Forecast consensus from Environment Canada and other models points to a highest temperature near 25–26°C for Toronto on August 30, with a mix of sun and cloud, southwesterly flow, and 30–40% chance of showers. Increasing cloud cover and humidity will limit peak heating compared with clearer conditions the prior day, while normal late-August averages hover near 24.8°C. Traders weight 24–26°C most heavily because modest shifts in timing or intensity of afternoon convection or boundary-layer mixing could easily push the official high one degree either way; lower or higher extremes remain unlikely given the stable steering pattern and lack of strong advection. New model runs and the final NWS observation will refine the outcome before market resolution.
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 30?
Highest temperature in Toronto on August 30?
25°C 26%
24°C 24%
26°C 19%
23°C 16%
NEW
NEW
Aug 30, 2026
17°C or below
9%
18°C
9%
19°C
6%
20°C
5%
21°C
5%
22°C
7%
23°C
16%
24°C
24%
25°C
26%
26°C
19%
27°C or higher
6%
25°C 26%
24°C 24%
26°C 19%
23°C 16%
NEW
NEW
Aug 30, 2026
17°C or below
$5 Vol.
9%
18°C
$5 Vol.
9%
19°C
$15 Vol.
6%
20°C
$5 Vol.
5%
21°C
$0 Vol.
5%
22°C
$0 Vol.
7%
23°C
$0 Vol.
16%
24°C
$0 Vol.
24%
25°C
$15 Vol.
26%
26°C
$0 Vol.
19%
27°C or higher
$5 Vol.
6%
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 30 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.Forecast consensus from Environment Canada and other models points to a highest temperature near 25–26°C for Toronto on August 30, with a mix of sun and cloud, southwesterly flow, and 30–40% chance of showers. Increasing cloud cover and humidity will limit peak heating compared with clearer conditions the prior day, while normal late-August averages hover near 24.8°C. Traders weight 24–26°C most heavily because modest shifts in timing or intensity of afternoon convection or boundary-layer mixing could easily push the official high one degree either way; lower or higher extremes remain unlikely given the stable steering pattern and lack of strong advection. New model runs and the final NWS observation will refine the outcome before market resolution.
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 30 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 28, 2026, 2:55 PM ET
Volume
$50End Date
Aug 30, 2026Market Opened
Aug 28, 2026, 2:55 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 30 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.Forecast consensus from Environment Canada and other models points to a highest temperature near 25–26°C for Toronto on August 30, with a mix of sun and cloud, southwesterly flow, and 30–40% chance of showers. Increasing cloud cover and humidity will limit peak heating compared with clearer conditions the prior day, while normal late-August averages hover near 24.8°C. Traders weight 24–26°C most heavily because modest shifts in timing or intensity of afternoon convection or boundary-layer mixing could easily push the official high one degree either way; lower or higher extremes remain unlikely given the stable steering pattern and lack of strong advection. New model runs and the final NWS observation will refine the outcome before market resolution.
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 30 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
$50End Date
Aug 30, 2026Market Opened
Aug 28, 2026, 2:55 PM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=cyyzResolver
0x69c47De9D...Forecast consensus from Environment Canada and other models points to a highest temperature near 25–26°C for Toronto on August 30, with a mix of sun and cloud, southwesterly flow, and 30–40% chance of showers. Increasing cloud cover and humidity will limit peak heating compared with clearer conditions the prior day, while normal late-August averages hover near 24.8°C. Traders weight 24–26°C most heavily because modest shifts in timing or intensity of afternoon convection or boundary-layer mixing could easily push the official high one degree either way; lower or higher extremes remain unlikely given the stable steering pattern and lack of strong advection. New model runs and the final NWS observation will refine the outcome before market resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions