**Trader consensus centers on 32–33°C for Singapore’s daily maximum on September 17, reflecting the Meteorological Service Singapore’s fortnightly outlook for the second half of the month.** Under prevailing southwest monsoon flow with southeasterly to southwesterly winds, localized thundery showers are forecast from late morning onward, which typically limits peak heating through increased cloud cover and evaporative cooling. Recent observations show the first half of September ran warmer than the long-term September average maximum of 31.6°C, with 12 days exceeding 34°C and a peak of 35.3°C, yet the expected rise in rainfall favors values near the lower end of the 33–34°C range cited for most days. Numerical guidance varies slightly around 32–33°C (roughly 89–91°F), consistent with the market’s heavy weighting toward those two outcomes and minimal probability assigned to 34°C or higher. Updated model runs and any late-day convergence signals will be the key near-term variables.
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?
33°C 62%
32°C 32%
34°C 3%
36°C <1%
$20,536 Vol.
$20,536 Vol.
28°C or below
<1%
29°C
1%
30°C
<1%
31°C
<1%
32°C
32%
33°C
62%
34°C
3%
35°C
<1%
36°C
1%
37°C
<1%
38°C or higher
<1%
33°C 62%
32°C 32%
34°C 3%
36°C <1%
$20,536 Vol.
$20,536 Vol.
28°C or below
<1%
29°C
1%
30°C
<1%
31°C
<1%
32°C
32%
33°C
62%
34°C
3%
35°C
<1%
36°C
1%
37°C
<1%
38°C or higher
<1%
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
Resolution Source
https://www.weather.gov/wrh/timeseries?site=wsssResolver
0x69c47De9D...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.
Resolution Source
https://www.weather.gov/wrh/timeseries?site=wsssResolver
0x69c47De9D...**Trader consensus centers on 32–33°C for Singapore’s daily maximum on September 17, reflecting the Meteorological Service Singapore’s fortnightly outlook for the second half of the month.** Under prevailing southwest monsoon flow with southeasterly to southwesterly winds, localized thundery showers are forecast from late morning onward, which typically limits peak heating through increased cloud cover and evaporative cooling. Recent observations show the first half of September ran warmer than the long-term September average maximum of 31.6°C, with 12 days exceeding 34°C and a peak of 35.3°C, yet the expected rise in rainfall favors values near the lower end of the 33–34°C range cited for most days. Numerical guidance varies slightly around 32–33°C (roughly 89–91°F), consistent with the market’s heavy weighting toward those two outcomes and minimal probability assigned to 34°C or higher. Updated model runs and any late-day convergence signals will be the key near-term variables.
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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Frequently Asked Questions