Trader consensus on Helsinki's August 20 maximum temperature centers on 19–20°C, reflecting tight clustering in the latest ensemble forecasts from the European Centre for Medium-Range Weather Forecasts and Finnish Meteorological Institute. Mid-August conditions feature a relatively flat pressure gradient over the Baltic region, with limited advection of warmer continental air and modest daytime heating under partly cloudy skies. Model spreads arise primarily from uncertainties in boundary-layer moisture and timing of any weak frontal passage, which could trim or boost afternoon peaks by 1–2°C. Historical late-summer climatology shows daily maxima averaging near 18–19°C, providing a baseline that current guidance closely tracks. Updated model runs and observational data from the next 48 hours will further narrow the distribution ahead of market 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 Helsinki on August 20?
Highest temperature in Helsinki on August 20?
19°C 30%
20°C 27%
18°C 15%
21°C 11%
NEW
NEW
Aug 20, 2026
14°C or below
<1%
15°C
1%
16°C
2%
17°C
7%
18°C
15%
19°C
30%
20°C
27%
21°C
11%
22°C
4%
23°C
2%
24°C or higher
<1%
19°C 30%
20°C 27%
18°C 15%
21°C 11%
NEW
NEW
Aug 20, 2026
14°C or below
$57 Vol.
<1%
15°C
$58 Vol.
1%
16°C
$59 Vol.
2%
17°C
$146 Vol.
7%
18°C
$369 Vol.
15%
19°C
$112 Vol.
30%
20°C
$732 Vol.
27%
21°C
$168 Vol.
11%
22°C
$109 Vol.
4%
23°C
$59 Vol.
2%
24°C or higher
$294 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 20 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.Trader consensus on Helsinki's August 20 maximum temperature centers on 19–20°C, reflecting tight clustering in the latest ensemble forecasts from the European Centre for Medium-Range Weather Forecasts and Finnish Meteorological Institute. Mid-August conditions feature a relatively flat pressure gradient over the Baltic region, with limited advection of warmer continental air and modest daytime heating under partly cloudy skies. Model spreads arise primarily from uncertainties in boundary-layer moisture and timing of any weak frontal passage, which could trim or boost afternoon peaks by 1–2°C. Historical late-summer climatology shows daily maxima averaging near 18–19°C, providing a baseline that current guidance closely tracks. Updated model runs and observational data from the next 48 hours will further narrow the distribution ahead of market resolution.
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 20 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 20 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 18, 2026, 12:58 AM ET
Volume
$2,165End Date
Aug 20, 2026Market Opened
Aug 18, 2026, 12:58 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 20 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.Trader consensus on Helsinki's August 20 maximum temperature centers on 19–20°C, reflecting tight clustering in the latest ensemble forecasts from the European Centre for Medium-Range Weather Forecasts and Finnish Meteorological Institute. Mid-August conditions feature a relatively flat pressure gradient over the Baltic region, with limited advection of warmer continental air and modest daytime heating under partly cloudy skies. Model spreads arise primarily from uncertainties in boundary-layer moisture and timing of any weak frontal passage, which could trim or boost afternoon peaks by 1–2°C. Historical late-summer climatology shows daily maxima averaging near 18–19°C, providing a baseline that current guidance closely tracks. Updated model runs and observational data from the next 48 hours will further narrow the distribution ahead of market resolution.
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 20 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 20 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
$2,165End Date
Aug 20, 2026Market Opened
Aug 18, 2026, 12:58 AM ETResolution Source
https://www.wunderground.com/history/daily/fi/vantaa/EFHKResolver
0x69c47De9D...Trader consensus on Helsinki's August 20 maximum temperature centers on 19–20°C, reflecting tight clustering in the latest ensemble forecasts from the European Centre for Medium-Range Weather Forecasts and Finnish Meteorological Institute. Mid-August conditions feature a relatively flat pressure gradient over the Baltic region, with limited advection of warmer continental air and modest daytime heating under partly cloudy skies. Model spreads arise primarily from uncertainties in boundary-layer moisture and timing of any weak frontal passage, which could trim or boost afternoon peaks by 1–2°C. Historical late-summer climatology shows daily maxima averaging near 18–19°C, providing a baseline that current guidance closely tracks. Updated model runs and observational data from the next 48 hours will further narrow the distribution ahead of market resolution.
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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