**Forecasts from multiple models, including Finnish Meteorological Institute data and European ensembles, indicate a highest temperature of 16–17°C in Helsinki on September 9 under persistent southwesterly flow, extensive low-to-mid cloud cover, and scattered light rain.** This setup limits daytime radiative heating and keeps the boundary layer moist, capping the maximum near the seasonal climatological average of ~16.6°C. The tight spread between the market’s leading outcomes—17°C at 43.5% and 18°C at 37%—reflects minor model differences in the timing and intensity of any brief clearing or slightly stronger warm advection ahead of the main rain band. A slightly earlier or stronger break in the cloud deck could allow an extra degree of warming before precipitation arrives, while continued overcast conditions or heavier showers would favor the lower end of the range. Updated model runs and official guidance expected overnight will be the key near-term drivers of any shift in trader positioning.
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 9?
Highest temperature in Helsinki on September 9?
17°C 44%
18°C 37%
16°C 13%
19°C 6%
NEW
NEW
Sep 9, 2026
11°C or below
<1%
12°C
<1%
13°C
1%
14°C
2%
15°C
3%
16°C
13%
17°C
44%
18°C
37%
19°C
6%
20°C
2%
21°C or higher
1%
17°C 44%
18°C 37%
16°C 13%
19°C 6%
NEW
NEW
Sep 9, 2026
11°C or below
$271 Vol.
<1%
12°C
$271 Vol.
<1%
13°C
$0 Vol.
1%
14°C
$145 Vol.
2%
15°C
$118 Vol.
3%
16°C
$820 Vol.
13%
17°C
$372 Vol.
44%
18°C
$452 Vol.
37%
19°C
$456 Vol.
6%
20°C
$186 Vol.
2%
21°C or higher
$132 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 9 Sep '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 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.**Forecasts from multiple models, including Finnish Meteorological Institute data and European ensembles, indicate a highest temperature of 16–17°C in Helsinki on September 9 under persistent southwesterly flow, extensive low-to-mid cloud cover, and scattered light rain.** This setup limits daytime radiative heating and keeps the boundary layer moist, capping the maximum near the seasonal climatological average of ~16.6°C. The tight spread between the market’s leading outcomes—17°C at 43.5% and 18°C at 37%—reflects minor model differences in the timing and intensity of any brief clearing or slightly stronger warm advection ahead of the main rain band. A slightly earlier or stronger break in the cloud deck could allow an extra degree of warming before precipitation arrives, while continued overcast conditions or heavier showers would favor the lower end of the range. Updated model runs and official guidance expected overnight will be the key near-term drivers of any shift in trader positioning.
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 9 Sep '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 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.
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 7, 2026, 12:58 AM ET
Volume
$3,222End Date
Sep 9, 2026Market Opened
Sep 7, 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 9 Sep '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 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.**Forecasts from multiple models, including Finnish Meteorological Institute data and European ensembles, indicate a highest temperature of 16–17°C in Helsinki on September 9 under persistent southwesterly flow, extensive low-to-mid cloud cover, and scattered light rain.** This setup limits daytime radiative heating and keeps the boundary layer moist, capping the maximum near the seasonal climatological average of ~16.6°C. The tight spread between the market’s leading outcomes—17°C at 43.5% and 18°C at 37%—reflects minor model differences in the timing and intensity of any brief clearing or slightly stronger warm advection ahead of the main rain band. A slightly earlier or stronger break in the cloud deck could allow an extra degree of warming before precipitation arrives, while continued overcast conditions or heavier showers would favor the lower end of the range. Updated model runs and official guidance expected overnight will be the key near-term drivers of any shift in trader positioning.
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 9 Sep '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 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.
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.
Volume
$3,222End Date
Sep 9, 2026Market Opened
Sep 7, 2026, 12:58 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=efhkResolver
0x69c47De9D...**Forecasts from multiple models, including Finnish Meteorological Institute data and European ensembles, indicate a highest temperature of 16–17°C in Helsinki on September 9 under persistent southwesterly flow, extensive low-to-mid cloud cover, and scattered light rain.** This setup limits daytime radiative heating and keeps the boundary layer moist, capping the maximum near the seasonal climatological average of ~16.6°C. The tight spread between the market’s leading outcomes—17°C at 43.5% and 18°C at 37%—reflects minor model differences in the timing and intensity of any brief clearing or slightly stronger warm advection ahead of the main rain band. A slightly earlier or stronger break in the cloud deck could allow an extra degree of warming before precipitation arrives, while continued overcast conditions or heavier showers would favor the lower end of the range. Updated model runs and official guidance expected overnight will be the key near-term drivers of any shift in trader positioning.
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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