Current forecast models from agencies tracking East Asian summer patterns show Shanghai overnight lows stabilizing near 27–28°C on August 27, driven by persistent subtropical high pressure, high humidity, and the absence of cooling fronts or typhoon activity. Historical climatology places late-August minima tightly around 26.5–27.5°C, with minimal day-to-day variance this late in the season. No revised model runs or observational shifts in the past 48 hours have introduced meaningful cooling potential, keeping market-implied odds concentrated on the 27°C and 28°C outcomes as the most probable resolutions based on skin-in-the-game trader consensus.
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 27?
28°C 54%
27°C 40%
29°C 9%
25°C 4%
23°C or below
2%
24°C
2%
25°C
4%
26°C
3%
27°C
40%
28°C
54%
29°C
9%
30°C
1%
31°C
1%
32°C
1%
33°C or higher
<1%
28°C 54%
27°C 40%
29°C 9%
25°C 4%
23°C or below
2%
24°C
2%
25°C
4%
26°C
3%
27°C
40%
28°C
54%
29°C
9%
30°C
1%
31°C
1%
32°C
1%
33°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 is unavailable or missing for the observation period, Weather Underground will be used as the secondary 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 25, 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 is unavailable or missing for the observation period, Weather Underground will be used as the secondary 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...Current forecast models from agencies tracking East Asian summer patterns show Shanghai overnight lows stabilizing near 27–28°C on August 27, driven by persistent subtropical high pressure, high humidity, and the absence of cooling fronts or typhoon activity. Historical climatology places late-August minima tightly around 26.5–27.5°C, with minimal day-to-day variance this late in the season. No revised model runs or observational shifts in the past 48 hours have introduced meaningful cooling potential, keeping market-implied odds concentrated on the 27°C and 28°C outcomes as the most probable resolutions based on skin-in-the-game trader consensus.
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