Latest ensemble forecasts from the Finnish Meteorological Institute and ECMWF models indicate a maximum temperature near 19°C for Helsinki on August 22, reflecting the current market leader at 40.5% implied probability. This outcome stems from northerly flow advecting cooler maritime air under partly cloudy skies that limit daytime heating, keeping readings below the late-summer climatological average of roughly 20–21°C. Close secondary probabilities for 18°C and 20°C capture model spread arising from uncertainties in cloud cover timing and boundary-layer mixing, with minimal risk of reaching 21°C or higher absent stronger southerly advection. Updated short-range guidance expected overnight will likely refine these thresholds 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 Helsinki on August 22?
Highest temperature in Helsinki on August 22?
19°C 41%
18°C 33%
20°C 17%
17°C 9%
NEW
NEW
Aug 22, 2026
14°C or below
<1%
15°C
1%
16°C
1%
17°C
9%
18°C
33%
19°C
41%
20°C
17%
21°C
3%
22°C
1%
23°C
1%
24°C or higher
<1%
19°C 41%
18°C 33%
20°C 17%
17°C 9%
NEW
NEW
Aug 22, 2026
14°C or below
$8 Vol.
<1%
15°C
$97 Vol.
1%
16°C
$281 Vol.
1%
17°C
$263 Vol.
9%
18°C
$473 Vol.
33%
19°C
$183 Vol.
41%
20°C
$949 Vol.
17%
21°C
$258 Vol.
3%
22°C
$251 Vol.
1%
23°C
$278 Vol.
1%
24°C or higher
$192 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 22 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.Latest ensemble forecasts from the Finnish Meteorological Institute and ECMWF models indicate a maximum temperature near 19°C for Helsinki on August 22, reflecting the current market leader at 40.5% implied probability. This outcome stems from northerly flow advecting cooler maritime air under partly cloudy skies that limit daytime heating, keeping readings below the late-summer climatological average of roughly 20–21°C. Close secondary probabilities for 18°C and 20°C capture model spread arising from uncertainties in cloud cover timing and boundary-layer mixing, with minimal risk of reaching 21°C or higher absent stronger southerly advection. Updated short-range guidance expected overnight will likely refine these thresholds ahead of 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 22 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 22 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 20, 2026, 12:58 AM ET
Volume
$3,209End Date
Aug 22, 2026Market Opened
Aug 20, 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 22 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.Latest ensemble forecasts from the Finnish Meteorological Institute and ECMWF models indicate a maximum temperature near 19°C for Helsinki on August 22, reflecting the current market leader at 40.5% implied probability. This outcome stems from northerly flow advecting cooler maritime air under partly cloudy skies that limit daytime heating, keeping readings below the late-summer climatological average of roughly 20–21°C. Close secondary probabilities for 18°C and 20°C capture model spread arising from uncertainties in cloud cover timing and boundary-layer mixing, with minimal risk of reaching 21°C or higher absent stronger southerly advection. Updated short-range guidance expected overnight will likely refine these thresholds ahead of 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 22 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 22 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
$3,209End Date
Aug 22, 2026Market Opened
Aug 20, 2026, 12:58 AM ETResolution Source
https://www.wunderground.com/history/daily/fi/vantaa/EFHKResolver
0x69c47De9D...Latest ensemble forecasts from the Finnish Meteorological Institute and ECMWF models indicate a maximum temperature near 19°C for Helsinki on August 22, reflecting the current market leader at 40.5% implied probability. This outcome stems from northerly flow advecting cooler maritime air under partly cloudy skies that limit daytime heating, keeping readings below the late-summer climatological average of roughly 20–21°C. Close secondary probabilities for 18°C and 20°C capture model spread arising from uncertainties in cloud cover timing and boundary-layer mixing, with minimal risk of reaching 21°C or higher absent stronger southerly advection. Updated short-range guidance expected overnight will likely refine these thresholds 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
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