Forecast models from the Finnish Meteorological Institute and others indicate a highest temperature in Helsinki on September 26 likely near 14–15°C amid persistent showers, southerly winds of 5–7 m/s, and extensive low cloud cover limiting solar heating. Baltic Sea surface temperatures near 15°C moderate the air mass, while variable precipitation timing creates uncertainty in the exact peak, supporting the close market split between 13°C, 14°C, and 15°C outcomes. Recent upstream patterns show mild maritime influence replacing cooler northerly flow, keeping values near seasonal norms without strong high-pressure development that could push readings higher. Updated model runs in the next 24–48 hours will refine the maximum.
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 26?
Highest temperature in Helsinki on September 26?
14°C 27%
15°C 27%
13°C 22%
12°C 16%
NEW
NEW
Sep 26, 2026
8°C or below
<1%
9°C
2%
10°C
5%
11°C
6%
12°C
16%
13°C
22%
14°C
27%
15°C
27%
16°C
14%
17°C
6%
18°C or higher
<1%
14°C 27%
15°C 27%
13°C 22%
12°C 16%
NEW
NEW
Sep 26, 2026
8°C or below
$0 Vol.
<1%
9°C
$0 Vol.
2%
10°C
$0 Vol.
5%
11°C
$0 Vol.
6%
12°C
$0 Vol.
16%
13°C
$0 Vol.
22%
14°C
$5 Vol.
27%
15°C
$0 Vol.
27%
16°C
$0 Vol.
14%
17°C
$8 Vol.
6%
18°C or higher
$0 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 26 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.Forecast models from the Finnish Meteorological Institute and others indicate a highest temperature in Helsinki on September 26 likely near 14–15°C amid persistent showers, southerly winds of 5–7 m/s, and extensive low cloud cover limiting solar heating. Baltic Sea surface temperatures near 15°C moderate the air mass, while variable precipitation timing creates uncertainty in the exact peak, supporting the close market split between 13°C, 14°C, and 15°C outcomes. Recent upstream patterns show mild maritime influence replacing cooler northerly flow, keeping values near seasonal norms without strong high-pressure development that could push readings higher. Updated model runs in the next 24–48 hours will refine the maximum.
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 26 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 24, 2026, 12:58 AM ET
Volume
$13End Date
Sep 26, 2026Market Opened
Sep 24, 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 26 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.Forecast models from the Finnish Meteorological Institute and others indicate a highest temperature in Helsinki on September 26 likely near 14–15°C amid persistent showers, southerly winds of 5–7 m/s, and extensive low cloud cover limiting solar heating. Baltic Sea surface temperatures near 15°C moderate the air mass, while variable precipitation timing creates uncertainty in the exact peak, supporting the close market split between 13°C, 14°C, and 15°C outcomes. Recent upstream patterns show mild maritime influence replacing cooler northerly flow, keeping values near seasonal norms without strong high-pressure development that could push readings higher. Updated model runs in the next 24–48 hours will refine the maximum.
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 26 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
$13End Date
Sep 26, 2026Market Opened
Sep 24, 2026, 12:58 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=efhkResolver
0x69c47de9d...Forecast models from the Finnish Meteorological Institute and others indicate a highest temperature in Helsinki on September 26 likely near 14–15°C amid persistent showers, southerly winds of 5–7 m/s, and extensive low cloud cover limiting solar heating. Baltic Sea surface temperatures near 15°C moderate the air mass, while variable precipitation timing creates uncertainty in the exact peak, supporting the close market split between 13°C, 14°C, and 15°C outcomes. Recent upstream patterns show mild maritime influence replacing cooler northerly flow, keeping values near seasonal norms without strong high-pressure development that could push readings higher. Updated model runs in the next 24–48 hours will refine the maximum.
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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