Recent forecasts from models including GFS and official guidance point to a daytime high near 33°C for Singapore on September 21, supported by typical southwest monsoon flow, partly cloudy skies, and moderate southeast winds that allow sufficient solar heating while limiting widespread cloud cover. Afternoon thundery showers remain possible but are expected to be localized and short-duration, preserving peak temperatures in the 32–34°C range. Historical September data show daily maxima averaging near 31°C with frequent excursions above 33°C, aligning trader consensus with the 61% implied probability for 33°C and lower odds for outliers. Updated model runs and Meteorological Service Singapore briefings through the evening of September 20 will refine resolution criteria for the highest recorded temperature.
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 21?
Highest temperature in Singapore on September 21?
33°C 61%
32°C 26%
34°C 11%
31°C 4%
NEW
$12,030 Vol.
NEW
$12,030 Vol.
Sep 21, 2026
29°C or below
<1%
30°C
<1%
31°C
4%
32°C
26%
33°C
61%
34°C
11%
35°C
<1%
36°C
1%
37°C
<1%
38°C
<1%
39°C or higher
<1%
33°C 61%
32°C 26%
34°C 11%
31°C 4%
NEW
$12,030 Vol.
NEW
$12,030 Vol.
Sep 21, 2026
29°C or below
$461 Vol.
<1%
30°C
$1,036 Vol.
<1%
31°C
$1,232 Vol.
4%
32°C
$2,839 Vol.
26%
33°C
$2,871 Vol.
61%
34°C
$1,450 Vol.
11%
35°C
$1,003 Vol.
<1%
36°C
$290 Vol.
1%
37°C
$347 Vol.
<1%
38°C
$251 Vol.
<1%
39°C or higher
$251 Vol.
<1%
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Singapore Changi Airport Station in degrees Celsius on 21 Sep '26.
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.Recent forecasts from models including GFS and official guidance point to a daytime high near 33°C for Singapore on September 21, supported by typical southwest monsoon flow, partly cloudy skies, and moderate southeast winds that allow sufficient solar heating while limiting widespread cloud cover. Afternoon thundery showers remain possible but are expected to be localized and short-duration, preserving peak temperatures in the 32–34°C range. Historical September data show daily maxima averaging near 31°C with frequent excursions above 33°C, aligning trader consensus with the 61% implied probability for 33°C and lower odds for outliers. Updated model runs and Meteorological Service Singapore briefings through the evening of September 20 will refine resolution criteria for the highest recorded temperature.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Singapore Changi Airport Station in degrees Celsius on 21 Sep '26.
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.
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 19, 2026, 12:56 AM ET
Volume
$12,030End Date
Sep 21, 2026Market Opened
Sep 19, 2026, 12:56 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=wsssResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Singapore Changi Airport Station in degrees Celsius on 21 Sep '26.
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.Recent forecasts from models including GFS and official guidance point to a daytime high near 33°C for Singapore on September 21, supported by typical southwest monsoon flow, partly cloudy skies, and moderate southeast winds that allow sufficient solar heating while limiting widespread cloud cover. Afternoon thundery showers remain possible but are expected to be localized and short-duration, preserving peak temperatures in the 32–34°C range. Historical September data show daily maxima averaging near 31°C with frequent excursions above 33°C, aligning trader consensus with the 61% implied probability for 33°C and lower odds for outliers. Updated model runs and Meteorological Service Singapore briefings through the evening of September 20 will refine resolution criteria for the highest recorded temperature.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Singapore Changi Airport Station in degrees Celsius on 21 Sep '26.
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.
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.
Volume
$12,030End Date
Sep 21, 2026Market Opened
Sep 19, 2026, 12:56 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=wsssResolver
0x69c47De9D...Recent forecasts from models including GFS and official guidance point to a daytime high near 33°C for Singapore on September 21, supported by typical southwest monsoon flow, partly cloudy skies, and moderate southeast winds that allow sufficient solar heating while limiting widespread cloud cover. Afternoon thundery showers remain possible but are expected to be localized and short-duration, preserving peak temperatures in the 32–34°C range. Historical September data show daily maxima averaging near 31°C with frequent excursions above 33°C, aligning trader consensus with the 61% implied probability for 33°C and lower odds for outliers. Updated model runs and Meteorological Service Singapore briefings through the evening of September 20 will refine resolution criteria for the highest recorded temperature.
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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