Latest National Weather Service guidance and ensemble model runs from GFS and ECMWF position Chicago's high temperature at O'Hare International Airport—the official observing site—near 73–75°F on May 15, driving the 52% market-implied probability for 74°F or higher as traders weigh a warming trend amid southerly winds and building upper-level ridge. Observed temperatures on May 14 climbed into the upper 60s to low 70s°F, aligning with NWS Chicago's May 13 outlook for incremental heating through Friday before showers and thunderstorms arrive, potentially capping peaks; the 25.5% odds on 72–73°F reflect this uncertainty in cloud cover and convective timing. May 15 climatological normals hover at 70.2°F, but recent dry conditions favor above-normal warmth absent major disruptions, with final 12Z model updates expected to refine land surface and boundary layer forecasts before resolution.
Resumo experimental gerado por IA com dados do Polymarket. Isto não é aconselhamento de trading e não tem qualquer papel na resolução deste mercado. · AtualizadoHighest temperature in Chicago on May 15?
Highest temperature in Chicago on May 15?
74°F or higher 54%
72-73°F 27%
70-71°F 19%
68-69°F 3.5%
$30,797 Vol.
$30,797 Vol.
55°F or below
<1%
56-57°F
<1%
58-59°F
<1%
60-61°F
<1%
62-63°F
<1%
64-65°F
1%
66-67°F
1%
68-69°F
4%
70-71°F
19%
72-73°F
27%
74°F or higher
54%
74°F or higher 54%
72-73°F 27%
70-71°F 19%
68-69°F 3.5%
$30,797 Vol.
$30,797 Vol.
55°F or below
<1%
56-57°F
<1%
58-59°F
<1%
60-61°F
<1%
62-63°F
<1%
64-65°F
1%
66-67°F
1%
68-69°F
4%
70-71°F
19%
72-73°F
27%
74°F or higher
54%
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 Chicago O'Hare Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/us/il/chicago/KORD.
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.
Mercado Aberto: May 13, 2026, 12:05 AM ET
Fonte de resolução
https://www.wunderground.com/history/daily/us/il/chicago/KORDResolver
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 Chicago O'Hare Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/us/il/chicago/KORD.
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.
Fonte de resolução
https://www.wunderground.com/history/daily/us/il/chicago/KORDResolver
0x69c47De9D...Latest National Weather Service guidance and ensemble model runs from GFS and ECMWF position Chicago's high temperature at O'Hare International Airport—the official observing site—near 73–75°F on May 15, driving the 52% market-implied probability for 74°F or higher as traders weigh a warming trend amid southerly winds and building upper-level ridge. Observed temperatures on May 14 climbed into the upper 60s to low 70s°F, aligning with NWS Chicago's May 13 outlook for incremental heating through Friday before showers and thunderstorms arrive, potentially capping peaks; the 25.5% odds on 72–73°F reflect this uncertainty in cloud cover and convective timing. May 15 climatological normals hover at 70.2°F, but recent dry conditions favor above-normal warmth absent major disruptions, with final 12Z model updates expected to refine land surface and boundary layer forecasts before resolution.
Resumo experimental gerado por IA com dados do Polymarket. Isto não é aconselhamento de trading e não tem qualquer papel na resolução deste mercado. · Atualizado
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