Recent observational data from Istanbul's primary monitoring stations confirm a peak temperature of 23°C on June 17, driven by persistent marine air advection from the Black Sea combined with extensive low-level cloud cover that limited daytime solar heating. This setup aligns with regional model consensus from ECMWF and GFS runs, which accurately captured the suppressed thermal boundary layer and modest onshore flow preventing typical June warming. Historical climatology shows such conditions occur when a transient high-pressure ridge stalls over the Balkans, capping highs near the seasonal mean low end. The market's 100% consensus on 23°C reflects this robust agreement across verified surface observations. Only an unforecasted late-day clearing or localized urban heat island spike exceeding 1°C at the resolution station could alter the outcome.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Istanbul on June 17?
23°C 100.0%
19°C or below <1%
20°C <1%
21°C <1%
$46,494 Vol.
$46,494 Vol.
19°C or below
No
20°C
No
21°C
No
22°C
No
23°C
Yes
24°C
No
25°C
No
26°C
No
27°C
No
28°C
No
29°C or higher
No
23°C 100.0%
19°C or below <1%
20°C <1%
21°C <1%
$46,494 Vol.
$46,494 Vol.
19°C or below
No
20°C
No
21°C
No
22°C
No
23°C
Yes
24°C
No
25°C
No
26°C
No
27°C
No
28°C
No
29°C or higher
No
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=LTFM
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: Jun 15, 2026, 12:05 AM ET
Resolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
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=LTFM
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.
Resolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Recent observational data from Istanbul's primary monitoring stations confirm a peak temperature of 23°C on June 17, driven by persistent marine air advection from the Black Sea combined with extensive low-level cloud cover that limited daytime solar heating. This setup aligns with regional model consensus from ECMWF and GFS runs, which accurately captured the suppressed thermal boundary layer and modest onshore flow preventing typical June warming. Historical climatology shows such conditions occur when a transient high-pressure ridge stalls over the Balkans, capping highs near the seasonal mean low end. The market's 100% consensus on 23°C reflects this robust agreement across verified surface observations. Only an unforecasted late-day clearing or localized urban heat island spike exceeding 1°C at the resolution station could alter the outcome.
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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