Official measurements from Singapore’s Meteorological Service stations, including Changi, established a daily maximum of 33 °C on May 31 amid typical late-May inter-monsoon conditions featuring light winds, humidity above 80 %, and scattered afternoon convective showers. These factors routinely cap highs in the 32–34 °C range, with historical May climatology showing 33 °C as a frequent modal value. The market’s near-certain positioning on this outcome aligns with real-time observational data and model consensus that showers arrived in time to prevent brief excursions higher. A post-analysis revision of station readings or an unusually delayed rain band allowing brief clear-sky heating could still shift the final official figure, though such adjustments remain rare once preliminary values are confirmed.
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 May 31?
33°C 100.0%
26°C or below <1%
27°C <1%
28°C <1%
$71,498 Vol.
$71,498 Vol.
26°C or below
No
27°C
No
28°C
No
29°C
No
30°C
No
31°C
No
32°C
No
33°C
Yes
34°C
No
35°C
No
36°C or higher
No
33°C 100.0%
26°C or below <1%
27°C <1%
28°C <1%
$71,498 Vol.
$71,498 Vol.
26°C or below
No
27°C
No
28°C
No
29°C
No
30°C
No
31°C
No
32°C
No
33°C
Yes
34°C
No
35°C
No
36°C or higher
No
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Singapore Changi Airport Station, available here: https://www.wunderground.com/history/daily/sg/singapore/WSSS.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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: May 29, 2026, 12:34 AM ET
Resolution Source
https://www.wunderground.com/history/daily/sg/singapore/WSSSResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Singapore Changi Airport Station, available here: https://www.wunderground.com/history/daily/sg/singapore/WSSS.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.wunderground.com/history/daily/sg/singapore/WSSSResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official measurements from Singapore’s Meteorological Service stations, including Changi, established a daily maximum of 33 °C on May 31 amid typical late-May inter-monsoon conditions featuring light winds, humidity above 80 %, and scattered afternoon convective showers. These factors routinely cap highs in the 32–34 °C range, with historical May climatology showing 33 °C as a frequent modal value. The market’s near-certain positioning on this outcome aligns with real-time observational data and model consensus that showers arrived in time to prevent brief excursions higher. A post-analysis revision of station readings or an unusually delayed rain band allowing brief clear-sky heating could still shift the final official figure, though such adjustments remain rare once preliminary values are confirmed.
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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