Forecast models from the Hong Kong Observatory and international agencies indicate the overnight minimum on September 21 will stabilize near 27°C, supported by light easterly winds, high humidity near 80-90%, and limited radiational cooling under partly cloudy skies with scattered showers. This aligns with late-September subtropical patterns where dew points remain elevated around 24-25°C, preventing sharper drops. Trader consensus at 90.5% for 27°C reflects alignment across ensemble runs and recent observations showing similar nightly floors. Stronger-than-expected convective cooling from thunderstorms or an unanticipated wind shift could push readings to 25-26°C, though current steering patterns make that unlikely before 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 Hong Kong on September 21?
Lowest temperature in Hong Kong on September 21?
27°C 91%
25°C 4%
22°C or below 2%
24°C 2%
$12,915 Vol.
$12,915 Vol.
Sep 21, 2026
22°C or below
2%
23°C
<1%
24°C
2%
25°C
4%
26°C
2%
27°C
91%
28°C
<1%
29°C
<1%
30°C
1%
31°C
<1%
32°C or higher
<1%
27°C 91%
25°C 4%
22°C or below 2%
24°C 2%
$12,915 Vol.
$12,915 Vol.
Sep 21, 2026
22°C or below
$37 Vol.
2%
23°C
$531 Vol.
<1%
24°C
$234 Vol.
2%
25°C
$560 Vol.
4%
26°C
$1,348 Vol.
2%
27°C
$3,484 Vol.
91%
28°C
$4,427 Vol.
<1%
29°C
$82 Vol.
<1%
30°C
$1,104 Vol.
1%
31°C
$1,104 Vol.
<1%
32°C or higher
$4 Vol.
<1%
This market will resolve to the temperature range that contains the lowest temperature recorded by the Hong Kong Observatory in degrees Celsius on 21 Sep '26.
The resolution source for this market will be information from the Hong Kong Observatory, specifically the "Absolute Daily Min (deg. C)" the specified date once information is finalized in the relevant "Daily Extract", available here: https://www.weather.gov.hk/en/cis/climat.htm
In the event that there is no data for the observation date by 11:59 PM ET on the seventh day following the observation date, this market will resolve to the lowest bracket.
This market will resolve once data for this date has been published on the resolution source, or by 11:59 PM ET on the seventh day following the observation date, whichever comes first.
The resolution source for this market measures temperatures in Celsius to one decimal place (eg, 9.1°C). Thus, this is the level of precision that will be used when resolving the market.
Any revisions to temperatures recorded after data is initially published for this market's timeframe will not be considered for this market's resolution.Forecast models from the Hong Kong Observatory and international agencies indicate the overnight minimum on September 21 will stabilize near 27°C, supported by light easterly winds, high humidity near 80-90%, and limited radiational cooling under partly cloudy skies with scattered showers. This aligns with late-September subtropical patterns where dew points remain elevated around 24-25°C, preventing sharper drops. Trader consensus at 90.5% for 27°C reflects alignment across ensemble runs and recent observations showing similar nightly floors. Stronger-than-expected convective cooling from thunderstorms or an unanticipated wind shift could push readings to 25-26°C, though current steering patterns make that unlikely before resolution.
This market will resolve to the temperature range that contains the lowest temperature recorded by the Hong Kong Observatory in degrees Celsius on 21 Sep '26.
The resolution source for this market will be information from the Hong Kong Observatory, specifically the "Absolute Daily Min (deg. C)" the specified date once information is finalized in the relevant "Daily Extract", available here: https://www.weather.gov.hk/en/cis/climat.htm
In the event that there is no data for the observation date by 11:59 PM ET on the seventh day following the observation date, this market will resolve to the lowest bracket.
This market will resolve once data for this date has been published on the resolution source, or by 11:59 PM ET on the seventh day following the observation date, whichever comes first.
The resolution source for this market measures temperatures in Celsius to one decimal place (eg, 9.1°C). Thus, this is the level of precision that will be used when resolving the market.
Any revisions to temperatures recorded after data is initially published for this market's timeframe will not be considered for this market's resolution.
The resolution source for this market will be information from the Hong Kong Observatory, specifically the "Absolute Daily Min (deg. C)" the specified date once information is finalized in the relevant "Daily Extract", available here: https://www.weather.gov.hk/en/cis/climat.htm
In the event that there is no data for the observation date by 11:59 PM ET on the seventh day following the observation date, this market will resolve to the lowest bracket.
