**Official National Weather Service forecasts for Chicago on September 18, 2026, center on a high of 72°F under mostly cloudy skies with easterly flow.** This aligns closely with the market’s leading 72–73°F bin at 43% implied probability, followed by 74–75°F (24.5%) and 70–71°F (24%). Key drivers include a stable post-frontal air mass with limited daytime heating from persistent cloud cover and light northeast-to-east winds of 5–10 mph. Model consensus from recent runs shows minimal warm advection or clearing that would push temperatures higher, while the risk of light showers or drizzle further caps the maximum. Historical September averages near 75°F provide context, but the current pattern favors readings at or slightly below that baseline. Recent developments reinforce this positioning: no significant forecast shifts occurred in the last 24–48 hours, and upstream observations confirm cooler, moister air dominating the Midwest. Traders appear to be anchoring heavily on the NWS point forecast and ensemble guidance, with the tight clustering around 70–75°F reflecting modest uncertainty tied to exact cloud timing and any brief sun breaks. Upcoming model updates or morning observations could refine the precise maximum before resolution.
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18日芝加哥的最高溫度？
9月18日芝加哥的最高溫度？
72-73°F 46%
74-75°F 25%
70-71°F 24%
68-69°F 6%
最新
最新
2026-09-18
63°F或以下
<1%
64-65°F
<1%
66-67°F
<1%
68-69°F
6%
70-71°F
24%
72-73°F
46%
74-75°F
25%
76-77°F
5%
78-79°F
2%
80-81°F
<1%
82°F或以上
<1%
72-73°F 46%
74-75°F 25%
70-71°F 24%
68-69°F 6%
最新
最新
2026-09-18
63°F或以下
$263 交易量
<1%
64-65°F
$270 交易量
<1%
66-67°F
$103 交易量
<1%
68-69°F
$2,412 交易量
6%
70-71°F
$2,396 交易量
24%
72-73°F
$666 交易量
46%
74-75°F
$650 交易量
25%
76-77°F
$375 交易量
5%
78-79°F
$195 交易量
2%
80-81°F
$225 交易量
<1%
82°F或以上
$241 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 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.**Official National Weather Service forecasts for Chicago on September 18, 2026, center on a high of 72°F under mostly cloudy skies with easterly flow.** This aligns closely with the market’s leading 72–73°F bin at 43% implied probability, followed by 74–75°F (24.5%) and 70–71°F (24%).
Key drivers include a stable post-frontal air mass with limited daytime heating from persistent cloud cover and light northeast-to-east winds of 5–10 mph. Model consensus from recent runs shows minimal warm advection or clearing that would push temperatures higher, while the risk of light showers or drizzle further caps the maximum. Historical September averages near 75°F provide context, but the current pattern favors readings at or slightly below that baseline.
Recent developments reinforce this positioning: no significant forecast shifts occurred in the last 24–48 hours, and upstream observations confirm cooler, moister air dominating the Midwest. Traders appear to be anchoring heavily on the NWS point forecast and ensemble guidance, with the tight clustering around 70–75°F reflecting modest uncertainty tied to exact cloud timing and any brief sun breaks. Upcoming model updates or morning observations could refine the precise maximum before resolution.
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.
市場開放時間： Sep 16, 2026, 3:56 AM ET
交易量
$7,796結束日期
2026-09-18市場開放時間
Sep 16, 2026, 3:56 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 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.**Official National Weather Service forecasts for Chicago on September 18, 2026, center on a high of 72°F under mostly cloudy skies with easterly flow.** This aligns closely with the market’s leading 72–73°F bin at 43% implied probability, followed by 74–75°F (24.5%) and 70–71°F (24%).
Key drivers include a stable post-frontal air mass with limited daytime heating from persistent cloud cover and light northeast-to-east winds of 5–10 mph. Model consensus from recent runs shows minimal warm advection or clearing that would push temperatures higher, while the risk of light showers or drizzle further caps the maximum. Historical September averages near 75°F provide context, but the current pattern favors readings at or slightly below that baseline.
Recent developments reinforce this positioning: no significant forecast shifts occurred in the last 24–48 hours, and upstream observations confirm cooler, moister air dominating the Midwest. Traders appear to be anchoring heavily on the NWS point forecast and ensemble guidance, with the tight clustering around 70–75°F reflecting modest uncertainty tied to exact cloud timing and any brief sun breaks. Upcoming model updates or morning observations could refine the precise maximum before resolution.
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.
交易量
$7,796結束日期
2026-09-18市場開放時間
Sep 16, 2026, 3:56 AM ET**Official National Weather Service forecasts for Chicago on September 18, 2026, center on a high of 72°F under mostly cloudy skies with easterly flow.** This aligns closely with the market’s leading 72–73°F bin at 43% implied probability, followed by 74–75°F (24.5%) and 70–71°F (24%). Key drivers include a stable post-frontal air mass with limited daytime heating from persistent cloud cover and light northeast-to-east winds of 5–10 mph. Model consensus from recent runs shows minimal warm advection or clearing that would push temperatures higher, while the risk of light showers or drizzle further caps the maximum. Historical September averages near 75°F provide context, but the current pattern favors readings at or slightly below that baseline. Recent developments reinforce this positioning: no significant forecast shifts occurred in the last 24–48 hours, and upstream observations confirm cooler, moister air dominating the Midwest. Traders appear to be anchoring heavily on the NWS point forecast and ensemble guidance, with the tight clustering around 70–75°F reflecting modest uncertainty tied to exact cloud timing and any brief sun breaks. Upcoming model updates or morning observations could refine the precise maximum before resolution.
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