Current forecast models from Environment Canada and other agencies indicate overnight lows in Toronto on September 6 around 12–17°C under clearing skies and light winds, supporting the market's emphasis on 15–16°C outcomes. Early September climatology shows an average daily minimum near 15.5°C, with radiative cooling enhanced by low humidity and minimal cloud cover overnight. Recent high-pressure dominance and easterly flow have limited daytime heating while allowing moderate nocturnal temperature drops, aligning trader consensus with these ranges over colder or warmer extremes. Updated model runs and official briefings through the evening will refine exact minimum readings at Pearson Airport or downtown stations, where resolution thresholds are typically measured.
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 6?
11°C 75.5%
10°C or below 63.3%
15°C 46%
13°C 4.0%
$858 Vol.
$858 Vol.
10°C or below
63%
11°C
76%
12°C
2%
13°C
4%
14°C
4%
15°C
46%
16°C
66%
17°C
<1%
18°C
<1%
19°C
<1%
20°C or higher
<1%
11°C 75.5%
10°C or below 63.3%
15°C 46%
13°C 4.0%
$858 Vol.
$858 Vol.
10°C or below
63%
11°C
76%
12°C
2%
13°C
4%
14°C
4%
15°C
46%
16°C
66%
17°C
<1%
18°C
<1%
19°C
<1%
20°C or higher
<1%
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 4, 2026, 8:29 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=cyyzResolver
0x69c47De9D...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.
Resolution Source
https://www.weather.gov/wrh/timeseries?site=cyyzResolver
0x69c47De9D...Current forecast models from Environment Canada and other agencies indicate overnight lows in Toronto on September 6 around 12–17°C under clearing skies and light winds, supporting the market's emphasis on 15–16°C outcomes. Early September climatology shows an average daily minimum near 15.5°C, with radiative cooling enhanced by low humidity and minimal cloud cover overnight. Recent high-pressure dominance and easterly flow have limited daytime heating while allowing moderate nocturnal temperature drops, aligning trader consensus with these ranges over colder or warmer extremes. Updated model runs and official briefings through the evening will refine exact minimum readings at Pearson Airport or downtown stations, where resolution thresholds are typically measured.
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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