Forecast models from sources including the Meteorological Service Singapore and global ensembles indicate a typical equatorial diurnal range for September 21, with minimum temperatures likely near 27°C overnight amid prevailing southwest monsoon flow, southeasterly winds, and scattered thundery showers. Recent nights have stayed above 27°C, limiting radiative cooling under humid, cloudy conditions, while afternoon heating has reached 31–34°C. The near-even split between sub-22°C and 31°C+ outcomes reflects trader focus on resolution criteria for the official daily low, potential model spread in cloud cover or localized rain timing, and historical variability around the 25–27°C September baseline. Updated model runs tonight will clarify steering patterns and any intensification of showers that could nudge the minimum.
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 21?
Lowest temperature in Singapore on September 21?
31°C or higher 96%
21°C or below 48.5%
25°C 40%
26°C 40%
NEW
NEW
Sep 21, 2026
21°C or below
49%
22°C
3%
23°C
4%
24°C
5%
25°C
40%
26°C
40%
27°C
23%
28°C
40%
29°C
40%
30°C
20%
31°C or higher
96%
31°C or higher 96%
21°C or below 48.5%
25°C 40%
26°C 40%
NEW
NEW
Sep 21, 2026
21°C or below
$0 Vol.
49%
22°C
$0 Vol.
3%
23°C
$0 Vol.
4%
24°C
$0 Vol.
5%
25°C
$0 Vol.
40%
26°C
$0 Vol.
40%
27°C
$0 Vol.
23%
28°C
$0 Vol.
40%
29°C
$0 Vol.
40%
30°C
$0 Vol.
20%
31°C or higher
$0 Vol.
96%
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 21 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.Forecast models from sources including the Meteorological Service Singapore and global ensembles indicate a typical equatorial diurnal range for September 21, with minimum temperatures likely near 27°C overnight amid prevailing southwest monsoon flow, southeasterly winds, and scattered thundery showers. Recent nights have stayed above 27°C, limiting radiative cooling under humid, cloudy conditions, while afternoon heating has reached 31–34°C. The near-even split between sub-22°C and 31°C+ outcomes reflects trader focus on resolution criteria for the official daily low, potential model spread in cloud cover or localized rain timing, and historical variability around the 25–27°C September baseline. Updated model runs tonight will clarify steering patterns and any intensification of showers that could nudge the minimum.
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 21 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 19, 2026, 12:30 AM ET
Volume
$0End Date
Sep 21, 2026Market Opened
Sep 19, 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 21 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.Forecast models from sources including the Meteorological Service Singapore and global ensembles indicate a typical equatorial diurnal range for September 21, with minimum temperatures likely near 27°C overnight amid prevailing southwest monsoon flow, southeasterly winds, and scattered thundery showers. Recent nights have stayed above 27°C, limiting radiative cooling under humid, cloudy conditions, while afternoon heating has reached 31–34°C. The near-even split between sub-22°C and 31°C+ outcomes reflects trader focus on resolution criteria for the official daily low, potential model spread in cloud cover or localized rain timing, and historical variability around the 25–27°C September baseline. Updated model runs tonight will clarify steering patterns and any intensification of showers that could nudge the minimum.
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 21 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 21, 2026Market Opened
Sep 19, 2026, 12:30 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=wsssResolver
0x69c47De9D...Forecast models from sources including the Meteorological Service Singapore and global ensembles indicate a typical equatorial diurnal range for September 21, with minimum temperatures likely near 27°C overnight amid prevailing southwest monsoon flow, southeasterly winds, and scattered thundery showers. Recent nights have stayed above 27°C, limiting radiative cooling under humid, cloudy conditions, while afternoon heating has reached 31–34°C. The near-even split between sub-22°C and 31°C+ outcomes reflects trader focus on resolution criteria for the official daily low, potential model spread in cloud cover or localized rain timing, and historical variability around the 25–27°C September baseline. Updated model runs tonight will clarify steering patterns and any intensification of showers that could nudge the minimum.
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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