**Official National Weather Service forecasts for Chicago on September 20, 2026, call for a daytime high near 68°F under persistent cloud cover, widespread showers, and breezy northeast winds of 15–20 mph with gusts to 30 mph.** These conditions limit solar heating and advect cooler air from the Great Lakes region, keeping temperatures well below the late-September climatological average of roughly 74°F. Model consensus and recent observations reinforce this cool, stable regime, positioning the 68–69°F bin as the modal outcome in trader pricing while assigning meaningful but secondary probability to 70–71°F if breaks in the clouds allow modest additional warming. Higher bins remain low-probability given the entrenched onshore flow and precipitation, and resolution will hinge on the official daily maximum reported by Chicago-area observing stations.
基於Polymarket數據的AI實驗性摘要。這不是交易建議，也不影響該市場的結算方式。 · 更新於9月20日芝加哥的最高溫度？
9月20日芝加哥的最高溫度？
70-71°F 69%
68-69°F 21%
72-73°F 8%
74-75°F <1%
$44,057 交易量
$44,057 交易量
2026-09-20
華氏59度或以下
<1%
60-61華氏度
<1%
62-63°F
<1%
64-65°F
<1%
66-67°F
<1%
68-69°F
20%
70-71°F
69%
72-73°F
8%
74-75°F
1%
76-77°F
1%
華氏78度或以上
<1%
70-71°F 69%
68-69°F 21%
72-73°F 8%
74-75°F <1%
$44,057 交易量
$44,057 交易量
2026-09-20
華氏59度或以下
$604 交易量
<1%
60-61華氏度
$111 交易量
<1%
62-63°F
$3,091 交易量
<1%
64-65°F
$4,028 交易量
<1%
66-67°F
$20,918 交易量
<1%
68-69°F
$6,035 交易量
20%
70-71°F
$3,806 交易量
69%
72-73°F
$2,726 交易量
8%
74-75°F
$1,934 交易量
1%
76-77°F
$683 交易量
1%
華氏78度或以上
$121 交易量
<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 20 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.**Official National Weather Service forecasts for Chicago on September 20, 2026, call for a daytime high near 68°F under persistent cloud cover, widespread showers, and breezy northeast winds of 15–20 mph with gusts to 30 mph.** These conditions limit solar heating and advect cooler air from the Great Lakes region, keeping temperatures well below the late-September climatological average of roughly 74°F. Model consensus and recent observations reinforce this cool, stable regime, positioning the 68–69°F bin as the modal outcome in trader pricing while assigning meaningful but secondary probability to 70–71°F if breaks in the clouds allow modest additional warming. Higher bins remain low-probability given the entrenched onshore flow and precipitation, and resolution will hinge on the official daily maximum reported by Chicago-area observing stations.
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 20 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.
市場開放時間： Sep 18, 2026, 2:56 AM ET
交易量
$44,057結束日期
2026-09-20市場開放時間
Sep 18, 2026, 2:56 AM ETThis 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 20 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.**Official National Weather Service forecasts for Chicago on September 20, 2026, call for a daytime high near 68°F under persistent cloud cover, widespread showers, and breezy northeast winds of 15–20 mph with gusts to 30 mph.** These conditions limit solar heating and advect cooler air from the Great Lakes region, keeping temperatures well below the late-September climatological average of roughly 74°F. Model consensus and recent observations reinforce this cool, stable regime, positioning the 68–69°F bin as the modal outcome in trader pricing while assigning meaningful but secondary probability to 70–71°F if breaks in the clouds allow modest additional warming. Higher bins remain low-probability given the entrenched onshore flow and precipitation, and resolution will hinge on the official daily maximum reported by Chicago-area observing stations.
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 20 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.
交易量
$44,057結束日期
2026-09-20市場開放時間
Sep 18, 2026, 2:56 AM ET**Official National Weather Service forecasts for Chicago on September 20, 2026, call for a daytime high near 68°F under persistent cloud cover, widespread showers, and breezy northeast winds of 15–20 mph with gusts to 30 mph.** These conditions limit solar heating and advect cooler air from the Great Lakes region, keeping temperatures well below the late-September climatological average of roughly 74°F. Model consensus and recent observations reinforce this cool, stable regime, positioning the 68–69°F bin as the modal outcome in trader pricing while assigning meaningful but secondary probability to 70–71°F if breaks in the clouds allow modest additional warming. Higher bins remain low-probability given the entrenched onshore flow and precipitation, and resolution will hinge on the official daily maximum reported by Chicago-area observing stations.
基於Polymarket數據的AI實驗性摘要。這不是交易建議，也不影響該市場的結算方式。 · 更新於
警惕外部連結哦。
警惕外部連結哦。
Frequently Asked Questions