Recent forecasts from Environment Canada and other models indicate showers and thunderstorms for Toronto on September 9, with daytime highs near 24°C and overnight lows projected around 15–19°C amid increased humidity and southwesterly winds. This setup creates uncertainty in the minimum temperature, as persistent cloud cover and rainfall timing can moderate radiative cooling and elevate lows above the seasonal average of 13.8°C, while clearer intervals could allow dips toward or below 14°C. Trader sentiment remains closely split between colder and warmer outcomes because ensemble models show variability in storm progression and boundary-layer moisture, with resolution hinging on updated guidance expected from the next model cycles. Historical analogs from similar early-September systems suggest the actual low will likely fall in the mid-teens, but shifts in forecast details could quickly adjust market-implied odds.
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 9?
Lowest temperature in Toronto on September 9?
24°C or higher 83%
14°C or below 82%
22°C 49%
16°C 48%
NEW
NEW
Sep 9, 2026
14°C or below
82%
15°C
47%
16°C
48%
17°C
47%
18°C
26%
19°C
36%
20°C
27%
21°C
26%
22°C
49%
23°C
20%
24°C or higher
83%
24°C or higher 83%
14°C or below 82%
22°C 49%
16°C 48%
NEW
NEW
Sep 9, 2026
14°C or below
$0 Vol.
82%
15°C
$0 Vol.
47%
16°C
$0 Vol.
48%
17°C
$0 Vol.
47%
18°C
$0 Vol.
26%
19°C
$0 Vol.
36%
20°C
$0 Vol.
27%
21°C
$0 Vol.
26%
22°C
$0 Vol.
49%
23°C
$0 Vol.
20%
24°C or higher
$0 Vol.
83%
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 9 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.Recent forecasts from Environment Canada and other models indicate showers and thunderstorms for Toronto on September 9, with daytime highs near 24°C and overnight lows projected around 15–19°C amid increased humidity and southwesterly winds. This setup creates uncertainty in the minimum temperature, as persistent cloud cover and rainfall timing can moderate radiative cooling and elevate lows above the seasonal average of 13.8°C, while clearer intervals could allow dips toward or below 14°C. Trader sentiment remains closely split between colder and warmer outcomes because ensemble models show variability in storm progression and boundary-layer moisture, with resolution hinging on updated guidance expected from the next model cycles. Historical analogs from similar early-September systems suggest the actual low will likely fall in the mid-teens, but shifts in forecast details could quickly adjust market-implied odds.
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 9 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 7, 2026, 8:29 AM ET
Volume
$0End Date
Sep 9, 2026Market Opened
Sep 7, 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 9 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.Recent forecasts from Environment Canada and other models indicate showers and thunderstorms for Toronto on September 9, with daytime highs near 24°C and overnight lows projected around 15–19°C amid increased humidity and southwesterly winds. This setup creates uncertainty in the minimum temperature, as persistent cloud cover and rainfall timing can moderate radiative cooling and elevate lows above the seasonal average of 13.8°C, while clearer intervals could allow dips toward or below 14°C. Trader sentiment remains closely split between colder and warmer outcomes because ensemble models show variability in storm progression and boundary-layer moisture, with resolution hinging on updated guidance expected from the next model cycles. Historical analogs from similar early-September systems suggest the actual low will likely fall in the mid-teens, but shifts in forecast details could quickly adjust market-implied odds.
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 9 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
$0End Date
Sep 9, 2026Market Opened
Sep 7, 2026, 8:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=cyyzResolver
0x69c47De9D...Recent forecasts from Environment Canada and other models indicate showers and thunderstorms for Toronto on September 9, with daytime highs near 24°C and overnight lows projected around 15–19°C amid increased humidity and southwesterly winds. This setup creates uncertainty in the minimum temperature, as persistent cloud cover and rainfall timing can moderate radiative cooling and elevate lows above the seasonal average of 13.8°C, while clearer intervals could allow dips toward or below 14°C. Trader sentiment remains closely split between colder and warmer outcomes because ensemble models show variability in storm progression and boundary-layer moisture, with resolution hinging on updated guidance expected from the next model cycles. Historical analogs from similar early-September systems suggest the actual low will likely fall in the mid-teens, but shifts in forecast details could quickly adjust market-implied odds.
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