**Persistent warm, humid conditions under southeast flow position 27°C as the dominant outcome for Shanghai’s minimum temperature on August 30.** Multiple official and commercial forecasts converge on an overnight low of 27–28°C, with highs near 31–33°C amid 60–85% rain chances from thunderstorms and light showers. This reflects typical late-August subtropical maritime influence in the Yangtze River Delta, where high dew points (around 25–26°C) and overnight cloud cover limit radiative cooling. Recent model runs and agency guidance (including Met Office, local Chinese meteorological sources, and international ensembles) show stable steering patterns with no incoming cold front or significant dry-air intrusion that would allow deeper cooling. Historical climatology for Shanghai in late August supports minima clustered around 26–28°C under similar humid, breezy regimes. With resolution imminent and forecast confidence high, trader consensus heavily favors 27°C (79% implied probability), while modest probabilities on 26°C or 28°C capture residual uncertainty in exact hourly minimum timing and local microclimate variations.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Shanghai on August 30?
27°C 78%
28°C 12%
25°C 7%
26°C 7%
22°C or below
<1%
23°C
<1%
24°C
1%
25°C
7%
26°C
7%
27°C
78%
28°C
12%
29°C
1%
30°C
<1%
31°C
<1%
32°C or higher
<1%
27°C 78%
28°C 12%
25°C 7%
26°C 7%
22°C or below
<1%
23°C
<1%
24°C
1%
25°C
7%
26°C
7%
27°C
78%
28°C
12%
29°C
1%
30°C
<1%
31°C
<1%
32°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=zspd
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.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °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: Aug 28, 2026, 12:30 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=zspdResolver
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=zspd
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.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °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.weather.gov/wrh/timeseries?site=zspdResolver
0x69c47De9D...**Persistent warm, humid conditions under southeast flow position 27°C as the dominant outcome for Shanghai’s minimum temperature on August 30.** Multiple official and commercial forecasts converge on an overnight low of 27–28°C, with highs near 31–33°C amid 60–85% rain chances from thunderstorms and light showers. This reflects typical late-August subtropical maritime influence in the Yangtze River Delta, where high dew points (around 25–26°C) and overnight cloud cover limit radiative cooling. Recent model runs and agency guidance (including Met Office, local Chinese meteorological sources, and international ensembles) show stable steering patterns with no incoming cold front or significant dry-air intrusion that would allow deeper cooling. Historical climatology for Shanghai in late August supports minima clustered around 26–28°C under similar humid, breezy regimes. With resolution imminent and forecast confidence high, trader consensus heavily favors 27°C (79% implied probability), while modest probabilities on 26°C or 28°C capture residual uncertainty in exact hourly minimum timing and local microclimate variations.
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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