Recent forecast consensus from sources including the Finnish Meteorological Institute points to a September 4 maximum of 17–18°C in Helsinki, driven by southwest flow advecting mild maritime air under increasing cloud cover and light precipitation. Model runs show limited daytime solar heating due to overcast conditions and modest winds, keeping temperatures near early-September climatological averages of 17–18°C rather than allowing stronger warming. The closely matched market-implied probabilities for 17°C and 18°C reflect genuine uncertainty in exact peak timing and localized cloud breaks, with new official guidance expected within 48 hours to refine the outcome.
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 4?
Highest temperature in Helsinki on September 4?
18°C 41%
17°C 37%
19°C 14%
16°C 9%
NEW
NEW
Sep 4, 2026
11°C or below
2%
12°C
2%
13°C
2%
14°C
4%
15°C
5%
16°C
9%
17°C
37%
18°C
41%
19°C
14%
20°C
4%
21°C or higher
2%
18°C 41%
17°C 37%
19°C 14%
16°C 9%
NEW
NEW
Sep 4, 2026
11°C or below
$0 Vol.
2%
12°C
$0 Vol.
2%
13°C
$0 Vol.
2%
14°C
$0 Vol.
4%
15°C
$8 Vol.
5%
16°C
$24 Vol.
9%
17°C
$84 Vol.
37%
18°C
$5 Vol.
41%
19°C
$79 Vol.
14%
20°C
$0 Vol.
4%
21°C or higher
$0 Vol.
2%
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 4 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 forecast consensus from sources including the Finnish Meteorological Institute points to a September 4 maximum of 17–18°C in Helsinki, driven by southwest flow advecting mild maritime air under increasing cloud cover and light precipitation. Model runs show limited daytime solar heating due to overcast conditions and modest winds, keeping temperatures near early-September climatological averages of 17–18°C rather than allowing stronger warming. The closely matched market-implied probabilities for 17°C and 18°C reflect genuine uncertainty in exact peak timing and localized cloud breaks, with new official guidance expected within 48 hours to refine the outcome.
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 4 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 2, 2026, 12:58 AM ET
Volume
$200End Date
Sep 4, 2026Market Opened
Sep 2, 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 4 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 forecast consensus from sources including the Finnish Meteorological Institute points to a September 4 maximum of 17–18°C in Helsinki, driven by southwest flow advecting mild maritime air under increasing cloud cover and light precipitation. Model runs show limited daytime solar heating due to overcast conditions and modest winds, keeping temperatures near early-September climatological averages of 17–18°C rather than allowing stronger warming. The closely matched market-implied probabilities for 17°C and 18°C reflect genuine uncertainty in exact peak timing and localized cloud breaks, with new official guidance expected within 48 hours to refine the outcome.
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 4 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
$200End Date
Sep 4, 2026Market Opened
Sep 2, 2026, 12:58 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=efhkResolver
0x69c47De9D...Recent forecast consensus from sources including the Finnish Meteorological Institute points to a September 4 maximum of 17–18°C in Helsinki, driven by southwest flow advecting mild maritime air under increasing cloud cover and light precipitation. Model runs show limited daytime solar heating due to overcast conditions and modest winds, keeping temperatures near early-September climatological averages of 17–18°C rather than allowing stronger warming. The closely matched market-implied probabilities for 17°C and 18°C reflect genuine uncertainty in exact peak timing and localized cloud breaks, with new official guidance expected within 48 hours to refine the outcome.
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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