Recent forecasts from the Finnish Meteorological Institute and other models point to a daytime high near 16°C on September 15 under partly cloudy skies and light southerly winds, placing the outcome in a narrow band that explains the near-even split between 16°C and 17°C market-implied odds. Light winds and stable pressure limit rapid temperature changes, while modest model differences in afternoon cloud cover and boundary-layer mixing account for the slim possibility of reaching 17°C versus holding at 15°C. Historical September averages in Helsinki hover several degrees lower, so current conditions reflect a mild anomaly that traders appear to be pricing with high uncertainty in the final 48 hours before resolution.
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 15?
Highest temperature in Helsinki on September 15?
16°C 44%
17°C 41%
18°C 12%
15°C 11%
NEW
NEW
Sep 15, 2026
11°C or below
2%
12°C
3%
13°C
5%
14°C
5%
15°C
11%
16°C
44%
17°C
41%
18°C
12%
19°C
2%
20°C
2%
21°C or higher
2%
16°C 44%
17°C 41%
18°C 12%
15°C 11%
NEW
NEW
Sep 15, 2026
11°C or below
$10 Vol.
2%
12°C
$10 Vol.
3%
13°C
$10 Vol.
5%
14°C
$0 Vol.
5%
15°C
$0 Vol.
11%
16°C
$125 Vol.
44%
17°C
$34 Vol.
41%
18°C
$8 Vol.
12%
19°C
$10 Vol.
2%
20°C
$10 Vol.
2%
21°C or higher
$10 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 15 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 forecasts from the Finnish Meteorological Institute and other models point to a daytime high near 16°C on September 15 under partly cloudy skies and light southerly winds, placing the outcome in a narrow band that explains the near-even split between 16°C and 17°C market-implied odds. Light winds and stable pressure limit rapid temperature changes, while modest model differences in afternoon cloud cover and boundary-layer mixing account for the slim possibility of reaching 17°C versus holding at 15°C. Historical September averages in Helsinki hover several degrees lower, so current conditions reflect a mild anomaly that traders appear to be pricing with high uncertainty in the final 48 hours before resolution.
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 15 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 13, 2026, 12:59 PM ET
Volume
$226End Date
Sep 15, 2026Market Opened
Sep 13, 2026, 12:59 PM 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 15 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 forecasts from the Finnish Meteorological Institute and other models point to a daytime high near 16°C on September 15 under partly cloudy skies and light southerly winds, placing the outcome in a narrow band that explains the near-even split between 16°C and 17°C market-implied odds. Light winds and stable pressure limit rapid temperature changes, while modest model differences in afternoon cloud cover and boundary-layer mixing account for the slim possibility of reaching 17°C versus holding at 15°C. Historical September averages in Helsinki hover several degrees lower, so current conditions reflect a mild anomaly that traders appear to be pricing with high uncertainty in the final 48 hours before resolution.
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 15 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
$226End Date
Sep 15, 2026Market Opened
Sep 13, 2026, 12:59 PM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=efhkResolver
0x69c47De9D...Recent forecasts from the Finnish Meteorological Institute and other models point to a daytime high near 16°C on September 15 under partly cloudy skies and light southerly winds, placing the outcome in a narrow band that explains the near-even split between 16°C and 17°C market-implied odds. Light winds and stable pressure limit rapid temperature changes, while modest model differences in afternoon cloud cover and boundary-layer mixing account for the slim possibility of reaching 17°C versus holding at 15°C. Historical September averages in Helsinki hover several degrees lower, so current conditions reflect a mild anomaly that traders appear to be pricing with high uncertainty in the final 48 hours before resolution.
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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