Recent Environment Canada forecasts for Toronto on August 13 project a daytime high near 29°C under partly cloudy skies with a 30% chance of showers, driving the tight market split between 28°C (41.5%) and 27°C (37.0% implied probability). Variable cloud cover and scattered precipitation limit surface heating by reducing incoming solar radiation, while modest winds and humidity levels further moderate peak readings at Pearson Airport or downtown stations. Model consensus shows only minor timing differences in afternoon clearing that could shift the observed maximum by 1°C, consistent with historical late-summer variability when fronts approach the Great Lakes region. Updated guidance later today on shower development remains the key near-term catalyst for any further adjustment in trader positioning.
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 13?
Highest temperature in Toronto on August 13?
28°C 52%
27°C 28%
29°C 13%
26°C 6%
NEW
$13,457 Vol.
NEW
$13,457 Vol.
Aug 13, 2026
21°C or below
<1%
22°C
<1%
23°C
<1%
24°C
<1%
25°C
1%
26°C
6%
27°C
28%
28°C
52%
29°C
13%
30°C
2%
31°C or higher
1%
28°C 52%
27°C 28%
29°C 13%
26°C 6%
NEW
$13,457 Vol.
NEW
$13,457 Vol.
Aug 13, 2026
21°C or below
$1,049 Vol.
<1%
22°C
$405 Vol.
<1%
23°C
$374 Vol.
<1%
24°C
$451 Vol.
<1%
25°C
$661 Vol.
1%
26°C
$1,392 Vol.
6%
27°C
$1,312 Vol.
28%
28°C
$5,324 Vol.
52%
29°C
$1,355 Vol.
13%
30°C
$365 Vol.
2%
31°C or higher
$769 Vol.
1%
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Toronto Pearson Intl Airport Station in degrees Celsius on 13 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Toronto Pearson Intl Airport Station, available here: https://www.wunderground.com/history/daily/ca/mississauga/CYYZ.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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.Recent Environment Canada forecasts for Toronto on August 13 project a daytime high near 29°C under partly cloudy skies with a 30% chance of showers, driving the tight market split between 28°C (41.5%) and 27°C (37.0% implied probability). Variable cloud cover and scattered precipitation limit surface heating by reducing incoming solar radiation, while modest winds and humidity levels further moderate peak readings at Pearson Airport or downtown stations. Model consensus shows only minor timing differences in afternoon clearing that could shift the observed maximum by 1°C, consistent with historical late-summer variability when fronts approach the Great Lakes region. Updated guidance later today on shower development remains the key near-term catalyst for any further adjustment in trader positioning.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Toronto Pearson Intl Airport Station in degrees Celsius on 13 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Toronto Pearson Intl Airport Station, available here: https://www.wunderground.com/history/daily/ca/mississauga/CYYZ.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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.
This market will resolve to the temperature range that contains the highest temperature recorded at the Toronto Pearson Intl Airport Station in degrees Celsius on 13 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Toronto Pearson Intl Airport Station, available here: https://www.wunderground.com/history/daily/ca/mississauga/CYYZ.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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 11, 2026, 9:02 PM ET
Volume
$13,457End Date
Aug 13, 2026Market Opened
Aug 11, 2026, 9:02 PM ETResolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Toronto Pearson Intl Airport Station in degrees Celsius on 13 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Toronto Pearson Intl Airport Station, available here: https://www.wunderground.com/history/daily/ca/mississauga/CYYZ.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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.Recent Environment Canada forecasts for Toronto on August 13 project a daytime high near 29°C under partly cloudy skies with a 30% chance of showers, driving the tight market split between 28°C (41.5%) and 27°C (37.0% implied probability). Variable cloud cover and scattered precipitation limit surface heating by reducing incoming solar radiation, while modest winds and humidity levels further moderate peak readings at Pearson Airport or downtown stations. Model consensus shows only minor timing differences in afternoon clearing that could shift the observed maximum by 1°C, consistent with historical late-summer variability when fronts approach the Great Lakes region. Updated guidance later today on shower development remains the key near-term catalyst for any further adjustment in trader positioning.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Toronto Pearson Intl Airport Station in degrees Celsius on 13 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Toronto Pearson Intl Airport Station, available here: https://www.wunderground.com/history/daily/ca/mississauga/CYYZ.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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.
This market will resolve to the temperature range that contains the highest temperature recorded at the Toronto Pearson Intl Airport Station in degrees Celsius on 13 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Toronto Pearson Intl Airport Station, available here: https://www.wunderground.com/history/daily/ca/mississauga/CYYZ.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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
$13,457End Date
Aug 13, 2026Market Opened
Aug 11, 2026, 9:02 PM ETResolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...Recent Environment Canada forecasts for Toronto on August 13 project a daytime high near 29°C under partly cloudy skies with a 30% chance of showers, driving the tight market split between 28°C (41.5%) and 27°C (37.0% implied probability). Variable cloud cover and scattered precipitation limit surface heating by reducing incoming solar radiation, while modest winds and humidity levels further moderate peak readings at Pearson Airport or downtown stations. Model consensus shows only minor timing differences in afternoon clearing that could shift the observed maximum by 1°C, consistent with historical late-summer variability when fronts approach the Great Lakes region. Updated guidance later today on shower development remains the key near-term catalyst for any further adjustment in trader positioning.
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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