Official forecasts from the Japan Meteorological Agency and global models such as GFS point to a 23°C overnight minimum in Tokyo on September 8, driven by persistent cloud cover, widespread rain, and southerly winds that limit radiative cooling and maintain high humidity near 90%. These conditions align with typical late-summer patterns where warm, moist air from the Pacific moderates temperatures, keeping the daily low close to recent observations around 23–25°C. Trader consensus at 100% on 23°C reflects this model agreement and ongoing precipitation. A sudden clearing of skies or a rapid wind shift to northerly flow could allow greater cooling and push the low below 23°C, though current steering patterns make such shifts unlikely before midnight.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Tokyo on September 8?
Lowest temperature in Tokyo on September 8?
23°C 100.0%
20°C or below <1%
21°C <1%
22°C <1%
$16,928 Vol.
$16,928 Vol.
Sep 8, 2026
20°C or below
No
21°C
No
22°C
No
23°C
Yes
24°C
No
25°C
No
26°C
No
27°C
No
28°C
No
29°C
No
30°C or higher
No
23°C 100.0%
20°C or below <1%
21°C <1%
22°C <1%
$16,928 Vol.
$16,928 Vol.
Sep 8, 2026
20°C or below
$966 Vol.
No
21°C
$1,694 Vol.
No
22°C
$1,026 Vol.
No
23°C
$3,139 Vol.
Yes
24°C
$3,363 Vol.
No
25°C
$2,569 Vol.
No
26°C
$2,685 Vol.
No
27°C
$608 Vol.
No
28°C
$93 Vol.
No
29°C
$649 Vol.
No
30°C or higher
$140 Vol.
No
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Tokyo Haneda Airport Station in degrees Celsius on 8 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=rjtt
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.Official forecasts from the Japan Meteorological Agency and global models such as GFS point to a 23°C overnight minimum in Tokyo on September 8, driven by persistent cloud cover, widespread rain, and southerly winds that limit radiative cooling and maintain high humidity near 90%. These conditions align with typical late-summer patterns where warm, moist air from the Pacific moderates temperatures, keeping the daily low close to recent observations around 23–25°C. Trader consensus at 100% on 23°C reflects this model agreement and ongoing precipitation. A sudden clearing of skies or a rapid wind shift to northerly flow could allow greater cooling and push the low below 23°C, though current steering patterns make such shifts unlikely before midnight.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Tokyo Haneda Airport Station in degrees Celsius on 8 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=rjtt
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=rjtt
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 6, 2026, 12:29 AM ET
Volume
$16,928End Date
Sep 8, 2026Market Opened
Sep 6, 2026, 12:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=rjttResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Tokyo Haneda Airport Station in degrees Celsius on 8 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=rjtt
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.Official forecasts from the Japan Meteorological Agency and global models such as GFS point to a 23°C overnight minimum in Tokyo on September 8, driven by persistent cloud cover, widespread rain, and southerly winds that limit radiative cooling and maintain high humidity near 90%. These conditions align with typical late-summer patterns where warm, moist air from the Pacific moderates temperatures, keeping the daily low close to recent observations around 23–25°C. Trader consensus at 100% on 23°C reflects this model agreement and ongoing precipitation. A sudden clearing of skies or a rapid wind shift to northerly flow could allow greater cooling and push the low below 23°C, though current steering patterns make such shifts unlikely before midnight.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Tokyo Haneda Airport Station in degrees Celsius on 8 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=rjtt
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=rjtt
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
$16,928End Date
Sep 8, 2026Market Opened
Sep 6, 2026, 12:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=rjttResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official forecasts from the Japan Meteorological Agency and global models such as GFS point to a 23°C overnight minimum in Tokyo on September 8, driven by persistent cloud cover, widespread rain, and southerly winds that limit radiative cooling and maintain high humidity near 90%. These conditions align with typical late-summer patterns where warm, moist air from the Pacific moderates temperatures, keeping the daily low close to recent observations around 23–25°C. Trader consensus at 100% on 23°C reflects this model agreement and ongoing precipitation. A sudden clearing of skies or a rapid wind shift to northerly flow could allow greater cooling and push the low below 23°C, though current steering patterns make such shifts unlikely before midnight.
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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