Recent short-term forecasts for Istanbul on August 20 align closely with historical August norms of 27–29°C daytime highs, driving tight clustering around 26–28°C outcomes. Primary factors include variable cloud cover and sea-breeze moderation from the Bosphorus and Black Sea, which can cap maximum temperatures, versus potential advection of warmer continental air masses under high-pressure systems. Model consensus remains fluid due to typical summer variability in the region’s transitional Mediterranean climate, where small shifts in wind patterns or humidity can alter peak readings by 1–2°C. Updated numerical weather predictions expected over the next 48 hours will likely refine trader positioning ahead of resolution.
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 August 20?
Highest temperature in Istanbul on August 20?
28°C 51%
27°C 27%
26°C 25%
29°C 15%
NEW
NEW
Aug 20, 2026
23°C or below
<1%
24°C
1%
25°C
7%
26°C
25%
27°C
27%
28°C
29%
29°C
15%
30°C
14%
31°C
7%
32°C
7%
33°C or higher
1%
28°C 51%
27°C 27%
26°C 25%
29°C 15%
NEW
NEW
Aug 20, 2026
23°C or below
$21 Vol.
<1%
24°C
$21 Vol.
1%
25°C
$5 Vol.
7%
26°C
$647 Vol.
25%
27°C
$78 Vol.
27%
28°C
$81 Vol.
29%
29°C
$95 Vol.
15%
30°C
$24 Vol.
14%
31°C
$5 Vol.
7%
32°C
$5 Vol.
7%
33°C or higher
$5 Vol.
1%
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Istanbul Airport in degrees Celsius on 20 Aug '26.
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.Recent short-term forecasts for Istanbul on August 20 align closely with historical August norms of 27–29°C daytime highs, driving tight clustering around 26–28°C outcomes. Primary factors include variable cloud cover and sea-breeze moderation from the Bosphorus and Black Sea, which can cap maximum temperatures, versus potential advection of warmer continental air masses under high-pressure systems. Model consensus remains fluid due to typical summer variability in the region’s transitional Mediterranean climate, where small shifts in wind patterns or humidity can alter peak readings by 1–2°C. Updated numerical weather predictions expected over the next 48 hours will likely refine trader positioning ahead of resolution.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Istanbul Airport in degrees Celsius on 20 Aug '26.
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.
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: Aug 18, 2026, 12:57 AM ET
Volume
$988End Date
Aug 20, 2026Market Opened
Aug 18, 2026, 12:57 AM ETResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Istanbul Airport in degrees Celsius on 20 Aug '26.
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.Recent short-term forecasts for Istanbul on August 20 align closely with historical August norms of 27–29°C daytime highs, driving tight clustering around 26–28°C outcomes. Primary factors include variable cloud cover and sea-breeze moderation from the Bosphorus and Black Sea, which can cap maximum temperatures, versus potential advection of warmer continental air masses under high-pressure systems. Model consensus remains fluid due to typical summer variability in the region’s transitional Mediterranean climate, where small shifts in wind patterns or humidity can alter peak readings by 1–2°C. Updated numerical weather predictions expected over the next 48 hours will likely refine trader positioning ahead of resolution.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Istanbul Airport in degrees Celsius on 20 Aug '26.
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.
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.
Volume
$988End Date
Aug 20, 2026Market Opened
Aug 18, 2026, 12:57 AM ETResolver
0x69c47De9D...Recent short-term forecasts for Istanbul on August 20 align closely with historical August norms of 27–29°C daytime highs, driving tight clustering around 26–28°C outcomes. Primary factors include variable cloud cover and sea-breeze moderation from the Bosphorus and Black Sea, which can cap maximum temperatures, versus potential advection of warmer continental air masses under high-pressure systems. Model consensus remains fluid due to typical summer variability in the region’s transitional Mediterranean climate, where small shifts in wind patterns or humidity can alter peak readings by 1–2°C. Updated numerical weather predictions expected over the next 48 hours will likely refine trader positioning ahead of 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