**Persistent cloud cover, scattered showers, and a stable northeasterly flow are keeping Tokyo's overnight minimum temperatures tightly clustered around 19–20°C for September 10.** Official Japan Meteorological Agency guidance and multiple model runs (including ECMWF and GFS) project a low of 19°C under mostly overcast skies with frequent light rain, limiting radiational cooling while preventing significant warming. This aligns with the market-implied probabilities, where 20°C leads at 45.5% and 19°C follows at 34.5%, reflecting trader consensus on the narrow forecast range. Historical September climatology for Tokyo shows typical overnight lows near 21°C, but the current moist, cloudy pattern—stemming from a lingering frontal system—has depressed readings by 1–2°C relative to average. Key resolution thresholds hinge on the official JMA minimum recorded at the Tokyo station; any late-model shift toward clearer skies could push readings slightly higher, while heavier overnight rain would favor the lower end of the distribution. Updated forecasts and real-time observations through the night of September 9–10 will be the primary near-term catalysts for any probability adjustments.
Eksperimental na AI-generated summary na nire-reference ang Polymarket data. Hindi ito trading advice at wala itong papel sa kung paano nire-resolve ang market na ito. · Na-updateLowest temperature in Tokyo on September 10?
20°C 49%
19°C 30%
21°C 18%
18°C 8%
14°C or below
<1%
15°C
2%
16°C
4%
17°C
2%
18°C
8%
19°C
30%
20°C
49%
21°C
16%
22°C
5%
23°C
2%
24°C or higher
<1%
20°C 49%
19°C 30%
21°C 18%
18°C 8%
14°C or below
<1%
15°C
2%
16°C
4%
17°C
2%
18°C
8%
19°C
30%
20°C
49%
21°C
16%
22°C
5%
23°C
2%
24°C or higher
<1%
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.
Binuksan ang Market: Sep 8, 2026, 12:29 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=rjttResolver
0x69c47De9D...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.
Resolution Source
https://www.weather.gov/wrh/timeseries?site=rjttResolver
0x69c47De9D...**Persistent cloud cover, scattered showers, and a stable northeasterly flow are keeping Tokyo's overnight minimum temperatures tightly clustered around 19–20°C for September 10.** Official Japan Meteorological Agency guidance and multiple model runs (including ECMWF and GFS) project a low of 19°C under mostly overcast skies with frequent light rain, limiting radiational cooling while preventing significant warming. This aligns with the market-implied probabilities, where 20°C leads at 45.5% and 19°C follows at 34.5%, reflecting trader consensus on the narrow forecast range. Historical September climatology for Tokyo shows typical overnight lows near 21°C, but the current moist, cloudy pattern—stemming from a lingering frontal system—has depressed readings by 1–2°C relative to average. Key resolution thresholds hinge on the official JMA minimum recorded at the Tokyo station; any late-model shift toward clearer skies could push readings slightly higher, while heavier overnight rain would favor the lower end of the distribution. Updated forecasts and real-time observations through the night of September 9–10 will be the primary near-term catalysts for any probability adjustments.
Eksperimental na AI-generated summary na nire-reference ang Polymarket data. Hindi ito trading advice at wala itong papel sa kung paano nire-resolve ang market na ito. · Na-update
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