Recent model consensus from sources including the Met Office and regional forecasts points to a minimum temperature in Shanghai on August 31 of 25–27 °C under partly cloudy skies with light southeast winds and isolated showers. This range reflects the lingering influence of a warm, moist subtropical airmass typical for late August, with overnight radiative cooling limited by high humidity near 80 % and urban heat retention. Historical August minima average around 24 °C, but the current pattern has kept readings 1–3 °C above baseline. Minor disagreements among model runs on cloud timing and any brief rain-cooled pockets create the tight spread between 26 °C and 27 °C outcomes, while traders await updated ECMWF and GFS guidance 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 Shanghai on August 31?
27°C 45%
26°C 34%
25°C 26%
32°C or higher 25%
22°C or below
7%
23°C
11%
24°C
16%
25°C
26%
26°C
34%
27°C
45%
28°C
15%
29°C
19%
30°C
18%
31°C
<1%
32°C or higher
25%
27°C 45%
26°C 34%
25°C 26%
32°C or higher 25%
22°C or below
7%
23°C
11%
24°C
16%
25°C
26%
26°C
34%
27°C
45%
28°C
15%
29°C
19%
30°C
18%
31°C
<1%
32°C or higher
25%
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 29, 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...Recent model consensus from sources including the Met Office and regional forecasts points to a minimum temperature in Shanghai on August 31 of 25–27 °C under partly cloudy skies with light southeast winds and isolated showers. This range reflects the lingering influence of a warm, moist subtropical airmass typical for late August, with overnight radiative cooling limited by high humidity near 80 % and urban heat retention. Historical August minima average around 24 °C, but the current pattern has kept readings 1–3 °C above baseline. Minor disagreements among model runs on cloud timing and any brief rain-cooled pockets create the tight spread between 26 °C and 27 °C outcomes, while traders await updated ECMWF and GFS guidance before resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions