Current forecasts from Environment Canada and other models indicate Toronto’s overnight low on September 22 will likely fall in the 8–10°C range under clear to partly cloudy skies, light northeast winds, and a stable high-pressure system promoting radiational cooling. This setup favors moderate overnight temperature drops typical for late September, with minimal advection of warmer or colder air masses. Trader sentiment remains closely divided between sub-2°C and 12°C+ outcomes because small variations in cloud cover, wind mixing, or exact timing of the minimum can shift the recorded low by several degrees, while historical September minima rarely dip below 5°C without stronger cold-air intrusions. Updated model runs and official observations will resolve the market.
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 22?
Lowest temperature in Toronto on September 22?
2°C or below 86%
12°C or higher 85%
9°C 38%
5°C 22%
NEW
NEW
Sep 22, 2026
2°C or below
86%
3°C
18%
4°C
18%
5°C
22%
6°C
22%
7°C
22%
8°C
22%
9°C
22%
10°C
21%
11°C
10%
12°C or higher
85%
2°C or below 86%
12°C or higher 85%
9°C 38%
5°C 22%
NEW
NEW
Sep 22, 2026
2°C or below
$10 Vol.
86%
3°C
$10 Vol.
18%
4°C
$10 Vol.
18%
5°C
$10 Vol.
22%
6°C
$0 Vol.
22%
7°C
$0 Vol.
22%
8°C
$0 Vol.
22%
9°C
$5 Vol.
22%
10°C
$0 Vol.
21%
11°C
$0 Vol.
10%
12°C or higher
$10 Vol.
85%
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 22 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 other models indicate Toronto’s overnight low on September 22 will likely fall in the 8–10°C range under clear to partly cloudy skies, light northeast winds, and a stable high-pressure system promoting radiational cooling. This setup favors moderate overnight temperature drops typical for late September, with minimal advection of warmer or colder air masses. Trader sentiment remains closely divided between sub-2°C and 12°C+ outcomes because small variations in cloud cover, wind mixing, or exact timing of the minimum can shift the recorded low by several degrees, while historical September minima rarely dip below 5°C without stronger cold-air intrusions. Updated model runs and official observations will resolve the market.
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 22 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 20, 2026, 8:29 AM ET
Volume
$55End Date
Sep 22, 2026Market Opened
Sep 20, 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 22 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 other models indicate Toronto’s overnight low on September 22 will likely fall in the 8–10°C range under clear to partly cloudy skies, light northeast winds, and a stable high-pressure system promoting radiational cooling. This setup favors moderate overnight temperature drops typical for late September, with minimal advection of warmer or colder air masses. Trader sentiment remains closely divided between sub-2°C and 12°C+ outcomes because small variations in cloud cover, wind mixing, or exact timing of the minimum can shift the recorded low by several degrees, while historical September minima rarely dip below 5°C without stronger cold-air intrusions. Updated model runs and official observations will resolve the market.
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 22 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
$55End Date
Sep 22, 2026Market Opened
Sep 20, 2026, 8:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=cyyzResolver
0x69c47De9D...Current forecasts from Environment Canada and other models indicate Toronto’s overnight low on September 22 will likely fall in the 8–10°C range under clear to partly cloudy skies, light northeast winds, and a stable high-pressure system promoting radiational cooling. This setup favors moderate overnight temperature drops typical for late September, with minimal advection of warmer or colder air masses. Trader sentiment remains closely divided between sub-2°C and 12°C+ outcomes because small variations in cloud cover, wind mixing, or exact timing of the minimum can shift the recorded low by several degrees, while historical September minima rarely dip below 5°C without stronger cold-air intrusions. Updated model runs and official observations will resolve the market.
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