Trader consensus has overwhelmingly priced in a Seattle high of 54-55°F on March 19, driven by aligned short-range forecasts from NOAA's National Weather Service and global models like ECMWF and GFS, which project cloudy skies, light precipitation, and highs stabilizing near seasonal norms of 54°F amid persistent marine influence. Ensemble predictions show low variance, with 500mb troughing suppressing warmer air advection. Historical March data from Seattle-Tacoma Airport reinforces this, with 70% of highs in the low-50s during similar Pacific Northwest setups. Realistic challenges include an unexpected ridge amplification offshore or breakdown in low-level stratus, potentially pushing temps toward 58°F+, though model consensus deems this under 5% likely ahead of hourly observations.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Seattle on March 19?
Highest temperature in Seattle on March 19?
54-55°F 100.0%
43°F or below <1%
44-45°F <1%
46-47°F <1%
$2,652 Vol.
$2,652 Vol.
43°F or below
No
44-45°F
No
46-47°F
No
48-49°F
No
50-51°F
No
52-53°F
No
54-55°F
Yes
56-57°F
No
58-59°F
No
60-61°F
No
62°F or higher
No
54-55°F 100.0%
43°F or below <1%
44-45°F <1%
46-47°F <1%
$2,652 Vol.
$2,652 Vol.
43°F or below
No
44-45°F
No
46-47°F
No
48-49°F
No
50-51°F
No
52-53°F
No
54-55°F
Yes
56-57°F
No
58-59°F
No
60-61°F
No
62°F or higher
No
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 Seattle-Tacoma International Airport Station once information is finalized, 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 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: Mar 15, 2026, 6:02 AM ET
Resolution Source
https://www.wunderground.com/history/daily/us/wa/seatac/KSEAResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Resolution Source
https://www.wunderground.com/history/daily/us/wa/seatac/KSEAResolver
0x69c47De9D...Trader consensus has overwhelmingly priced in a Seattle high of 54-55°F on March 19, driven by aligned short-range forecasts from NOAA's National Weather Service and global models like ECMWF and GFS, which project cloudy skies, light precipitation, and highs stabilizing near seasonal norms of 54°F amid persistent marine influence. Ensemble predictions show low variance, with 500mb troughing suppressing warmer air advection. Historical March data from Seattle-Tacoma Airport reinforces this, with 70% of highs in the low-50s during similar Pacific Northwest setups. Realistic challenges include an unexpected ridge amplification offshore or breakdown in low-level stratus, potentially pushing temps toward 58°F+, though model consensus deems this under 5% likely ahead of hourly observations.
Experimental AI-generated summary referencing Polymarket data · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions