Recent National Weather Service model runs and ensemble guidance point to a strong upper-level ridge promoting subsidence warming and mostly sunny skies over western Washington, placing Seattle's June 23 maximum in the mid-to-upper 80s at Sea-Tac. Trader consensus clusters on 86–89°F bins because historical analogs and current soundings show limited marine-layer moderation from Puget Sound under light northerly flow, while small shifts in ridge position or timing of any onshore breeze could trim or boost the peak by 2–3°F. Above-normal seasonal temperatures driven by the broader Pacific Northwest heat pattern add upward pressure, yet coastal influences and typical diurnal ranges keep probabilities spread rather than concentrated above 90°F.
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 June 23?
Highest temperature in Seattle on June 23?
88-89°F 100.0%
79°F or below <1%
80-81°F <1%
82-83°F <1%
$71,337 Vol.
$71,337 Vol.
Jun 23, 2026
79°F or below
No
80-81°F
No
82-83°F
No
84-85°F
No
86-87°F
No
88-89°F
Yes
90-91°F
No
92-93°F
No
94-95°F
No
96-97°F
No
98°F or higher
No
88-89°F 100.0%
79°F or below <1%
80-81°F <1%
82-83°F <1%
$71,337 Vol.
$71,337 Vol.
Jun 23, 2026
79°F or below
$432 Vol.
No
80-81°F
$2,320 Vol.
No
82-83°F
$2,723 Vol.
No
84-85°F
$8,653 Vol.
No
86-87°F
$10,451 Vol.
No
88-89°F
$12,687 Vol.
Yes
90-91°F
$12,506 Vol.
No
92-93°F
$18,051 Vol.
No
94-95°F
$2,300 Vol.
No
96-97°F
$506 Vol.
No
98°F or higher
$708 Vol.
No
This market will resolve to the temperature range that contains the highest temperature recorded at the Seattle-Tacoma International Airport Station in degrees Fahrenheit on 23 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 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.Recent National Weather Service model runs and ensemble guidance point to a strong upper-level ridge promoting subsidence warming and mostly sunny skies over western Washington, placing Seattle's June 23 maximum in the mid-to-upper 80s at Sea-Tac. Trader consensus clusters on 86–89°F bins because historical analogs and current soundings show limited marine-layer moderation from Puget Sound under light northerly flow, while small shifts in ridge position or timing of any onshore breeze could trim or boost the peak by 2–3°F. Above-normal seasonal temperatures driven by the broader Pacific Northwest heat pattern add upward pressure, yet coastal influences and typical diurnal ranges keep probabilities spread rather than concentrated above 90°F.
This market will resolve to the temperature range that contains the highest temperature recorded at the Seattle-Tacoma International Airport Station in degrees Fahrenheit on 23 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 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.
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: Jun 21, 2026, 9:04 PM ET
Volume
$71,337End Date
Jun 23, 2026Market Opened
Jun 21, 2026, 9:04 PM ETResolution Source
https://www.wunderground.com/history/daily/us/wa/seatac/KSEAResolver
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 Seattle-Tacoma International Airport Station in degrees Fahrenheit on 23 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 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.Recent National Weather Service model runs and ensemble guidance point to a strong upper-level ridge promoting subsidence warming and mostly sunny skies over western Washington, placing Seattle's June 23 maximum in the mid-to-upper 80s at Sea-Tac. Trader consensus clusters on 86–89°F bins because historical analogs and current soundings show limited marine-layer moderation from Puget Sound under light northerly flow, while small shifts in ridge position or timing of any onshore breeze could trim or boost the peak by 2–3°F. Above-normal seasonal temperatures driven by the broader Pacific Northwest heat pattern add upward pressure, yet coastal influences and typical diurnal ranges keep probabilities spread rather than concentrated above 90°F.
This market will resolve to the temperature range that contains the highest temperature recorded at the Seattle-Tacoma International Airport Station in degrees Fahrenheit on 23 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 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.
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.
Volume
$71,337End Date
Jun 23, 2026Market Opened
Jun 21, 2026, 9:04 PM ETResolution Source
https://www.wunderground.com/history/daily/us/wa/seatac/KSEAResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Recent National Weather Service model runs and ensemble guidance point to a strong upper-level ridge promoting subsidence warming and mostly sunny skies over western Washington, placing Seattle's June 23 maximum in the mid-to-upper 80s at Sea-Tac. Trader consensus clusters on 86–89°F bins because historical analogs and current soundings show limited marine-layer moderation from Puget Sound under light northerly flow, while small shifts in ridge position or timing of any onshore breeze could trim or boost the peak by 2–3°F. Above-normal seasonal temperatures driven by the broader Pacific Northwest heat pattern add upward pressure, yet coastal influences and typical diurnal ranges keep probabilities spread rather than concentrated above 90°F.
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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