Recent forecasts from the Finnish Meteorological Institute and major ensemble models indicate a daytime maximum near 19°C in Helsinki on August 11, driving the market's leading 46.5% implied probability for that outcome. Moderate southwesterly flow and increased cloud cover are limiting diurnal heating relative to early-August climatology, where highs typically average 20–21°C. Ensemble spreads remain narrow, with secondary support for 18°C reflecting modest model consensus on cooling, while the 17.5% odds on 20°C capture limited upside potential if skies clear. No significant synoptic shifts have emerged in the latest runs, keeping the distribution tightly centered on 18–19°C ahead of final verification.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Helsinki on August 11?
Highest temperature in Helsinki on August 11?
19°C 47%
18°C 30%
20°C 18%
17°C 4%
NEW
NEW
Aug 11, 2026
15°C or below
1%
16°C
1%
17°C
4%
18°C
30%
19°C
47%
20°C
18%
21°C
4%
22°C
2%
23°C
<1%
24°C
<1%
25°C or higher
<1%
19°C 47%
18°C 30%
20°C 18%
17°C 4%
NEW
NEW
Aug 11, 2026
15°C or below
$420 Vol.
1%
16°C
$390 Vol.
1%
17°C
$263 Vol.
4%
18°C
$1,650 Vol.
30%
19°C
$749 Vol.
47%
20°C
$459 Vol.
18%
21°C
$794 Vol.
4%
22°C
$252 Vol.
2%
23°C
$301 Vol.
<1%
24°C
$148 Vol.
<1%
25°C or higher
$202 Vol.
<1%
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 11 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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 forecasts from the Finnish Meteorological Institute and major ensemble models indicate a daytime maximum near 19°C in Helsinki on August 11, driving the market's leading 46.5% implied probability for that outcome. Moderate southwesterly flow and increased cloud cover are limiting diurnal heating relative to early-August climatology, where highs typically average 20–21°C. Ensemble spreads remain narrow, with secondary support for 18°C reflecting modest model consensus on cooling, while the 17.5% odds on 20°C capture limited upside potential if skies clear. No significant synoptic shifts have emerged in the latest runs, keeping the distribution tightly centered on 18–19°C ahead of final verification.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 11 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 11 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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 9, 2026, 12:07 AM ET
Volume
$5,628End Date
Aug 11, 2026Market Opened
Aug 9, 2026, 12:07 AM ETResolution Source
https://www.wunderground.com/history/daily/fi/vantaa/EFHKResolver
0x69c47De9D...This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 11 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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 forecasts from the Finnish Meteorological Institute and major ensemble models indicate a daytime maximum near 19°C in Helsinki on August 11, driving the market's leading 46.5% implied probability for that outcome. Moderate southwesterly flow and increased cloud cover are limiting diurnal heating relative to early-August climatology, where highs typically average 20–21°C. Ensemble spreads remain narrow, with secondary support for 18°C reflecting modest model consensus on cooling, while the 17.5% odds on 20°C capture limited upside potential if skies clear. No significant synoptic shifts have emerged in the latest runs, keeping the distribution tightly centered on 18–19°C ahead of final verification.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 11 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 11 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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
$5,628End Date
Aug 11, 2026Market Opened
Aug 9, 2026, 12:07 AM ETResolution Source
https://www.wunderground.com/history/daily/fi/vantaa/EFHKResolver
0x69c47De9D...Recent forecasts from the Finnish Meteorological Institute and major ensemble models indicate a daytime maximum near 19°C in Helsinki on August 11, driving the market's leading 46.5% implied probability for that outcome. Moderate southwesterly flow and increased cloud cover are limiting diurnal heating relative to early-August climatology, where highs typically average 20–21°C. Ensemble spreads remain narrow, with secondary support for 18°C reflecting modest model consensus on cooling, while the 17.5% odds on 20°C capture limited upside potential if skies clear. No significant synoptic shifts have emerged in the latest runs, keeping the distribution tightly centered on 18–19°C ahead of final verification.
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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