Official temperature records from Environment and Climate Change Canada confirm that Toronto's minimum on September 2 reached exactly 20 °C, aligning with pre-event model consensus and the observed overnight low under mainly cloudy skies with lingering thunderstorm activity. This outcome reflects typical early-September conditions, where average lows hover near 16 °C but recent humidity and cloud cover prevented further radiational cooling. The near-certain market pricing rests on verified station data rather than forecasts. Revisions to the official daily minimum from the primary observing site or discrepancies across multiple urban stations could theoretically alter resolution, though such adjustments remain rare once preliminary values are posted.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Toronto on September 2?
Lowest temperature in Toronto on September 2?
20°C 100.0%
15°C or below <1%
16°C <1%
17°C <1%
$1,798 Vol.
$1,798 Vol.
Sep 2, 2026
15°C or below
No
16°C
No
17°C
No
18°C
No
19°C
No
20°C
Yes
21°C
No
22°C
No
23°C
No
24°C
No
25°C or higher
No
20°C 100.0%
15°C or below <1%
16°C <1%
17°C <1%
$1,798 Vol.
$1,798 Vol.
Sep 2, 2026
15°C or below
$547 Vol.
No
16°C
$39 Vol.
No
17°C
$97 Vol.
No
18°C
$97 Vol.
No
19°C
$87 Vol.
No
20°C
$582 Vol.
Yes
21°C
$159 Vol.
No
22°C
$59 Vol.
No
23°C
$47 Vol.
No
24°C
$52 Vol.
No
25°C or higher
$32 Vol.
No
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Toronto Pearson Intl Airport Station in degrees Celsius on 2 Sep '26.
The resolution source for this market will be information from NOAA, specifically the lowest 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 which 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 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 temperature records from Environment and Climate Change Canada confirm that Toronto's minimum on September 2 reached exactly 20 °C, aligning with pre-event model consensus and the observed overnight low under mainly cloudy skies with lingering thunderstorm activity. This outcome reflects typical early-September conditions, where average lows hover near 16 °C but recent humidity and cloud cover prevented further radiational cooling. The near-certain market pricing rests on verified station data rather than forecasts. Revisions to the official daily minimum from the primary observing site or discrepancies across multiple urban stations could theoretically alter resolution, though such adjustments remain rare once preliminary values are posted.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Toronto Pearson Intl Airport Station in degrees Celsius on 2 Sep '26.
The resolution source for this market will be information from NOAA, specifically the lowest 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 which 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 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 lowest 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 which 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 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 31, 2026, 8:29 AM ET
Volume
$1,798End Date
Sep 2, 2026Market Opened
Aug 31, 2026, 8:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=cyyzResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Toronto Pearson Intl Airport Station in degrees Celsius on 2 Sep '26.
The resolution source for this market will be information from NOAA, specifically the lowest 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 which 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 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 temperature records from Environment and Climate Change Canada confirm that Toronto's minimum on September 2 reached exactly 20 °C, aligning with pre-event model consensus and the observed overnight low under mainly cloudy skies with lingering thunderstorm activity. This outcome reflects typical early-September conditions, where average lows hover near 16 °C but recent humidity and cloud cover prevented further radiational cooling. The near-certain market pricing rests on verified station data rather than forecasts. Revisions to the official daily minimum from the primary observing site or discrepancies across multiple urban stations could theoretically alter resolution, though such adjustments remain rare once preliminary values are posted.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Toronto Pearson Intl Airport Station in degrees Celsius on 2 Sep '26.
The resolution source for this market will be information from NOAA, specifically the lowest 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 which 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 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 lowest 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 which 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 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
$1,798End Date
Sep 2, 2026Market Opened
Aug 31, 2026, 8:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=cyyzResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official temperature records from Environment and Climate Change Canada confirm that Toronto's minimum on September 2 reached exactly 20 °C, aligning with pre-event model consensus and the observed overnight low under mainly cloudy skies with lingering thunderstorm activity. This outcome reflects typical early-September conditions, where average lows hover near 16 °C but recent humidity and cloud cover prevented further radiational cooling. The near-certain market pricing rests on verified station data rather than forecasts. Revisions to the official daily minimum from the primary observing site or discrepancies across multiple urban stations could theoretically alter resolution, though such adjustments remain rare once preliminary values are posted.
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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