National Weather Service forecasts for Seattle on August 3 point to sunny conditions under a stable high-pressure ridge, supporting daytime highs in the mid-70s with light winds and minimal marine influence. Model consensus from recent runs shows temperatures peaking near 74–76°F at Sea-Tac and downtown stations, aligning with the market’s leading 76–77°F (39.5%) and 78–79°F (29.5%) bins and typical August climatology around 76°F. Cooler marine air intrusion or slight model cooling could favor the 74–75°F outcome (17%), while any unexpected warming would push toward 80°F or higher, though probabilities remain low given current steering patterns. Traders are weighting these official guidance updates heavily ahead of final observations.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Seattle on August 3?
76-77°F 38%
78-79°F 30%
74-75°F 18%
72-73°F 9%
67°F or below
<1%
68-69°F
1%
70-71°F
2%
72-73°F
9%
74-75°F
18%
76-77°F
38%
78-79°F
30%
80-81°F
5%
82-83°F
3%
84-85°F
2%
86°F or higher
<1%
76-77°F 38%
78-79°F 30%
74-75°F 18%
72-73°F 9%
67°F or below
<1%
68-69°F
1%
70-71°F
2%
72-73°F
9%
74-75°F
18%
76-77°F
38%
78-79°F
30%
80-81°F
5%
82-83°F
3%
84-85°F
2%
86°F or higher
<1%
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Seattle-Tacoma International Airport Station, available here: https://www.wunderground.com/history/daily/us/wa/seatac/KSEA.
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: Aug 1, 2026, 9:03 PM ET
Resolution Source
https://www.wunderground.com/history/daily/us/wa/seatac/KSEAResolver
0x69c47De9D...The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Seattle-Tacoma International Airport Station, available here: https://www.wunderground.com/history/daily/us/wa/seatac/KSEA.
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.
Resolution Source
https://www.wunderground.com/history/daily/us/wa/seatac/KSEAResolver
0x69c47De9D...National Weather Service forecasts for Seattle on August 3 point to sunny conditions under a stable high-pressure ridge, supporting daytime highs in the mid-70s with light winds and minimal marine influence. Model consensus from recent runs shows temperatures peaking near 74–76°F at Sea-Tac and downtown stations, aligning with the market’s leading 76–77°F (39.5%) and 78–79°F (29.5%) bins and typical August climatology around 76°F. Cooler marine air intrusion or slight model cooling could favor the 74–75°F outcome (17%), while any unexpected warming would push toward 80°F or higher, though probabilities remain low given current steering patterns. Traders are weighting these official guidance updates heavily ahead of final observations.
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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