Current forecast consensus from Environment Canada and global models places Toronto’s August 27 maximum near 25–26 °C, with partly cloudy skies, southwesterly winds, and a 20–40 % chance of showers or thunderstorms that could cap afternoon heating through reduced insolation and evaporative cooling. Recent days have featured similar conditions, with highs of 24–26 °C amid variable cloud and humidity near 70–80 %, keeping the surface warm but not allowing strong boundary-layer mixing. Minor model differences in cloud timing, frontal passage, and dew-point advection create the tight spread between 25 °C and 26 °C outcomes, while a 27 °C peak would require earlier clearing and stronger southerly flow than currently indicated. Traders are weighting these near-term variables heavily given the short forecast horizon.
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 27?
Highest temperature in Toronto on August 27?
25°C 35%
26°C 35%
27°C 22%
23°C 11%
NEW
NEW
Aug 27, 2026
21°C or below
4%
22°C
4%
23°C
11%
24°C
9%
25°C
35%
26°C
35%
27°C
22%
28°C
5%
29°C
6%
30°C
2%
31°C or higher
4%
25°C 35%
26°C 35%
27°C 22%
23°C 11%
NEW
NEW
Aug 27, 2026
21°C or below
$11 Vol.
4%
22°C
$0 Vol.
4%
23°C
$0 Vol.
11%
24°C
$1 Vol.
9%
25°C
$2 Vol.
35%
26°C
$15 Vol.
35%
27°C
$0 Vol.
22%
28°C
$0 Vol.
5%
29°C
$26 Vol.
6%
30°C
$0 Vol.
2%
31°C or higher
$5 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 27 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 is unavailable or missing for the observation period, Weather Underground will be used as the secondary 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.Current forecast consensus from Environment Canada and global models places Toronto’s August 27 maximum near 25–26 °C, with partly cloudy skies, southwesterly winds, and a 20–40 % chance of showers or thunderstorms that could cap afternoon heating through reduced insolation and evaporative cooling. Recent days have featured similar conditions, with highs of 24–26 °C amid variable cloud and humidity near 70–80 %, keeping the surface warm but not allowing strong boundary-layer mixing. Minor model differences in cloud timing, frontal passage, and dew-point advection create the tight spread between 25 °C and 26 °C outcomes, while a 27 °C peak would require earlier clearing and stronger southerly flow than currently indicated. Traders are weighting these near-term variables heavily given the short forecast horizon.
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 27 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 is unavailable or missing for the observation period, Weather Underground will be used as the secondary 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 is unavailable or missing for the observation period, Weather Underground will be used as the secondary 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 25, 2026, 8:56 PM ET
Volume
$60End Date
Aug 27, 2026Market Opened
Aug 25, 2026, 8:56 PM 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 27 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 is unavailable or missing for the observation period, Weather Underground will be used as the secondary 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.Current forecast consensus from Environment Canada and global models places Toronto’s August 27 maximum near 25–26 °C, with partly cloudy skies, southwesterly winds, and a 20–40 % chance of showers or thunderstorms that could cap afternoon heating through reduced insolation and evaporative cooling. Recent days have featured similar conditions, with highs of 24–26 °C amid variable cloud and humidity near 70–80 %, keeping the surface warm but not allowing strong boundary-layer mixing. Minor model differences in cloud timing, frontal passage, and dew-point advection create the tight spread between 25 °C and 26 °C outcomes, while a 27 °C peak would require earlier clearing and stronger southerly flow than currently indicated. Traders are weighting these near-term variables heavily given the short forecast horizon.
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 27 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 is unavailable or missing for the observation period, Weather Underground will be used as the secondary 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 is unavailable or missing for the observation period, Weather Underground will be used as the secondary 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
$60End Date
Aug 27, 2026Market Opened
Aug 25, 2026, 8:56 PM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=cyyzResolver
0x69c47De9D...Current forecast consensus from Environment Canada and global models places Toronto’s August 27 maximum near 25–26 °C, with partly cloudy skies, southwesterly winds, and a 20–40 % chance of showers or thunderstorms that could cap afternoon heating through reduced insolation and evaporative cooling. Recent days have featured similar conditions, with highs of 24–26 °C amid variable cloud and humidity near 70–80 %, keeping the surface warm but not allowing strong boundary-layer mixing. Minor model differences in cloud timing, frontal passage, and dew-point advection create the tight spread between 25 °C and 26 °C outcomes, while a 27 °C peak would require earlier clearing and stronger southerly flow than currently indicated. Traders are weighting these near-term variables heavily given the short forecast horizon.
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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