The market's overwhelming consensus on a 25°C high for Milan on September 22 reflects numerical weather prediction models, including GFS runs, showing stable high-pressure conditions with mostly clear to sunny skies, light easterly winds, and afternoon peaks reaching that threshold around 14-17 local time. Official-style forecasts consistently project a diurnal range from near 19°C overnight to this daytime maximum, aligning with typical late-September climatology under anticyclonic influence without significant moisture or instability. A sudden increase in cloud cover, stronger winds, or a revised model run incorporating unexpected cooling could realistically shift the outcome lower, though current observational trends and short-range guidance support the implied probability remaining elevated until final measurements are confirmed.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Milan on September 22?
25°C 100.0%
19°C or below <1%
20°C <1%
21°C <1%
$68,426 Vol.
$68,426 Vol.
19°C or below
<1%
20°C
<1%
21°C
<1%
22°C
<1%
23°C
<1%
24°C
<1%
25°C
100%
26°C
<1%
27°C
<1%
28°C
<1%
29°C or higher
<1%
25°C 100.0%
19°C or below <1%
20°C <1%
21°C <1%
$68,426 Vol.
$68,426 Vol.
19°C or below
<1%
20°C
<1%
21°C
<1%
22°C
<1%
23°C
<1%
24°C
<1%
25°C
100%
26°C
<1%
27°C
<1%
28°C
<1%
29°C or higher
<1%
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=limc
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 20, 2026, 12:57 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=limcResolver
0x69c47De9D...The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=limc
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=limcResolver
0x69c47De9D...The market's overwhelming consensus on a 25°C high for Milan on September 22 reflects numerical weather prediction models, including GFS runs, showing stable high-pressure conditions with mostly clear to sunny skies, light easterly winds, and afternoon peaks reaching that threshold around 14-17 local time. Official-style forecasts consistently project a diurnal range from near 19°C overnight to this daytime maximum, aligning with typical late-September climatology under anticyclonic influence without significant moisture or instability. A sudden increase in cloud cover, stronger winds, or a revised model run incorporating unexpected cooling could realistically shift the outcome lower, though current observational trends and short-range guidance support the implied probability remaining elevated until final measurements are confirmed.
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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