Recent forecasts from multiple models indicate a daytime high in Helsinki of 11–12°C under persistent cloud cover, light northerly winds, and periods of drizzle or patchy rain that limit solar heating and enhance evaporative cooling. Early-morning observations near 7–8°C and a climatological September average around 13°C frame the tight market split, with traders weighting the precise timing of any brief clearing against steady onshore flow. Model consensus shows minimal spread beyond these two values, while resolution hinges on the official Finnish Meteorological Institute maximum, which will capture the highest instantaneous reading amid fluctuating conditions.
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 23?
Highest temperature in Helsinki on September 23?
12°C 45%
11°C 40%
10°C 7.8%
13°C 7%
$33,090 Vol.
$33,090 Vol.
Sep 23, 2026
7°C or below
<1%
8°C
<1%
9°C
2%
10°C
8%
11°C
40%
12°C
45%
13°C
7%
14°C
2%
15°C
4%
16°C
<1%
17°C or higher
<1%
12°C 45%
11°C 40%
10°C 7.8%
13°C 7%
$33,090 Vol.
$33,090 Vol.
Sep 23, 2026
7°C or below
$506 Vol.
<1%
8°C
$363 Vol.
<1%
9°C
$2,612 Vol.
2%
10°C
$2,605 Vol.
8%
11°C
$8,333 Vol.
40%
12°C
$5,335 Vol.
45%
13°C
$6,369 Vol.
7%
14°C
$3,001 Vol.
2%
15°C
$1,934 Vol.
4%
16°C
$1,012 Vol.
<1%
17°C or higher
$1,021 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 23 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 multiple models indicate a daytime high in Helsinki of 11–12°C under persistent cloud cover, light northerly winds, and periods of drizzle or patchy rain that limit solar heating and enhance evaporative cooling. Early-morning observations near 7–8°C and a climatological September average around 13°C frame the tight market split, with traders weighting the precise timing of any brief clearing against steady onshore flow. Model consensus shows minimal spread beyond these two values, while resolution hinges on the official Finnish Meteorological Institute maximum, which will capture the highest instantaneous reading amid fluctuating conditions.
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 23 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 21, 2026, 12:58 AM ET
Volume
$33,090End Date
Sep 23, 2026Market Opened
Sep 21, 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 23 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 multiple models indicate a daytime high in Helsinki of 11–12°C under persistent cloud cover, light northerly winds, and periods of drizzle or patchy rain that limit solar heating and enhance evaporative cooling. Early-morning observations near 7–8°C and a climatological September average around 13°C frame the tight market split, with traders weighting the precise timing of any brief clearing against steady onshore flow. Model consensus shows minimal spread beyond these two values, while resolution hinges on the official Finnish Meteorological Institute maximum, which will capture the highest instantaneous reading amid fluctuating conditions.
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 23 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
$33,090End Date
Sep 23, 2026Market Opened
Sep 21, 2026, 12:58 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=efhkResolver
0x69c47De9D...Recent forecasts from multiple models indicate a daytime high in Helsinki of 11–12°C under persistent cloud cover, light northerly winds, and periods of drizzle or patchy rain that limit solar heating and enhance evaporative cooling. Early-morning observations near 7–8°C and a climatological September average around 13°C frame the tight market split, with traders weighting the precise timing of any brief clearing against steady onshore flow. Model consensus shows minimal spread beyond these two values, while resolution hinges on the official Finnish Meteorological Institute maximum, which will capture the highest instantaneous reading amid fluctuating conditions.
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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