Recent official forecasts from Environment Canada project a high of 20°C for Toronto on September 24 under sunny conditions with light easterly flow, yet market-implied odds favor 19°C or 18°C due to model consensus showing modest cooling from persistent northeast winds and dry air advection. Stable high-pressure ridging has suppressed daytime heating in recent days, with observed highs near 17–18°C, aligning with climatological norms around 20°C but tempered by the absence of strong southerly flow. Upcoming model runs and Environment Canada updates will refine boundary-layer mixing and exact peak timing, sustaining tight clustering around 18–20°C while limiting upside risk from warmer scenarios.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Toronto on September 24?
Highest temperature in Toronto on September 24?
19°C 54%
18°C 27%
20°C 16%
16°C 6%
NEW
NEW
Sep 24, 2026
14°C or below
2%
15°C
5%
16°C
6%
17°C
6%
18°C
27%
19°C
54%
20°C
16%
21°C
4%
22°C
5%
23°C
4%
24°C or higher
<1%
19°C 54%
18°C 27%
20°C 16%
16°C 6%
NEW
NEW
Sep 24, 2026
14°C or below
$268 Vol.
2%
15°C
$10 Vol.
5%
16°C
$17 Vol.
6%
17°C
$59 Vol.
6%
18°C
$0 Vol.
27%
19°C
$85 Vol.
54%
20°C
$84 Vol.
16%
21°C
$59 Vol.
4%
22°C
$10 Vol.
5%
23°C
$10 Vol.
4%
24°C or higher
$95 Vol.
<1%
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Toronto Pearson Intl Airport Station in degrees Celsius on 24 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=cyyz
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 Metric Units" button until the relevant table displays °C.
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 Celsius (eg, 9°C). 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 official forecasts from Environment Canada project a high of 20°C for Toronto on September 24 under sunny conditions with light easterly flow, yet market-implied odds favor 19°C or 18°C due to model consensus showing modest cooling from persistent northeast winds and dry air advection. Stable high-pressure ridging has suppressed daytime heating in recent days, with observed highs near 17–18°C, aligning with climatological norms around 20°C but tempered by the absence of strong southerly flow. Upcoming model runs and Environment Canada updates will refine boundary-layer mixing and exact peak timing, sustaining tight clustering around 18–20°C while limiting upside risk from warmer scenarios.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Toronto Pearson Intl Airport Station in degrees Celsius on 24 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=cyyz
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 Metric Units" button until the relevant table displays °C.
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 Celsius (eg, 9°C). 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=cyyz
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 Metric Units" button until the relevant table displays °C.
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 Celsius (eg, 9°C). 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: Sep 22, 2026, 8:56 AM ET
Volume
$447End Date
Sep 24, 2026Market Opened
Sep 22, 2026, 8:56 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=cyyzResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Toronto Pearson Intl Airport Station in degrees Celsius on 24 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=cyyz
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 Metric Units" button until the relevant table displays °C.
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 Celsius (eg, 9°C). 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 official forecasts from Environment Canada project a high of 20°C for Toronto on September 24 under sunny conditions with light easterly flow, yet market-implied odds favor 19°C or 18°C due to model consensus showing modest cooling from persistent northeast winds and dry air advection. Stable high-pressure ridging has suppressed daytime heating in recent days, with observed highs near 17–18°C, aligning with climatological norms around 20°C but tempered by the absence of strong southerly flow. Upcoming model runs and Environment Canada updates will refine boundary-layer mixing and exact peak timing, sustaining tight clustering around 18–20°C while limiting upside risk from warmer scenarios.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Toronto Pearson Intl Airport Station in degrees Celsius on 24 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=cyyz
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 Metric Units" button until the relevant table displays °C.
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 Celsius (eg, 9°C). 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=cyyz
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 Metric Units" button until the relevant table displays °C.
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 Celsius (eg, 9°C). 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
$447End Date
Sep 24, 2026Market Opened
Sep 22, 2026, 8:56 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=cyyzResolver
0x69c47De9D...Recent official forecasts from Environment Canada project a high of 20°C for Toronto on September 24 under sunny conditions with light easterly flow, yet market-implied odds favor 19°C or 18°C due to model consensus showing modest cooling from persistent northeast winds and dry air advection. Stable high-pressure ridging has suppressed daytime heating in recent days, with observed highs near 17–18°C, aligning with climatological norms around 20°C but tempered by the absence of strong southerly flow. Upcoming model runs and Environment Canada updates will refine boundary-layer mixing and exact peak timing, sustaining tight clustering around 18–20°C while limiting upside risk from warmer scenarios.
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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