This market will resolve once data for this date has been published on the resolution source, or by 11:59 PM ET on the seventh day following the observation date, whichever comes first.
The resolution source for this market measures temperatures in Celsius to one decimal place (eg, 9.1°C). Thus, this is the level of precision that will be used when resolving the market.
Any revisions to temperatures recorded after data is initially published for this market's timeframe will not be considered for this market's resolution.
Market Opened: Sep 19, 2026, 12:30 AM ET
Volume
$12,915End Date
Sep 21, 2026Market Opened
Sep 19, 2026, 12:30 AM ETResolver
0x69c47De9D...This market will resolve to the temperature range that contains the lowest temperature recorded by the Hong Kong Observatory in degrees Celsius on 21 Sep '26.
The resolution source for this market will be information from the Hong Kong Observatory, specifically the "Absolute Daily Min (deg. C)" the specified date once information is finalized in the relevant "Daily Extract", available here: https://www.weather.gov.hk/en/cis/climat.htm
In the event that there is no data for the observation date by 11:59 PM ET on the seventh day following the observation date, this market will resolve to the lowest bracket.
This market will resolve once data for this date has been published on the resolution source, or by 11:59 PM ET on the seventh day following the observation date, whichever comes first.
The resolution source for this market measures temperatures in Celsius to one decimal place (eg, 9.1°C). Thus, this is the level of precision that will be used when resolving the market.
Any revisions to temperatures recorded after data is initially published for this market's timeframe will not be considered for this market's resolution.Forecast models from the Hong Kong Observatory and international agencies indicate the overnight minimum on September 21 will stabilize near 27°C, supported by light easterly winds, high humidity near 80-90%, and limited radiational cooling under partly cloudy skies with scattered showers. This aligns with late-September subtropical patterns where dew points remain elevated around 24-25°C, preventing sharper drops. Trader consensus at 90.5% for 27°C reflects alignment across ensemble runs and recent observations showing similar nightly floors. Stronger-than-expected convective cooling from thunderstorms or an unanticipated wind shift could push readings to 25-26°C, though current steering patterns make that unlikely before resolution.
This market will resolve to the temperature range that contains the lowest temperature recorded by the Hong Kong Observatory in degrees Celsius on 21 Sep '26.
The resolution source for this market will be information from the Hong Kong Observatory, specifically the "Absolute Daily Min (deg. C)" the specified date once information is finalized in the relevant "Daily Extract", available here: https://www.weather.gov.hk/en/cis/climat.htm
In the event that there is no data for the observation date by 11:59 PM ET on the seventh day following the observation date, this market will resolve to the lowest bracket.
This market will resolve once data for this date has been published on the resolution source, or by 11:59 PM ET on the seventh day following the observation date, whichever comes first.
The resolution source for this market measures temperatures in Celsius to one decimal place (eg, 9.1°C). Thus, this is the level of precision that will be used when resolving the market.
Any revisions to temperatures recorded after data is initially published for this market's timeframe will not be considered for this market's resolution.
The resolution source for this market will be information from the Hong Kong Observatory, specifically the "Absolute Daily Min (deg. C)" the specified date once information is finalized in the relevant "Daily Extract", available here: https://www.weather.gov.hk/en/cis/climat.htm
In the event that there is no data for the observation date by 11:59 PM ET on the seventh day following the observation date, this market will resolve to the lowest bracket.
This market will resolve once data for this date has been published on the resolution source, or by 11:59 PM ET on the seventh day following the observation date, whichever comes first.
The resolution source for this market measures temperatures in Celsius to one decimal place (eg, 9.1°C). Thus, this is the level of precision that will be used when resolving the market.
Any revisions to temperatures recorded after data is initially published for this market's timeframe will not be considered for this market's resolution.
Volume
$12,915End Date
Sep 21, 2026Market Opened
Sep 19, 2026, 12:30 AM ETResolver
0x69c47De9D...Forecast models from the Hong Kong Observatory and international agencies indicate the overnight minimum on September 21 will stabilize near 27°C, supported by light easterly winds, high humidity near 80-90%, and limited radiational cooling under partly cloudy skies with scattered showers. This aligns with late-September subtropical patterns where dew points remain elevated around 24-25°C, preventing sharper drops. Trader consensus at 90.5% for 27°C reflects alignment across ensemble runs and recent observations showing similar nightly floors. Stronger-than-expected convective cooling from thunderstorms or an unanticipated wind shift could push readings to 25-26°C, though current steering patterns make that unlikely before 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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