Recent forecasts from multiple models and the Meteorological Service Singapore indicate a daily maximum near 31–32°C for September 19, aligning with September’s long-term average high of 31.6°C under prevailing southwest monsoon conditions. Localized thundery showers are possible in the afternoon, but overall rainfall is expected near normal with limited cooling effect. The first half of September featured frequent highs above 34°C, yet current guidance shows stabilization around the seasonal norm rather than continued extreme heat. Market-implied odds heavily favor 32°C as the most probable outcome, reflecting consensus in short-range model runs and the narrow historical range for daily maxima in mid-September. Updated official forecasts tomorrow will provide the key data point ahead of resolution.
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 19?
32°C 49%
33°C 31%
31°C 18%
34°C 3.5%
$12,978 Vol.
$12,978 Vol.
27°C or below
<1%
28°C
<1%
29°C
<1%
30°C
1%
31°C
18%
32°C
49%
33°C
31%
34°C
3%
35°C
1%
36°C
<1%
37°C or higher
<1%
32°C 49%
33°C 31%
31°C 18%
34°C 3.5%
$12,978 Vol.
$12,978 Vol.
27°C or below
<1%
28°C
<1%
29°C
<1%
30°C
1%
31°C
18%
32°C
49%
33°C
31%
34°C
3%
35°C
1%
36°C
<1%
37°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 17, 2026, 12:56 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 multiple models and the Meteorological Service Singapore indicate a daily maximum near 31–32°C for September 19, aligning with September’s long-term average high of 31.6°C under prevailing southwest monsoon conditions. Localized thundery showers are possible in the afternoon, but overall rainfall is expected near normal with limited cooling effect. The first half of September featured frequent highs above 34°C, yet current guidance shows stabilization around the seasonal norm rather than continued extreme heat. Market-implied odds heavily favor 32°C as the most probable outcome, reflecting consensus in short-range model runs and the narrow historical range for daily maxima in mid-September. Updated official forecasts tomorrow will provide the key data point ahead of resolution.
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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