Forecasts from multiple models indicate scattered thunderstorms and increased cloud cover will limit solar heating in Milan on September 17, keeping the daily maximum near 23–25 °C rather than allowing further warming. This setup follows today’s clearer, warmer conditions and stems from an advancing moisture plume that raises humidity and reduces insolation during peak daylight hours. Traders assign nearly equal weight to 25 °C and 26 °C or higher because small differences in rain timing, cloud thickness, or localized clearing can shift the observed peak by 1–2 °C; official verification will use the highest instantaneous reading from Milan’s primary meteorological station. Historical September maxima average around 24 °C, providing context for the current tight distribution around that baseline.
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 17?
26°C or higher 38%
25°C 35%
24°C 19%
23°C 7%
$32,533 Vol.
$32,533 Vol.
16°C or below
<1%
17°C
<1%
18°C
<1%
19°C
<1%
20°C
<1%
21°C
<1%
22°C
3%
23°C
7%
24°C
19%
25°C
35%
26°C or higher
38%
26°C or higher 38%
25°C 35%
24°C 19%
23°C 7%
$32,533 Vol.
$32,533 Vol.
16°C or below
<1%
17°C
<1%
18°C
<1%
19°C
<1%
20°C
<1%
21°C
<1%
22°C
3%
23°C
7%
24°C
19%
25°C
35%
26°C or higher
38%
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 15, 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...Forecasts from multiple models indicate scattered thunderstorms and increased cloud cover will limit solar heating in Milan on September 17, keeping the daily maximum near 23–25 °C rather than allowing further warming. This setup follows today’s clearer, warmer conditions and stems from an advancing moisture plume that raises humidity and reduces insolation during peak daylight hours. Traders assign nearly equal weight to 25 °C and 26 °C or higher because small differences in rain timing, cloud thickness, or localized clearing can shift the observed peak by 1–2 °C; official verification will use the highest instantaneous reading from Milan’s primary meteorological station. Historical September maxima average around 24 °C, providing context for the current tight distribution around that baseline.
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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Frequently Asked Questions