**Current forecasts from Environment and Climate Change Canada point to a nighttime low near 19°C in Toronto on August 30, keeping the market-implied probabilities tightly clustered around 18–20°C.** Persistent cloud cover, scattered showers, and a humid southwest flow are limiting overnight radiative cooling and preventing temperatures from dropping toward the seasonal average low of roughly 16°C. Model consensus shows minimal diurnal range under these conditions, with dew points remaining elevated and winds light after sunset. Traders appear to be weighting official guidance heavily while accounting for typical forecast uncertainty ranges of ±1–2°C. Updated ECCC model runs or surface observations overnight will be the next key inputs likely to shift positioning.
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 August 30?
Lowest temperature in Toronto on August 30?
19°C 35%
20°C 31%
18°C 27%
16°C 26%
NEW
NEW
Aug 30, 2026
14°C or below
13%
15°C
14%
16°C
26%
17°C
24%
18°C
27%
19°C
35%
20°C
31%
21°C
6%
22°C
5%
23°C
8%
24°C or higher
16%
19°C 35%
20°C 31%
18°C 27%
16°C 26%
NEW
NEW
Aug 30, 2026
14°C or below
$58 Vol.
13%
15°C
$134 Vol.
14%
16°C
$6 Vol.
26%
17°C
$0 Vol.
24%
18°C
$0 Vol.
27%
19°C
$0 Vol.
35%
20°C
$0 Vol.
31%
21°C
$0 Vol.
6%
22°C
$0 Vol.
5%
23°C
$20 Vol.
8%
24°C or higher
$10 Vol.
16%
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 30 Aug '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.
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.**Current forecasts from Environment and Climate Change Canada point to a nighttime low near 19°C in Toronto on August 30, keeping the market-implied probabilities tightly clustered around 18–20°C.** Persistent cloud cover, scattered showers, and a humid southwest flow are limiting overnight radiative cooling and preventing temperatures from dropping toward the seasonal average low of roughly 16°C. Model consensus shows minimal diurnal range under these conditions, with dew points remaining elevated and winds light after sunset. Traders appear to be weighting official guidance heavily while accounting for typical forecast uncertainty ranges of ±1–2°C. Updated ECCC model runs or surface observations overnight will be the next key inputs likely to shift positioning.
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 30 Aug '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.
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.
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 28, 2026, 2:29 PM ET
Volume
$228End Date
Aug 30, 2026Market Opened
Aug 28, 2026, 2:29 PM 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 30 Aug '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.
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.**Current forecasts from Environment and Climate Change Canada point to a nighttime low near 19°C in Toronto on August 30, keeping the market-implied probabilities tightly clustered around 18–20°C.** Persistent cloud cover, scattered showers, and a humid southwest flow are limiting overnight radiative cooling and preventing temperatures from dropping toward the seasonal average low of roughly 16°C. Model consensus shows minimal diurnal range under these conditions, with dew points remaining elevated and winds light after sunset. Traders appear to be weighting official guidance heavily while accounting for typical forecast uncertainty ranges of ±1–2°C. Updated ECCC model runs or surface observations overnight will be the next key inputs likely to shift positioning.
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 30 Aug '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.
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.
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
$228End Date
Aug 30, 2026Market Opened
Aug 28, 2026, 2:29 PM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=cyyzResolver
0x69c47De9D...**Current forecasts from Environment and Climate Change Canada point to a nighttime low near 19°C in Toronto on August 30, keeping the market-implied probabilities tightly clustered around 18–20°C.** Persistent cloud cover, scattered showers, and a humid southwest flow are limiting overnight radiative cooling and preventing temperatures from dropping toward the seasonal average low of roughly 16°C. Model consensus shows minimal diurnal range under these conditions, with dew points remaining elevated and winds light after sunset. Traders appear to be weighting official guidance heavily while accounting for typical forecast uncertainty ranges of ±1–2°C. Updated ECCC model runs or surface observations overnight will be the next key inputs likely to shift positioning.
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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