Official forecasts from Environment Canada project a high of 18°C for Toronto on September 22 under a mix of sun and cloud with persistent northeast winds gusting to 40 km/h. These conditions advect cooler maritime air while limiting surface heating, keeping daytime maxima near or slightly below late-September climatological norms of roughly 20°C. Model consensus and recent observations align on limited diurnal warming, positioning 17–18°C as the most probable outcomes and explaining the market-implied probabilities favoring those thresholds over warmer or cooler alternatives. Updated model runs and any shifts in wind or cloud cover before resolution will be the key variables for traders to monitor.
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 22?
Highest temperature in Toronto on September 22?
17°C 60%
18°C 31%
16°C 8%
19°C 4%
NEW
NEW
Sep 22, 2026
11°C or below
<1%
12°C
<1%
13°C
<1%
14°C
<1%
15°C
1%
16°C
8%
17°C
60%
18°C
31%
19°C
4%
20°C
1%
21°C or higher
<1%
17°C 60%
18°C 31%
16°C 8%
19°C 4%
NEW
NEW
Sep 22, 2026
11°C or below
$495 Vol.
<1%
12°C
$135 Vol.
<1%
13°C
$160 Vol.
<1%
14°C
$267 Vol.
<1%
15°C
$462 Vol.
1%
16°C
$1,177 Vol.
8%
17°C
$1,969 Vol.
60%
18°C
$1,513 Vol.
31%
19°C
$714 Vol.
4%
20°C
$313 Vol.
1%
21°C or higher
$299 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 22 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.Official forecasts from Environment Canada project a high of 18°C for Toronto on September 22 under a mix of sun and cloud with persistent northeast winds gusting to 40 km/h. These conditions advect cooler maritime air while limiting surface heating, keeping daytime maxima near or slightly below late-September climatological norms of roughly 20°C. Model consensus and recent observations align on limited diurnal warming, positioning 17–18°C as the most probable outcomes and explaining the market-implied probabilities favoring those thresholds over warmer or cooler alternatives. Updated model runs and any shifts in wind or cloud cover before resolution will be the key variables for traders to monitor.
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 22 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 20, 2026, 8:55 AM ET
Volume
$7,468End Date
Sep 22, 2026Market Opened
Sep 20, 2026, 8:55 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 22 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.Official forecasts from Environment Canada project a high of 18°C for Toronto on September 22 under a mix of sun and cloud with persistent northeast winds gusting to 40 km/h. These conditions advect cooler maritime air while limiting surface heating, keeping daytime maxima near or slightly below late-September climatological norms of roughly 20°C. Model consensus and recent observations align on limited diurnal warming, positioning 17–18°C as the most probable outcomes and explaining the market-implied probabilities favoring those thresholds over warmer or cooler alternatives. Updated model runs and any shifts in wind or cloud cover before resolution will be the key variables for traders to monitor.
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 22 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
$7,468End Date
Sep 22, 2026Market Opened
Sep 20, 2026, 8:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=cyyzResolver
0x69c47de9d...Official forecasts from Environment Canada project a high of 18°C for Toronto on September 22 under a mix of sun and cloud with persistent northeast winds gusting to 40 km/h. These conditions advect cooler maritime air while limiting surface heating, keeping daytime maxima near or slightly below late-September climatological norms of roughly 20°C. Model consensus and recent observations align on limited diurnal warming, positioning 17–18°C as the most probable outcomes and explaining the market-implied probabilities favoring those thresholds over warmer or cooler alternatives. Updated model runs and any shifts in wind or cloud cover before resolution will be the key variables for traders to monitor.
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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