The Meteorological Service Singapore's fortnightly outlook for late September 2026, citing prevailing southwest monsoon conditions with southeast or southwest winds, positions daily maximum temperatures at 33–34 °C on most days as the core driver behind the market's heavy weighting toward 32 °C and 33 °C outcomes. Recent first-half data showing 12 days above 34 °C and a 35.3 °C peak at Sembawang on September 9 support the modest 2.5 % implied probability for 34 °C, while localized thundery showers typical in the afternoon during this period introduce downward pressure through increased cloud cover and evaporative cooling. Historical September averages of 31.6 °C at the Changi climate station and model consensus around 31–33 °C further align trader sentiment with these narrow thresholds ahead of tomorrow's official readings.
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 17?
Highest temperature in Singapore on September 17?
33°C 58%
32°C 38%
34°C 3%
31°C 2%
NEW
$18,786 Vol.
NEW
$18,786 Vol.
Sep 17, 2026
28°C or below
<1%
29°C
1%
30°C
<1%
31°C
2%
32°C
38%
33°C
58%
34°C
3%
35°C
<1%
36°C
1%
37°C
<1%
38°C or higher
<1%
33°C 58%
32°C 38%
34°C 3%
31°C 2%
NEW
$18,786 Vol.
NEW
$18,786 Vol.
Sep 17, 2026
28°C or below
$1,539 Vol.
<1%
29°C
$822 Vol.
1%
30°C
$954 Vol.
<1%
31°C
$1,908 Vol.
2%
32°C
$5,107 Vol.
38%
33°C
$3,499 Vol.
58%
34°C
$2,337 Vol.
3%
35°C
$1,209 Vol.
<1%
36°C
$1,625 Vol.
1%
37°C
$321 Vol.
<1%
38°C or higher
$321 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 17 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 Meteorological Service Singapore's fortnightly outlook for late September 2026, citing prevailing southwest monsoon conditions with southeast or southwest winds, positions daily maximum temperatures at 33–34 °C on most days as the core driver behind the market's heavy weighting toward 32 °C and 33 °C outcomes. Recent first-half data showing 12 days above 34 °C and a 35.3 °C peak at Sembawang on September 9 support the modest 2.5 % implied probability for 34 °C, while localized thundery showers typical in the afternoon during this period introduce downward pressure through increased cloud cover and evaporative cooling. Historical September averages of 31.6 °C at the Changi climate station and model consensus around 31–33 °C further align trader sentiment with these narrow thresholds ahead of tomorrow's official readings.
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 17 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 15, 2026, 12:57 AM ET
Volume
$18,786End Date
Sep 17, 2026Market Opened
Sep 15, 2026, 12:57 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 17 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 Meteorological Service Singapore's fortnightly outlook for late September 2026, citing prevailing southwest monsoon conditions with southeast or southwest winds, positions daily maximum temperatures at 33–34 °C on most days as the core driver behind the market's heavy weighting toward 32 °C and 33 °C outcomes. Recent first-half data showing 12 days above 34 °C and a 35.3 °C peak at Sembawang on September 9 support the modest 2.5 % implied probability for 34 °C, while localized thundery showers typical in the afternoon during this period introduce downward pressure through increased cloud cover and evaporative cooling. Historical September averages of 31.6 °C at the Changi climate station and model consensus around 31–33 °C further align trader sentiment with these narrow thresholds ahead of tomorrow's official readings.
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 17 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
$18,786End Date
Sep 17, 2026Market Opened
Sep 15, 2026, 12:57 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=wsssResolver
0x69c47De9D...The Meteorological Service Singapore's fortnightly outlook for late September 2026, citing prevailing southwest monsoon conditions with southeast or southwest winds, positions daily maximum temperatures at 33–34 °C on most days as the core driver behind the market's heavy weighting toward 32 °C and 33 °C outcomes. Recent first-half data showing 12 days above 34 °C and a 35.3 °C peak at Sembawang on September 9 support the modest 2.5 % implied probability for 34 °C, while localized thundery showers typical in the afternoon during this period introduce downward pressure through increased cloud cover and evaporative cooling. Historical September averages of 31.6 °C at the Changi climate station and model consensus around 31–33 °C further align trader sentiment with these narrow thresholds ahead of tomorrow's official readings.
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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