Official forecasts from Singapore's Meteorological Service point to a maximum of 33–34°C on September 21 under prevailing southwest monsoon flow, with localized afternoon thundery showers expected to develop. These convective clouds and brief rainfall episodes typically limit surface heating by increasing albedo and evaporative cooling, which helps explain why traders assign the highest implied probabilities to 32°C and 33°C outcomes. Recent weeks have featured frequent 34°C+ readings, yet the second-half September pattern of increased shower activity introduces modest downside risk to peak temperatures. Updated model runs and the next daily briefing from the NEA will provide the clearest signals ahead of market 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 21?
Highest temperature in Singapore on September 21?
33°C 53%
32°C 34%
34°C 12%
31°C 4%
NEW
NEW
Sep 21, 2026
29°C or below
1%
30°C
2%
31°C
4%
32°C
34%
33°C
53%
34°C
12%
35°C
1%
36°C
1%
37°C
1%
38°C
<1%
39°C or higher
<1%
33°C 53%
32°C 34%
34°C 12%
31°C 4%
NEW
NEW
Sep 21, 2026
29°C or below
$301 Vol.
1%
30°C
$459 Vol.
2%
31°C
$427 Vol.
4%
32°C
$1,735 Vol.
34%
33°C
$1,676 Vol.
53%
34°C
$717 Vol.
12%
35°C
$436 Vol.
1%
36°C
$264 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.Official forecasts from Singapore's Meteorological Service point to a maximum of 33–34°C on September 21 under prevailing southwest monsoon flow, with localized afternoon thundery showers expected to develop. These convective clouds and brief rainfall episodes typically limit surface heating by increasing albedo and evaporative cooling, which helps explain why traders assign the highest implied probabilities to 32°C and 33°C outcomes. Recent weeks have featured frequent 34°C+ readings, yet the second-half September pattern of increased shower activity introduces modest downside risk to peak temperatures. Updated model runs and the next daily briefing from the NEA will provide the clearest signals ahead of market resolution.
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
$6,865End 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.Official forecasts from Singapore's Meteorological Service point to a maximum of 33–34°C on September 21 under prevailing southwest monsoon flow, with localized afternoon thundery showers expected to develop. These convective clouds and brief rainfall episodes typically limit surface heating by increasing albedo and evaporative cooling, which helps explain why traders assign the highest implied probabilities to 32°C and 33°C outcomes. Recent weeks have featured frequent 34°C+ readings, yet the second-half September pattern of increased shower activity introduces modest downside risk to peak temperatures. Updated model runs and the next daily briefing from the NEA will provide the clearest signals ahead of market resolution.
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
$6,865End Date
Sep 21, 2026Market Opened
Sep 19, 2026, 12:56 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=wsssResolver
0x69c47De9D...Official forecasts from Singapore's Meteorological Service point to a maximum of 33–34°C on September 21 under prevailing southwest monsoon flow, with localized afternoon thundery showers expected to develop. These convective clouds and brief rainfall episodes typically limit surface heating by increasing albedo and evaporative cooling, which helps explain why traders assign the highest implied probabilities to 32°C and 33°C outcomes. Recent weeks have featured frequent 34°C+ readings, yet the second-half September pattern of increased shower activity introduces modest downside risk to peak temperatures. Updated model runs and the next daily briefing from the NEA will provide the clearest signals ahead of market 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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