightly clustered in the mid-to-upper 60s for June 25.** National Weather Service guidance and short-range models show a shallow marine layer with west-southwest winds of 10–20 mph limiting daytime warming near the coast, producing a forecast high near 63°F after morning clouds. Traders assign the highest implied probabilities to the 66–69°F range because small variations in layer depth, wind timing, or afternoon clearing can add a few degrees without breaking the overall cool pattern. Historical June climatology reinforces this narrow band, with rare excursions above 70°F under strong onshore regimes, while any model shift toward deeper mixing or reduced cloud cover could quickly favor the upper bins.
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 25 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 23, 2026, 9:03 PM ET
Volume
$106,985End Date
Jun 25, 2026Market Opened
Jun 23, 2026, 9:03 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 25 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.**Persistent marine layer influence and onshore flow are keeping San Francisco’s official high temperature expectations tightly clustered in the mid-to-upper 60s for June 25.** National Weather Service guidance and short-range models show a shallow marine layer with west-southwest winds of 10–20 mph limiting daytime warming near the coast, producing a forecast high near 63°F after morning clouds. Traders assign the highest implied probabilities to the 66–69°F range because small variations in layer depth, wind timing, or afternoon clearing can add a few degrees without breaking the overall cool pattern. Historical June climatology reinforces this narrow band, with rare excursions above 70°F under strong onshore regimes, while any model shift toward deeper mixing or reduced cloud cover could quickly favor the upper bins.
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 25 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
$106,985End Date
Jun 25, 2026Market Opened
Jun 23, 2026, 9:03 PM ETResolution Source
https://www.wunderground.com/history/daily/us/ca/san-francisco/KSFOResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
**Persistent marine layer influence and onshore flow are keeping San Francisco’s official high temperature expectations tightly clustered in the mid-to-upper 60s for June 25.** National Weather Service guidance and short-range models show a shallow marine layer with west-southwest winds of 10–20 mph limiting daytime warming near the coast, producing a forecast high near 63°F after morning clouds. Traders assign the highest implied probabilities to the 66–69°F range because small variations in layer depth, wind timing, or afternoon clearing can add a few degrees without breaking the overall cool pattern. Historical June climatology reinforces this narrow band, with rare excursions above 70°F under strong onshore regimes, while any model shift toward deeper mixing or reduced cloud cover could quickly favor the upper bins.
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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