Trader consensus on Polymarket favors a high of 64-65°F at San Francisco International Airport (KSFO) with 56.9% implied probability, closely trailed by 66°F or higher at 41.0%, reflecting uncertainty from the persistent coastal marine layer amid a warming trend. National Weather Service forecasts sunny skies today with a high near 67°F and light west winds of 5-14 mph, but overnight lows near 54°F under mostly cloudy conditions signal lingering stratus from cool Pacific waters, potentially delaying burn-off and capping peaks as seen in recent days' highs of 55-58°F. Building upper-level ridging supports continued recovery from cool anomalies, aligning with late-April climatological averages around 64°F; real-time KSFO observations will clarify as marine influence wanes or holds.
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 April 30?
Highest temperature in San Francisco on April 30?
64-65°F 44.1%
66°F or higher 32%
62-63°F 10.2%
60-61°F 1.4%
$47,688 Vol.
$47,688 Vol.
54-55°F
<1%
56-57°F
<1%
58-59°F
<1%
60-61°F
1%
62-63°F
17%
64-65°F
44%
66°F or higher
32%
64-65°F 44.1%
66°F or higher 32%
62-63°F 10.2%
60-61°F 1.4%
$47,688 Vol.
$47,688 Vol.
54-55°F
<1%
56-57°F
<1%
58-59°F
<1%
60-61°F
1%
62-63°F
17%
64-65°F
44%
66°F or higher
32%
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the San Francisco International Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Market Opened: Apr 28, 2026, 3:02 PM ET
Resolution Source
https://www.wunderground.com/history/daily/us/ca/san-francisco/KSFOResolver
0x69c47De9D...The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the San Francisco International Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Resolution Source
https://www.wunderground.com/history/daily/us/ca/san-francisco/KSFOResolver
0x69c47De9D...Trader consensus on Polymarket favors a high of 64-65°F at San Francisco International Airport (KSFO) with 56.9% implied probability, closely trailed by 66°F or higher at 41.0%, reflecting uncertainty from the persistent coastal marine layer amid a warming trend. National Weather Service forecasts sunny skies today with a high near 67°F and light west winds of 5-14 mph, but overnight lows near 54°F under mostly cloudy conditions signal lingering stratus from cool Pacific waters, potentially delaying burn-off and capping peaks as seen in recent days' highs of 55-58°F. Building upper-level ridging supports continued recovery from cool anomalies, aligning with late-April climatological averages around 64°F; real-time KSFO observations will clarify as marine influence wanes or holds.
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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