Official forecasts from Environment Canada project a high of 26°C for Toronto on August 31 amid a mix of sun and cloud with a 40% chance of showers, while other models indicate 21–23°C under more persistent overcast and rain. These conditions introduce uncertainty in peak readings, as thicker cloud cover and precipitation timing can suppress maximum temperatures below seasonal norms of 24–25°C. Trader consensus clusters tightly on 22–24°C outcomes because recent model runs show modest variability in steering patterns and humidity, with historical August 31 highs averaging 24.6°C but recent cool, unsettled weather favoring lower peaks. Updated regional forecasts and observational data ahead of resolution will likely refine these probabilities.
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 August 31?
Highest temperature in Toronto on August 31?
23°C 32%
22°C 25%
24°C 22%
21°C 10%
NEW
NEW
Aug 31, 2026
17°C or below
<1%
18°C
<1%
19°C
4%
20°C
7%
21°C
10%
22°C
25%
23°C
32%
24°C
22%
25°C
6%
26°C
6%
27°C or higher
4%
23°C 32%
22°C 25%
24°C 22%
21°C 10%
NEW
NEW
Aug 31, 2026
17°C or below
$0 Vol.
<1%
18°C
$0 Vol.
<1%
19°C
$0 Vol.
4%
20°C
$0 Vol.
7%
21°C
$0 Vol.
10%
22°C
$0 Vol.
25%
23°C
$0 Vol.
32%
24°C
$54 Vol.
22%
25°C
$18 Vol.
6%
26°C
$0 Vol.
6%
27°C or higher
$0 Vol.
4%
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 31 Aug '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.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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 26°C for Toronto on August 31 amid a mix of sun and cloud with a 40% chance of showers, while other models indicate 21–23°C under more persistent overcast and rain. These conditions introduce uncertainty in peak readings, as thicker cloud cover and precipitation timing can suppress maximum temperatures below seasonal norms of 24–25°C. Trader consensus clusters tightly on 22–24°C outcomes because recent model runs show modest variability in steering patterns and humidity, with historical August 31 highs averaging 24.6°C but recent cool, unsettled weather favoring lower peaks. Updated regional forecasts and observational data ahead of resolution will likely refine these probabilities.
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 31 Aug '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.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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: Aug 29, 2026, 8:55 AM ET
Volume
$72End Date
Aug 31, 2026Market Opened
Aug 29, 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 31 Aug '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.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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 26°C for Toronto on August 31 amid a mix of sun and cloud with a 40% chance of showers, while other models indicate 21–23°C under more persistent overcast and rain. These conditions introduce uncertainty in peak readings, as thicker cloud cover and precipitation timing can suppress maximum temperatures below seasonal norms of 24–25°C. Trader consensus clusters tightly on 22–24°C outcomes because recent model runs show modest variability in steering patterns and humidity, with historical August 31 highs averaging 24.6°C but recent cool, unsettled weather favoring lower peaks. Updated regional forecasts and observational data ahead of resolution will likely refine these probabilities.
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 31 Aug '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.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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
$72End Date
Aug 31, 2026Market Opened
Aug 29, 2026, 8:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=cyyzResolver
0x69c47De9D...Official forecasts from Environment Canada project a high of 26°C for Toronto on August 31 amid a mix of sun and cloud with a 40% chance of showers, while other models indicate 21–23°C under more persistent overcast and rain. These conditions introduce uncertainty in peak readings, as thicker cloud cover and precipitation timing can suppress maximum temperatures below seasonal norms of 24–25°C. Trader consensus clusters tightly on 22–24°C outcomes because recent model runs show modest variability in steering patterns and humidity, with historical August 31 highs averaging 24.6°C but recent cool, unsettled weather favoring lower peaks. Updated regional forecasts and observational data ahead of resolution will likely refine these probabilities.
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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