**Current observational data from Tokyo monitoring stations, including Japan Meteorological Agency records, confirm a minimum temperature of 21°C on September 9, 2026, amid overcast skies, light rain, and northeasterly winds that limited radiative cooling.** Persistent cloud cover and high humidity—around 80-95%—prevented temperatures from dropping further, aligning with climatological expectations for early September where overnight lows typically range 19-23°C under similar conditions. Model consensus from multiple agencies reinforced this outcome, with no significant deviations in updated forecasts. While station measurement precision or localized microclimate effects could theoretically alter the exact recorded low, the overwhelming trader consensus at 21°C reflects robust real-time data alignment unlikely to shift without major revisions.
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 9?
Lowest temperature in Tokyo on September 9?
21°C 100.0%
19°C or below <1%
20°C <1%
22°C <1%
$10,440 Vol.
$10,440 Vol.
Sep 9, 2026
19°C or below
No
20°C
No
21°C
Yes
22°C
No
23°C
No
24°C
No
25°C
No
26°C
No
27°C
No
28°C
No
29°C or higher
No
21°C 100.0%
19°C or below <1%
20°C <1%
22°C <1%
$10,440 Vol.
$10,440 Vol.
Sep 9, 2026
19°C or below
$165 Vol.
No
20°C
$1,074 Vol.
No
21°C
$1,257 Vol.
Yes
22°C
$807 Vol.
No
23°C
$3,358 Vol.
No
24°C
$1,635 Vol.
No
25°C
$760 Vol.
No
26°C
$303 Vol.
No
27°C
$800 Vol.
No
28°C
$101 Vol.
No
29°C or higher
$181 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 9 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.**Current observational data from Tokyo monitoring stations, including Japan Meteorological Agency records, confirm a minimum temperature of 21°C on September 9, 2026, amid overcast skies, light rain, and northeasterly winds that limited radiative cooling.** Persistent cloud cover and high humidity—around 80-95%—prevented temperatures from dropping further, aligning with climatological expectations for early September where overnight lows typically range 19-23°C under similar conditions. Model consensus from multiple agencies reinforced this outcome, with no significant deviations in updated forecasts. While station measurement precision or localized microclimate effects could theoretically alter the exact recorded low, the overwhelming trader consensus at 21°C reflects robust real-time data alignment unlikely to shift without major revisions.
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 9 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 7, 2026, 12:29 AM ET
Volume
$10,440End Date
Sep 9, 2026Market Opened
Sep 7, 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 9 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.**Current observational data from Tokyo monitoring stations, including Japan Meteorological Agency records, confirm a minimum temperature of 21°C on September 9, 2026, amid overcast skies, light rain, and northeasterly winds that limited radiative cooling.** Persistent cloud cover and high humidity—around 80-95%—prevented temperatures from dropping further, aligning with climatological expectations for early September where overnight lows typically range 19-23°C under similar conditions. Model consensus from multiple agencies reinforced this outcome, with no significant deviations in updated forecasts. While station measurement precision or localized microclimate effects could theoretically alter the exact recorded low, the overwhelming trader consensus at 21°C reflects robust real-time data alignment unlikely to shift without major revisions.
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 9 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
$10,440End Date
Sep 9, 2026Market Opened
Sep 7, 2026, 12:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=rjttResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
**Current observational data from Tokyo monitoring stations, including Japan Meteorological Agency records, confirm a minimum temperature of 21°C on September 9, 2026, amid overcast skies, light rain, and northeasterly winds that limited radiative cooling.** Persistent cloud cover and high humidity—around 80-95%—prevented temperatures from dropping further, aligning with climatological expectations for early September where overnight lows typically range 19-23°C under similar conditions. Model consensus from multiple agencies reinforced this outcome, with no significant deviations in updated forecasts. While station measurement precision or localized microclimate effects could theoretically alter the exact recorded low, the overwhelming trader consensus at 21°C reflects robust real-time data alignment unlikely to shift without major revisions.
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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