**Current NWS and model guidance indicate a high in the low-to-mid 70s for Chicago on September 18, with official readings most likely at O’Hare or Midway Airport.** Easterly flow off Lake Michigan is expected to moderate daytime heating near the lakefront, keeping maxima cooler than inland suburbs and favoring the 70–75 °F range that dominates trader positioning. Mostly cloudy skies and moderate humidity will further limit insolation, while any breaks in cloud cover or a slight wind shift could push readings toward the upper end of that band. Historical September averages near 75 °F provide context, but the present synoptic pattern—persistent onshore flow and limited mixing—explains why probabilities cluster tightly around 72–75 °F rather than higher or lower outcomes. Updated model runs and the evening forecast discussion will be the next key inputs for traders.
Résumé expérimental généré par IA à partir des données Polymarket. Ceci n'est pas un conseil de trading et ne joue aucun rôle dans la résolution de ce marché. · Mis à jourLa température la plus élevée à Chicago le 18 septembre ?
La température la plus élevée à Chicago le 18 septembre ?
72-73 °F 37%
74-75°F 28%
70-71°F 21%
68-69°F 9%
NOUVEAU
NOUVEAU
18 sept. 2026
63°F ou moins
<1%
64-65°F
1%
66-67°F
2%
68-69°F
9%
70-71°F
21%
72-73 °F
37%
74-75°F
28%
76-77 °F
6%
78-79 °F
3%
80-81°F
1%
82°F ou plus
<1%
72-73 °F 37%
74-75°F 28%
70-71°F 21%
68-69°F 9%
NOUVEAU
NOUVEAU
18 sept. 2026
63°F ou moins
$95 Vol.
<1%
64-65°F
$173 Vol.
1%
66-67°F
$31 Vol.
2%
68-69°F
$1,990 Vol.
9%
70-71°F
$1,345 Vol.
21%
72-73 °F
$322 Vol.
37%
74-75°F
$461 Vol.
28%
76-77 °F
$152 Vol.
6%
78-79 °F
$113 Vol.
3%
80-81°F
$125 Vol.
1%
82°F ou plus
$181 Vol.
<1%
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Chicago O'Hare Intl Airport Station in degrees Fahrenheit on 18 Sep '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=kord
This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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.**Current NWS and model guidance indicate a high in the low-to-mid 70s for Chicago on September 18, with official readings most likely at O’Hare or Midway Airport.** Easterly flow off Lake Michigan is expected to moderate daytime heating near the lakefront, keeping maxima cooler than inland suburbs and favoring the 70–75 °F range that dominates trader positioning. Mostly cloudy skies and moderate humidity will further limit insolation, while any breaks in cloud cover or a slight wind shift could push readings toward the upper end of that band. Historical September averages near 75 °F provide context, but the present synoptic pattern—persistent onshore flow and limited mixing—explains why probabilities cluster tightly around 72–75 °F rather than higher or lower outcomes. Updated model runs and the evening forecast discussion will be the next key inputs for traders.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Chicago O'Hare Intl Airport Station in degrees Fahrenheit on 18 Sep '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=kord
This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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 NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=kord
This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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.
Marché ouvert : Sep 16, 2026, 3:56 AM ET
Volume
$4,987Date de fin
18 sept. 2026Marché ouvert
Sep 16, 2026, 3:56 AM ETSource de résolution
https://www.weather.gov/wrh/timeseries?site=kordRésolveur
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Chicago O'Hare Intl Airport Station in degrees Fahrenheit on 18 Sep '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=kord
This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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.**Current NWS and model guidance indicate a high in the low-to-mid 70s for Chicago on September 18, with official readings most likely at O’Hare or Midway Airport.** Easterly flow off Lake Michigan is expected to moderate daytime heating near the lakefront, keeping maxima cooler than inland suburbs and favoring the 70–75 °F range that dominates trader positioning. Mostly cloudy skies and moderate humidity will further limit insolation, while any breaks in cloud cover or a slight wind shift could push readings toward the upper end of that band. Historical September averages near 75 °F provide context, but the present synoptic pattern—persistent onshore flow and limited mixing—explains why probabilities cluster tightly around 72–75 °F rather than higher or lower outcomes. Updated model runs and the evening forecast discussion will be the next key inputs for traders.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Chicago O'Hare Intl Airport Station in degrees Fahrenheit on 18 Sep '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=kord
This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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 NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=kord
This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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
$4,987Date de fin
18 sept. 2026Marché ouvert
Sep 16, 2026, 3:56 AM ETSource de résolution
https://www.weather.gov/wrh/timeseries?site=kordRésolveur
0x69c47De9D...**Current NWS and model guidance indicate a high in the low-to-mid 70s for Chicago on September 18, with official readings most likely at O’Hare or Midway Airport.** Easterly flow off Lake Michigan is expected to moderate daytime heating near the lakefront, keeping maxima cooler than inland suburbs and favoring the 70–75 °F range that dominates trader positioning. Mostly cloudy skies and moderate humidity will further limit insolation, while any breaks in cloud cover or a slight wind shift could push readings toward the upper end of that band. Historical September averages near 75 °F provide context, but the present synoptic pattern—persistent onshore flow and limited mixing—explains why probabilities cluster tightly around 72–75 °F rather than higher or lower outcomes. Updated model runs and the evening forecast discussion will be the next key inputs for traders.
Résumé expérimental généré par IA à partir des données Polymarket. Ceci n'est pas un conseil de trading et ne joue aucun rôle dans la résolution de ce marché. · Mis à jour
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