Recent ensemble forecasts from the Finnish Meteorological Institute and European models indicate a daytime maximum near 16°C in Helsinki on September 19, driven by persistent southwesterly flow advecting mild maritime air under mostly cloudy skies with scattered rain. This setup caps solar heating while maintaining temperatures close to or slightly above the long-term September average high of roughly 14–15°C. Trader consensus, reflected in the leading 42.5% implied probability for 16°C and 30.5% for 17°C, aligns with this guidance; minor model spread around shower timing introduces limited upside or downside risk before final updates on the 18th.
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 19?
Highest temperature in Helsinki on September 19?
16°C 42%
17°C 31%
15°C 15%
18°C 8%
NEW
NEW
Sep 19, 2026
11°C or below
<1%
12°C
1%
13°C
2%
14°C
5%
15°C
15%
16°C
42%
17°C
31%
18°C
8%
19°C
2%
20°C
1%
21°C or higher
<1%
16°C 42%
17°C 31%
15°C 15%
18°C 8%
NEW
NEW
Sep 19, 2026
11°C or below
$309 Vol.
<1%
12°C
$0 Vol.
1%
13°C
$5 Vol.
2%
14°C
$147 Vol.
5%
15°C
$215 Vol.
15%
16°C
$358 Vol.
42%
17°C
$282 Vol.
31%
18°C
$171 Vol.
8%
19°C
$0 Vol.
2%
20°C
$0 Vol.
1%
21°C or higher
$155 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 19 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.Recent ensemble forecasts from the Finnish Meteorological Institute and European models indicate a daytime maximum near 16°C in Helsinki on September 19, driven by persistent southwesterly flow advecting mild maritime air under mostly cloudy skies with scattered rain. This setup caps solar heating while maintaining temperatures close to or slightly above the long-term September average high of roughly 14–15°C. Trader consensus, reflected in the leading 42.5% implied probability for 16°C and 30.5% for 17°C, aligns with this guidance; minor model spread around shower timing introduces limited upside or downside risk before final updates on the 18th.
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 19 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 17, 2026, 12:58 AM ET
Volume
$1,642End Date
Sep 19, 2026Market Opened
Sep 17, 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 19 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.Recent ensemble forecasts from the Finnish Meteorological Institute and European models indicate a daytime maximum near 16°C in Helsinki on September 19, driven by persistent southwesterly flow advecting mild maritime air under mostly cloudy skies with scattered rain. This setup caps solar heating while maintaining temperatures close to or slightly above the long-term September average high of roughly 14–15°C. Trader consensus, reflected in the leading 42.5% implied probability for 16°C and 30.5% for 17°C, aligns with this guidance; minor model spread around shower timing introduces limited upside or downside risk before final updates on the 18th.
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 19 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
$1,642End Date
Sep 19, 2026Market Opened
Sep 17, 2026, 12:58 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=efhkResolver
0x69c47De9D...Recent ensemble forecasts from the Finnish Meteorological Institute and European models indicate a daytime maximum near 16°C in Helsinki on September 19, driven by persistent southwesterly flow advecting mild maritime air under mostly cloudy skies with scattered rain. This setup caps solar heating while maintaining temperatures close to or slightly above the long-term September average high of roughly 14–15°C. Trader consensus, reflected in the leading 42.5% implied probability for 16°C and 30.5% for 17°C, aligns with this guidance; minor model spread around shower timing introduces limited upside or downside risk before final updates on the 18th.
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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