Recent forecasts from the Finnish Meteorological Institute and ensemble models indicate a peak of 20–21°C on August 27 under mostly sunny skies, light southerly winds, and high pressure near 1028 hPa, positioning 21°C as the consensus outcome with 22°C a close second. Stable atmospheric conditions and minimal advection limit variability, while historical August averages near 19°C and recent model runs showing slight upward revisions support the current market-implied probabilities. Upcoming afternoon observations and any final model updates could refine the exact daily maximum before 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 27?
21°C 58%
22°C 33%
20°C 7%
23°C 2%
$10,725 Vol.
$10,725 Vol.
16°C or below
<1%
17°C
<1%
18°C
<1%
19°C
2%
20°C
7%
21°C
58%
22°C
33%
23°C
2%
24°C
<1%
25°C
<1%
26°C or higher
<1%
21°C 58%
22°C 33%
20°C 7%
23°C 2%
$10,725 Vol.
$10,725 Vol.
16°C or below
<1%
17°C
<1%
18°C
<1%
19°C
2%
20°C
7%
21°C
58%
22°C
33%
23°C
2%
24°C
<1%
25°C
<1%
26°C or higher
<1%
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 25, 2026, 12:58 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=efhkResolver
0x69c47De9D...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.
Resolution Source
https://www.weather.gov/wrh/timeseries?site=efhkResolver
0x69c47De9D...Recent forecasts from the Finnish Meteorological Institute and ensemble models indicate a peak of 20–21°C on August 27 under mostly sunny skies, light southerly winds, and high pressure near 1028 hPa, positioning 21°C as the consensus outcome with 22°C a close second. Stable atmospheric conditions and minimal advection limit variability, while historical August averages near 19°C and recent model runs showing slight upward revisions support the current market-implied probabilities. Upcoming afternoon observations and any final model updates could refine the exact daily maximum before 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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