Recent forecasts from the Finnish Meteorological Institute and complementary models indicate a daytime maximum near 19–20 °C on 28 August under partly cloudy skies and light southerly flow, placing the highest temperature squarely in the market’s leading 20 °C bin. Ensemble guidance shows limited spread, with afternoon peaks most often projected between 18–21 °C, consistent with late-August climatology (average high ~18.7 °C) and the absence of strong warm advection or clear-sky radiative heating. Minor model differences in cloud cover and boundary-layer mixing explain the secondary weight on 21 °C, while cooler or warmer outliers remain low-probability given stable synoptic conditions. Updated runs overnight will refine timing of the peak before official observations resolve the market.
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 28?
Highest temperature in Helsinki on August 28?
20°C 57%
21°C 28%
19°C 11%
22°C 4%
NEW
NEW
Aug 28, 2026
15°C or below
<1%
16°C
1%
17°C
<1%
18°C
3%
19°C
11%
20°C
57%
21°C
28%
22°C
4%
23°C
<1%
24°C
<1%
25°C or higher
<1%
20°C 57%
21°C 28%
19°C 11%
22°C 4%
NEW
NEW
Aug 28, 2026
15°C or below
$15 Vol.
<1%
16°C
$231 Vol.
1%
17°C
$100 Vol.
<1%
18°C
$139 Vol.
3%
19°C
$907 Vol.
11%
20°C
$1,338 Vol.
57%
21°C
$3,885 Vol.
28%
22°C
$467 Vol.
4%
23°C
$141 Vol.
<1%
24°C
$238 Vol.
<1%
25°C or higher
$481 Vol.
<1%
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Helsinki Vantaa Airport Station in degrees Celsius on 28 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=efhk
If NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
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 forecasts from the Finnish Meteorological Institute and complementary models indicate a daytime maximum near 19–20 °C on 28 August under partly cloudy skies and light southerly flow, placing the highest temperature squarely in the market’s leading 20 °C bin. Ensemble guidance shows limited spread, with afternoon peaks most often projected between 18–21 °C, consistent with late-August climatology (average high ~18.7 °C) and the absence of strong warm advection or clear-sky radiative heating. Minor model differences in cloud cover and boundary-layer mixing explain the secondary weight on 21 °C, while cooler or warmer outliers remain low-probability given stable synoptic conditions. Updated runs overnight will refine timing of the peak before official observations resolve the market.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Helsinki Vantaa Airport Station in degrees Celsius on 28 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=efhk
If NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
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=efhk
If NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
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 26, 2026, 12:58 AM ET
Volume
$7,942End Date
Aug 28, 2026Market Opened
Aug 26, 2026, 12:58 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=efhkResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Helsinki Vantaa Airport Station in degrees Celsius on 28 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=efhk
If NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
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 forecasts from the Finnish Meteorological Institute and complementary models indicate a daytime maximum near 19–20 °C on 28 August under partly cloudy skies and light southerly flow, placing the highest temperature squarely in the market’s leading 20 °C bin. Ensemble guidance shows limited spread, with afternoon peaks most often projected between 18–21 °C, consistent with late-August climatology (average high ~18.7 °C) and the absence of strong warm advection or clear-sky radiative heating. Minor model differences in cloud cover and boundary-layer mixing explain the secondary weight on 21 °C, while cooler or warmer outliers remain low-probability given stable synoptic conditions. Updated runs overnight will refine timing of the peak before official observations resolve the market.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Helsinki Vantaa Airport Station in degrees Celsius on 28 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=efhk
If NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
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=efhk
If NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
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
$7,942End Date
Aug 28, 2026Market Opened
Aug 26, 2026, 12:58 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=efhkResolver
0x69c47De9D...Recent forecasts from the Finnish Meteorological Institute and complementary models indicate a daytime maximum near 19–20 °C on 28 August under partly cloudy skies and light southerly flow, placing the highest temperature squarely in the market’s leading 20 °C bin. Ensemble guidance shows limited spread, with afternoon peaks most often projected between 18–21 °C, consistent with late-August climatology (average high ~18.7 °C) and the absence of strong warm advection or clear-sky radiative heating. Minor model differences in cloud cover and boundary-layer mixing explain the secondary weight on 21 °C, while cooler or warmer outliers remain low-probability given stable synoptic conditions. Updated runs overnight will refine timing of the peak before official observations resolve the market.
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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