Current ensemble forecasts from regional models indicate a southerly airflow advecting mild maritime air over southern Finland ahead of an approaching low-pressure system, supporting overnight lows near 11–12 °C under persistent cloud cover and showers on September 26. These conditions suppress radiative cooling that would otherwise allow temperatures to approach single digits, while limiting daytime warming to around 14–15 °C. The near-even market split between sub-6 °C and 16 °C+ outcomes reflects lingering uncertainty in exact timing of frontal passage and boundary-layer mixing, with resolution hinging on whether any brief clearing occurs before dawn. Updated runs from the Finnish Meteorological Institute and ECMWF over the next 24–48 hours will clarify precipitation efficiency and wind shifts that determine the precise minimum.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Helsinki on September 26?
Lowest temperature in Helsinki on September 26?
16°C or higher 98%
10°C 40%
11°C 40%
7°C 39%
NEW
NEW
Sep 26, 2026
6°C or below
<1%
7°C
39%
8°C
39%
9°C
39%
10°C
40%
11°C
40%
12°C
39%
13°C
39%
14°C
39%
15°C
39%
16°C or higher
98%
16°C or higher 98%
10°C 40%
11°C 40%
7°C 39%
NEW
NEW
Sep 26, 2026
6°C or below
$0 Vol.
<1%
7°C
$0 Vol.
39%
8°C
$0 Vol.
39%
9°C
$0 Vol.
39%
10°C
$0 Vol.
40%
11°C
$0 Vol.
40%
12°C
$0 Vol.
39%
13°C
$0 Vol.
39%
14°C
$0 Vol.
39%
15°C
$0 Vol.
39%
16°C or higher
$0 Vol.
98%
This market will resolve to the temperature range that contains the lowest 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 lowest 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.Current ensemble forecasts from regional models indicate a southerly airflow advecting mild maritime air over southern Finland ahead of an approaching low-pressure system, supporting overnight lows near 11–12 °C under persistent cloud cover and showers on September 26. These conditions suppress radiative cooling that would otherwise allow temperatures to approach single digits, while limiting daytime warming to around 14–15 °C. The near-even market split between sub-6 °C and 16 °C+ outcomes reflects lingering uncertainty in exact timing of frontal passage and boundary-layer mixing, with resolution hinging on whether any brief clearing occurs before dawn. Updated runs from the Finnish Meteorological Institute and ECMWF over the next 24–48 hours will clarify precipitation efficiency and wind shifts that determine the precise minimum.
This market will resolve to the temperature range that contains the lowest 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 lowest 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 lowest 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, 12:31 AM ET
Volume
$0End Date
Sep 26, 2026Market Opened
Sep 24, 2026, 12:31 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=efhkResolver
0x69c47de9d...This market will resolve to the temperature range that contains the lowest 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 lowest 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.Current ensemble forecasts from regional models indicate a southerly airflow advecting mild maritime air over southern Finland ahead of an approaching low-pressure system, supporting overnight lows near 11–12 °C under persistent cloud cover and showers on September 26. These conditions suppress radiative cooling that would otherwise allow temperatures to approach single digits, while limiting daytime warming to around 14–15 °C. The near-even market split between sub-6 °C and 16 °C+ outcomes reflects lingering uncertainty in exact timing of frontal passage and boundary-layer mixing, with resolution hinging on whether any brief clearing occurs before dawn. Updated runs from the Finnish Meteorological Institute and ECMWF over the next 24–48 hours will clarify precipitation efficiency and wind shifts that determine the precise minimum.
This market will resolve to the temperature range that contains the lowest 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 lowest 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 lowest 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
$0End Date
Sep 26, 2026Market Opened
Sep 24, 2026, 12:31 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=efhkResolver
0x69c47de9d...Current ensemble forecasts from regional models indicate a southerly airflow advecting mild maritime air over southern Finland ahead of an approaching low-pressure system, supporting overnight lows near 11–12 °C under persistent cloud cover and showers on September 26. These conditions suppress radiative cooling that would otherwise allow temperatures to approach single digits, while limiting daytime warming to around 14–15 °C. The near-even market split between sub-6 °C and 16 °C+ outcomes reflects lingering uncertainty in exact timing of frontal passage and boundary-layer mixing, with resolution hinging on whether any brief clearing occurs before dawn. Updated runs from the Finnish Meteorological Institute and ECMWF over the next 24–48 hours will clarify precipitation efficiency and wind shifts that determine the precise minimum.
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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