National Weather Service short-range forecasts project a high temperature of 64-65°F in San Francisco on May 1, aligning with trader consensus at 42% implied probability, due to persistent marine layer stratus clouds and light onshore winds capping coastal warming. This reflects ensemble model agreement from recent GFS and NAM runs, showing midday peaks in the mid-60s after typical morning fog burn-off, consistent with May climatological normals averaging 64°F highs downtown. Late April observations at nearby SFO airport—highs of 63-66°F on April 27-29—indicate stabilization from an earlier cool spell, positioning 62-63°F (27%) and 66-67°F (23%) as viable alternatives amid uncertainty in stratus persistence. Watch for the 18z model update and evening NWS briefing for potential shifts.
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 May 1?
Highest temperature in San Francisco on May 1?
64-65°F 41.3%
62-63°F 26.6%
66-67°F 24%
68°F or higher 9%
$14,183 Vol.
$14,183 Vol.
49°F or below
<1%
50-51°F
<1%
52-53°F
<1%
54-55°F
<1%
56-57°F
<1%
58-59°F
<1%
60-61°F
4%
62-63°F
27%
64-65°F
41%
66-67°F
24%
68°F or higher
9%
64-65°F 41.3%
62-63°F 26.6%
66-67°F 24%
68°F or higher 9%
$14,183 Vol.
$14,183 Vol.
49°F or below
<1%
50-51°F
<1%
52-53°F
<1%
54-55°F
<1%
56-57°F
<1%
58-59°F
<1%
60-61°F
4%
62-63°F
27%
64-65°F
41%
66-67°F
24%
68°F or higher
9%
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 29, 2026, 12:08 AM 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...National Weather Service short-range forecasts project a high temperature of 64-65°F in San Francisco on May 1, aligning with trader consensus at 42% implied probability, due to persistent marine layer stratus clouds and light onshore winds capping coastal warming. This reflects ensemble model agreement from recent GFS and NAM runs, showing midday peaks in the mid-60s after typical morning fog burn-off, consistent with May climatological normals averaging 64°F highs downtown. Late April observations at nearby SFO airport—highs of 63-66°F on April 27-29—indicate stabilization from an earlier cool spell, positioning 62-63°F (27%) and 66-67°F (23%) as viable alternatives amid uncertainty in stratus persistence. Watch for the 18z model update and evening NWS briefing for potential shifts.
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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