**Official Environment Canada forecasts project a high of 25°C for Toronto on September 8, 2026, under mainly sunny conditions that become a mix of sun and cloud by late morning.** This aligns with the market's leading 63.5% implied probability for 25°C, as traders weigh the authoritative outlook against historical September averages near 23.5°C. Early-morning observations around 16°C and light northerly winds support gradual warming toward that peak, with humidex values near 28°C. Model consensus remains stable following the September 7 issuance, though afternoon cloud cover introduces minor uncertainty in the exact maximum. Nearby 24°C and 26°C outcomes capture residual forecast variability as the day unfolds.
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 8?
Highest temperature in Toronto on September 8?
25°C 50%
26°C 24%
24°C 21%
23°C 3%
NEW
$16,281 Vol.
NEW
$16,281 Vol.
Sep 8, 2026
19°C or below
<1%
20°C
<1%
21°C
<1%
22°C
2%
23°C
3%
24°C
21%
25°C
50%
26°C
24%
27°C
<1%
28°C
<1%
29°C or higher
<1%
25°C 50%
26°C 24%
24°C 21%
23°C 3%
NEW
$16,281 Vol.
NEW
$16,281 Vol.
Sep 8, 2026
19°C or below
$311 Vol.
<1%
20°C
$288 Vol.
<1%
21°C
$239 Vol.
<1%
22°C
$1,398 Vol.
2%
23°C
$1,796 Vol.
3%
24°C
$5,962 Vol.
21%
25°C
$3,233 Vol.
50%
26°C
$2,411 Vol.
24%
27°C
$256 Vol.
<1%
28°C
$216 Vol.
<1%
29°C or higher
$171 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 8 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 Environment Canada forecasts project a high of 25°C for Toronto on September 8, 2026, under mainly sunny conditions that become a mix of sun and cloud by late morning.** This aligns with the market's leading 63.5% implied probability for 25°C, as traders weigh the authoritative outlook against historical September averages near 23.5°C. Early-morning observations around 16°C and light northerly winds support gradual warming toward that peak, with humidex values near 28°C. Model consensus remains stable following the September 7 issuance, though afternoon cloud cover introduces minor uncertainty in the exact maximum. Nearby 24°C and 26°C outcomes capture residual forecast variability as the day unfolds.
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 8 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 6, 2026, 8:55 AM ET
Volume
$16,281End Date
Sep 8, 2026Market Opened
Sep 6, 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 8 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 Environment Canada forecasts project a high of 25°C for Toronto on September 8, 2026, under mainly sunny conditions that become a mix of sun and cloud by late morning.** This aligns with the market's leading 63.5% implied probability for 25°C, as traders weigh the authoritative outlook against historical September averages near 23.5°C. Early-morning observations around 16°C and light northerly winds support gradual warming toward that peak, with humidex values near 28°C. Model consensus remains stable following the September 7 issuance, though afternoon cloud cover introduces minor uncertainty in the exact maximum. Nearby 24°C and 26°C outcomes capture residual forecast variability as the day unfolds.
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 8 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
$16,281End Date
Sep 8, 2026Market Opened
Sep 6, 2026, 8:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=cyyzResolver
0x69c47De9D...**Official Environment Canada forecasts project a high of 25°C for Toronto on September 8, 2026, under mainly sunny conditions that become a mix of sun and cloud by late morning.** This aligns with the market's leading 63.5% implied probability for 25°C, as traders weigh the authoritative outlook against historical September averages near 23.5°C. Early-morning observations around 16°C and light northerly winds support gradual warming toward that peak, with humidex values near 28°C. Model consensus remains stable following the September 7 issuance, though afternoon cloud cover introduces minor uncertainty in the exact maximum. Nearby 24°C and 26°C outcomes capture residual forecast variability as the day unfolds.
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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