Current forecasts from Environment Canada and supporting models indicate clear skies and light easterly flow over Toronto through September 24, supporting a minimum near 6–11 °C at Pearson Airport, with downtown readings potentially 1–2 °C higher due to the urban heat island. Recent model runs show limited spread in overnight radiative cooling under dry, stable conditions, keeping the 5 °C threshold and milder outcomes nearly balanced in trader pricing. Key variables include precise boundary-layer moisture and wind speed at 2 m, which can shift the low by several degrees; updated runs from the Global Forecast System and regional ensembles expected before resolution will clarify whether the minimum settles near 6 °C or remains several degrees warmer.
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 24?
Lowest temperature in Toronto on September 24?
5°C or below 97%
15°C or higher 97%
6°C 39%
10°C 21%
NEW
NEW
Sep 24, 2026
5°C or below
97%
6°C
39%
7°C
20%
8°C
20%
9°C
20%
10°C
21%
11°C
21%
12°C
20%
13°C
20%
14°C
20%
15°C or higher
97%
5°C or below 97%
15°C or higher 97%
6°C 39%
10°C 21%
NEW
NEW
Sep 24, 2026
5°C or below
$10 Vol.
97%
6°C
$10 Vol.
39%
7°C
$0 Vol.
20%
8°C
$0 Vol.
20%
9°C
$0 Vol.
20%
10°C
$0 Vol.
21%
11°C
$0 Vol.
21%
12°C
$0 Vol.
20%
13°C
$0 Vol.
20%
14°C
$0 Vol.
20%
15°C or higher
$10 Vol.
97%
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 24 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 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.Current forecasts from Environment Canada and supporting models indicate clear skies and light easterly flow over Toronto through September 24, supporting a minimum near 6–11 °C at Pearson Airport, with downtown readings potentially 1–2 °C higher due to the urban heat island. Recent model runs show limited spread in overnight radiative cooling under dry, stable conditions, keeping the 5 °C threshold and milder outcomes nearly balanced in trader pricing. Key variables include precise boundary-layer moisture and wind speed at 2 m, which can shift the low by several degrees; updated runs from the Global Forecast System and regional ensembles expected before resolution will clarify whether the minimum settles near 6 °C or remains several degrees warmer.
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 24 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 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 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 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 22, 2026, 8:29 AM ET
Volume
$30End Date
Sep 24, 2026Market Opened
Sep 22, 2026, 8:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=cyyzResolver
0x69c47De9D...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 24 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 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.Current forecasts from Environment Canada and supporting models indicate clear skies and light easterly flow over Toronto through September 24, supporting a minimum near 6–11 °C at Pearson Airport, with downtown readings potentially 1–2 °C higher due to the urban heat island. Recent model runs show limited spread in overnight radiative cooling under dry, stable conditions, keeping the 5 °C threshold and milder outcomes nearly balanced in trader pricing. Key variables include precise boundary-layer moisture and wind speed at 2 m, which can shift the low by several degrees; updated runs from the Global Forecast System and regional ensembles expected before resolution will clarify whether the minimum settles near 6 °C or remains several degrees warmer.
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 24 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 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 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 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
$30End Date
Sep 24, 2026Market Opened
Sep 22, 2026, 8:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=cyyzResolver
0x69c47De9D...Current forecasts from Environment Canada and supporting models indicate clear skies and light easterly flow over Toronto through September 24, supporting a minimum near 6–11 °C at Pearson Airport, with downtown readings potentially 1–2 °C higher due to the urban heat island. Recent model runs show limited spread in overnight radiative cooling under dry, stable conditions, keeping the 5 °C threshold and milder outcomes nearly balanced in trader pricing. Key variables include precise boundary-layer moisture and wind speed at 2 m, which can shift the low by several degrees; updated runs from the Global Forecast System and regional ensembles expected before resolution will clarify whether the minimum settles near 6 °C or remains several degrees warmer.
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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