Recent forecasts from multiple meteorological sources, including the Met Office and Finnish models, indicate a mild late-summer pattern over Helsinki with daytime maxima near 18–19°C on August 31 amid variable cloud cover, scattered showers, and southwesterly winds. These conditions align closely with climatological normals for the date (historical average high around 18°C) and reflect the absence of strong high-pressure systems or warm advection that could push temperatures higher. Market-implied probabilities concentrate on 18–19°C because ensemble guidance shows limited day-to-day variability and only modest uncertainty from timing of precipitation or breaks in cloud, which typically cap or slightly elevate afternoon readings by 1–2°C. Updated model runs through late August have reinforced this narrow range, supporting trader consensus around these outcomes while assigning lower odds to outliers like 20–21°C or sub-17°C values.
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 31?
19°C 44%
18°C 26%
20°C 21%
17°C 7%
12°C or below
<1%
13°C
<1%
14°C
<1%
15°C
1%
16°C
6%
17°C
7%
18°C
26%
19°C
44%
20°C
21%
21°C
6%
22°C or higher
4%
19°C 44%
18°C 26%
20°C 21%
17°C 7%
12°C or below
<1%
13°C
<1%
14°C
<1%
15°C
1%
16°C
6%
17°C
7%
18°C
26%
19°C
44%
20°C
21%
21°C
6%
22°C or higher
4%
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 for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the 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 29, 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 for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the 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 multiple meteorological sources, including the Met Office and Finnish models, indicate a mild late-summer pattern over Helsinki with daytime maxima near 18–19°C on August 31 amid variable cloud cover, scattered showers, and southwesterly winds. These conditions align closely with climatological normals for the date (historical average high around 18°C) and reflect the absence of strong high-pressure systems or warm advection that could push temperatures higher. Market-implied probabilities concentrate on 18–19°C because ensemble guidance shows limited day-to-day variability and only modest uncertainty from timing of precipitation or breaks in cloud, which typically cap or slightly elevate afternoon readings by 1–2°C. Updated model runs through late August have reinforced this narrow range, supporting trader consensus around these outcomes while assigning lower odds to outliers like 20–21°C or sub-17°C values.
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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