**Current atmospheric conditions and short-range forecast models from sources such as the Finnish Meteorological Institute support a daily minimum of 3°C in Helsinki on September 12, 2026, driving the market-implied odds to 99.9% for that outcome.** Recent observations show overnight cooling under mostly clear to partly cloudy skies with light southwesterly winds, consistent with climatological expectations for early September but on the cooler side of the 1991–2020 average low near 9.8°C. Historical analogs, including occasional dips to 1.6–3.0°C in past decades, provide context for the positioning. Trader consensus reflects real-time data aggregation, with high confidence stemming from model agreement on the overnight low. Scenarios that could realistically alter resolution include unforecasted radiative cooling under clearer skies, shifts in wind direction increasing mixing, or official station measurement revisions before the meteorological day closes.
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 12?
Lowest temperature in Helsinki on September 12?
3°C 100.0%
2°C or below <1%
4°C <1%
5°C <1%
$1,283 Vol.
$1,283 Vol.
Sep 12, 2026
2°C or below
No
3°C
Yes
4°C
No
5°C
No
6°C
No
7°C
No
8°C
No
9°C
No
10°C
No
11°C
No
12°C or higher
No
3°C 100.0%
2°C or below <1%
4°C <1%
5°C <1%
$1,283 Vol.
$1,283 Vol.
Sep 12, 2026
2°C or below
$68 Vol.
No
3°C
$188 Vol.
Yes
4°C
$37 Vol.
No
5°C
$13 Vol.
No
6°C
$102 Vol.
No
7°C
$285 Vol.
No
8°C
$196 Vol.
No
9°C
$259 Vol.
No
10°C
$58 Vol.
No
11°C
$38 Vol.
No
12°C or higher
$38 Vol.
No
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 12 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 atmospheric conditions and short-range forecast models from sources such as the Finnish Meteorological Institute support a daily minimum of 3°C in Helsinki on September 12, 2026, driving the market-implied odds to 99.9% for that outcome.**
Recent observations show overnight cooling under mostly clear to partly cloudy skies with light southwesterly winds, consistent with climatological expectations for early September but on the cooler side of the 1991–2020 average low near 9.8°C. Historical analogs, including occasional dips to 1.6–3.0°C in past decades, provide context for the positioning.
Trader consensus reflects real-time data aggregation, with high confidence stemming from model agreement on the overnight low. Scenarios that could realistically alter resolution include unforecasted radiative cooling under clearer skies, shifts in wind direction increasing mixing, or official station measurement revisions before the meteorological day closes.
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 12 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 10, 2026, 12:31 AM ET
Volume
$1,283End Date
Sep 12, 2026Market Opened
Sep 10, 2026, 12:31 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=efhkResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
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 12 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 atmospheric conditions and short-range forecast models from sources such as the Finnish Meteorological Institute support a daily minimum of 3°C in Helsinki on September 12, 2026, driving the market-implied odds to 99.9% for that outcome.**
Recent observations show overnight cooling under mostly clear to partly cloudy skies with light southwesterly winds, consistent with climatological expectations for early September but on the cooler side of the 1991–2020 average low near 9.8°C. Historical analogs, including occasional dips to 1.6–3.0°C in past decades, provide context for the positioning.
Trader consensus reflects real-time data aggregation, with high confidence stemming from model agreement on the overnight low. Scenarios that could realistically alter resolution include unforecasted radiative cooling under clearer skies, shifts in wind direction increasing mixing, or official station measurement revisions before the meteorological day closes.
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 12 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
$1,283End Date
Sep 12, 2026Market Opened
Sep 10, 2026, 12:31 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=efhkResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
**Current atmospheric conditions and short-range forecast models from sources such as the Finnish Meteorological Institute support a daily minimum of 3°C in Helsinki on September 12, 2026, driving the market-implied odds to 99.9% for that outcome.** Recent observations show overnight cooling under mostly clear to partly cloudy skies with light southwesterly winds, consistent with climatological expectations for early September but on the cooler side of the 1991–2020 average low near 9.8°C. Historical analogs, including occasional dips to 1.6–3.0°C in past decades, provide context for the positioning. Trader consensus reflects real-time data aggregation, with high confidence stemming from model agreement on the overnight low. Scenarios that could realistically alter resolution include unforecasted radiative cooling under clearer skies, shifts in wind direction increasing mixing, or official station measurement revisions before the meteorological day closes.
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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