Recent forecasts from the Meteorological Service Singapore and international models indicate a daily maximum temperature for September 11 likely near the September climatological average of 31–32°C, driving the close market split between those two outcomes. Persistent southwest monsoon flow, southeasterly winds, and afternoon convective thunderstorms typical of the season introduce modest cooling potential through cloud cover and rainfall, while clear periods could allow brief peaks at or above 32°C. Model agreement remains high on overall conditions but shows sensitivity to the exact timing and intensity of showers, which often cap daytime highs in Singapore. Updated short-range guidance and real-time observations on the day itself will provide the final resolution inputs.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Singapore on September 11?
32°C 45%
31°C 38%
33°C 14%
30°C 4%
26°C or below
<1%
27°C
<1%
28°C
1%
29°C
1%
30°C
4%
31°C
38%
32°C
45%
33°C
14%
34°C
1%
35°C
<1%
36°C or higher
<1%
32°C 45%
31°C 38%
33°C 14%
30°C 4%
26°C or below
<1%
27°C
<1%
28°C
1%
29°C
1%
30°C
4%
31°C
38%
32°C
45%
33°C
14%
34°C
1%
35°C
<1%
36°C or higher
<1%
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=wsss
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 9, 2026, 12:57 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=wsssResolver
0x69c47De9D...The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=wsss
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=wsssResolver
0x69c47De9D...Recent forecasts from the Meteorological Service Singapore and international models indicate a daily maximum temperature for September 11 likely near the September climatological average of 31–32°C, driving the close market split between those two outcomes. Persistent southwest monsoon flow, southeasterly winds, and afternoon convective thunderstorms typical of the season introduce modest cooling potential through cloud cover and rainfall, while clear periods could allow brief peaks at or above 32°C. Model agreement remains high on overall conditions but shows sensitivity to the exact timing and intensity of showers, which often cap daytime highs in Singapore. Updated short-range guidance and real-time observations on the day itself will provide the final resolution inputs.
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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