Recent forecasts from GFS and other models indicate a high near 15–16 °C in Helsinki on September 10, driven by persistent southwesterly flow, extensive cloud cover, and scattered showers that limit daytime heating. These conditions align with the climatological average high of 16.4 °C while suppressing any brief warming episodes that could push readings to 17 °C or above. Market-implied probabilities cluster tightly around 15–17 °C because ensemble guidance shows only modest spread in maximum temperature, with the exact peak hinging on the timing and intensity of precipitation and any temporary cloud breaks. Updated model runs and official observations in the next 48 hours will refine the most likely value within this narrow range.
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 September 10?
16°C 39%
17°C 27%
15°C 18%
18°C 10%
13°C or below
5%
14°C
4%
15°C
18%
16°C
39%
17°C
27%
18°C
10%
19°C
3%
20°C
1%
21°C
<1%
22°C
<1%
23°C or higher
<1%
16°C 39%
17°C 27%
15°C 18%
18°C 10%
13°C or below
5%
14°C
4%
15°C
18%
16°C
39%
17°C
27%
18°C
10%
19°C
3%
20°C
1%
21°C
<1%
22°C
<1%
23°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 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.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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: Sep 8, 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.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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 GFS and other models indicate a high near 15–16 °C in Helsinki on September 10, driven by persistent southwesterly flow, extensive cloud cover, and scattered showers that limit daytime heating. These conditions align with the climatological average high of 16.4 °C while suppressing any brief warming episodes that could push readings to 17 °C or above. Market-implied probabilities cluster tightly around 15–17 °C because ensemble guidance shows only modest spread in maximum temperature, with the exact peak hinging on the timing and intensity of precipitation and any temporary cloud breaks. Updated model runs and official observations in the next 48 hours will refine the most likely value within this narrow range.
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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