Recent official forecasts from Singapore's Meteorological Service and global models indicate a daily minimum near 27–28°C for September 18, driven by persistent southwest monsoon flow, elevated dew points near 24–25°C, and extensive cloud cover that limits nocturnal radiative cooling. Scattered thundery showers expected during the afternoon and overnight may locally enhance mixing or suppress further temperature drops, while typical September climatology shows minima rarely falling below 26°C under similar conditions. Trader positioning around 26–27°C reflects this consensus, tempered by model spread in boundary-layer moisture and wind speed that could allow brief dips toward 26°C or hold values at 28°C depending on exact timing of any heavier rain bands. Updated high-resolution runs and official observations over the next 48 hours will refine these thresholds 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. · UpdatedLowest temperature in Singapore on September 18?
Lowest temperature in Singapore on September 18?
26°C 40%
27°C 40%
25°C 19%
28°C 19%
NEW
NEW
Sep 18, 2026
21°C or below
4%
22°C
4%
23°C
7%
24°C
11%
25°C
19%
26°C
40%
27°C
40%
28°C
19%
29°C
11%
30°C
7%
31°C or higher
5%
26°C 40%
27°C 40%
25°C 19%
28°C 19%
NEW
NEW
Sep 18, 2026
21°C or below
$0 Vol.
4%
22°C
$0 Vol.
4%
23°C
$0 Vol.
7%
24°C
$0 Vol.
11%
25°C
$0 Vol.
19%
26°C
$0 Vol.
40%
27°C
$0 Vol.
40%
28°C
$0 Vol.
19%
29°C
$0 Vol.
11%
30°C
$0 Vol.
7%
31°C or higher
$0 Vol.
5%
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Singapore Changi Airport Station in degrees Celsius on 18 Sep '26.
The resolution source for this market will be information from NOAA, specifically the lowest 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 official forecasts from Singapore's Meteorological Service and global models indicate a daily minimum near 27–28°C for September 18, driven by persistent southwest monsoon flow, elevated dew points near 24–25°C, and extensive cloud cover that limits nocturnal radiative cooling. Scattered thundery showers expected during the afternoon and overnight may locally enhance mixing or suppress further temperature drops, while typical September climatology shows minima rarely falling below 26°C under similar conditions. Trader positioning around 26–27°C reflects this consensus, tempered by model spread in boundary-layer moisture and wind speed that could allow brief dips toward 26°C or hold values at 28°C depending on exact timing of any heavier rain bands. Updated high-resolution runs and official observations over the next 48 hours will refine these thresholds ahead of market resolution.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Singapore Changi Airport Station in degrees Celsius on 18 Sep '26.
The resolution source for this market will be information from NOAA, specifically the lowest 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 lowest 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 16, 2026, 12:30 AM ET
Volume
$0End Date
Sep 18, 2026Market Opened
Sep 16, 2026, 12:30 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=wsssResolver
0x69c47De9D...This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Singapore Changi Airport Station in degrees Celsius on 18 Sep '26.
The resolution source for this market will be information from NOAA, specifically the lowest 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 official forecasts from Singapore's Meteorological Service and global models indicate a daily minimum near 27–28°C for September 18, driven by persistent southwest monsoon flow, elevated dew points near 24–25°C, and extensive cloud cover that limits nocturnal radiative cooling. Scattered thundery showers expected during the afternoon and overnight may locally enhance mixing or suppress further temperature drops, while typical September climatology shows minima rarely falling below 26°C under similar conditions. Trader positioning around 26–27°C reflects this consensus, tempered by model spread in boundary-layer moisture and wind speed that could allow brief dips toward 26°C or hold values at 28°C depending on exact timing of any heavier rain bands. Updated high-resolution runs and official observations over the next 48 hours will refine these thresholds ahead of market resolution.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Singapore Changi Airport Station in degrees Celsius on 18 Sep '26.
The resolution source for this market will be information from NOAA, specifically the lowest 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 lowest 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
$0End Date
Sep 18, 2026Market Opened
Sep 16, 2026, 12:30 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=wsssResolver
0x69c47De9D...Recent official forecasts from Singapore's Meteorological Service and global models indicate a daily minimum near 27–28°C for September 18, driven by persistent southwest monsoon flow, elevated dew points near 24–25°C, and extensive cloud cover that limits nocturnal radiative cooling. Scattered thundery showers expected during the afternoon and overnight may locally enhance mixing or suppress further temperature drops, while typical September climatology shows minima rarely falling below 26°C under similar conditions. Trader positioning around 26–27°C reflects this consensus, tempered by model spread in boundary-layer moisture and wind speed that could allow brief dips toward 26°C or hold values at 28°C depending on exact timing of any heavier rain bands. Updated high-resolution runs and official observations over the next 48 hours will refine these thresholds 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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