**Clear skies and northwest winds are enabling strong radiative cooling overnight, positioning Helsinki's minimum temperature for September 6 near 5–7°C and producing the near-even market split (7°C at 50.4%, 5°C and 6°C at 49.5%).** Official forecasts from sources including Yr.no and WeatherBug show temperatures falling from evening readings around 10–11°C (roughly 50–52°F) under mostly clear conditions to a low of approximately 5–7°C (41–45°F) in the early morning hours, consistent with northwest flow advecting cooler air. Historical averages place the September 6 low near 10.8°C, but current high-pressure dominance and lower dew points support greater overnight cooling than typical. Model consensus clusters tightly in this narrow band, with minor differences in exact timing, boundary-layer mixing, or station-specific readings (e.g., Helsinki-Vantaa) creating the tight probability distribution. Odds for 4°C or below remain low at 3%, reflecting limited downside risk absent unexpected model shifts, while higher outcomes above 8°C carry negligible implied probability. Traders are effectively pricing the final observed minimum against these converging forecasts.
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 6?
Lowest temperature in Helsinki on September 6?
5°C 44%
4°C or below 4%
6°C <1%
8°C <1%
$1,014 Vol.
$1,014 Vol.
Sep 6, 2026
4°C or below
No
5°C
No
6°C
No
7°C
Yes
8°C
No
9°C
No
10°C
No
11°C
No
12°C
No
13°C
No
14°C or higher
No
5°C 44%
4°C or below 4%
6°C <1%
8°C <1%
$1,014 Vol.
$1,014 Vol.
Sep 6, 2026
4°C or below
$5 Vol.
No
5°C
$25 Vol.
No
6°C
$65 Vol.
No
7°C
$362 Vol.
Yes
8°C
$134 Vol.
No
9°C
$105 Vol.
No
10°C
$94 Vol.
No
11°C
$114 Vol.
No
12°C
$35 Vol.
No
13°C
$35 Vol.
No
14°C or higher
$40 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 6 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.**Clear skies and northwest winds are enabling strong radiative cooling overnight, positioning Helsinki's minimum temperature for September 6 near 5–7°C and producing the near-even market split (7°C at 50.4%, 5°C and 6°C at 49.5%).**
Official forecasts from sources including Yr.no and WeatherBug show temperatures falling from evening readings around 10–11°C (roughly 50–52°F) under mostly clear conditions to a low of approximately 5–7°C (41–45°F) in the early morning hours, consistent with northwest flow advecting cooler air. Historical averages place the September 6 low near 10.8°C, but current high-pressure dominance and lower dew points support greater overnight cooling than typical. Model consensus clusters tightly in this narrow band, with minor differences in exact timing, boundary-layer mixing, or station-specific readings (e.g., Helsinki-Vantaa) creating the tight probability distribution. Odds for 4°C or below remain low at 3%, reflecting limited downside risk absent unexpected model shifts, while higher outcomes above 8°C carry negligible implied probability. Traders are effectively pricing the final observed minimum against these converging forecasts.
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 6 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 4, 2026, 12:31 AM ET
Volume
$1,014End Date
Sep 6, 2026Market Opened
Sep 4, 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 6 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.**Clear skies and northwest winds are enabling strong radiative cooling overnight, positioning Helsinki's minimum temperature for September 6 near 5–7°C and producing the near-even market split (7°C at 50.4%, 5°C and 6°C at 49.5%).**
Official forecasts from sources including Yr.no and WeatherBug show temperatures falling from evening readings around 10–11°C (roughly 50–52°F) under mostly clear conditions to a low of approximately 5–7°C (41–45°F) in the early morning hours, consistent with northwest flow advecting cooler air. Historical averages place the September 6 low near 10.8°C, but current high-pressure dominance and lower dew points support greater overnight cooling than typical. Model consensus clusters tightly in this narrow band, with minor differences in exact timing, boundary-layer mixing, or station-specific readings (e.g., Helsinki-Vantaa) creating the tight probability distribution. Odds for 4°C or below remain low at 3%, reflecting limited downside risk absent unexpected model shifts, while higher outcomes above 8°C carry negligible implied probability. Traders are effectively pricing the final observed minimum against these converging forecasts.
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 6 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
$1,014End Date
Sep 6, 2026Market Opened
Sep 4, 2026, 12:31 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=efhkResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
**Clear skies and northwest winds are enabling strong radiative cooling overnight, positioning Helsinki's minimum temperature for September 6 near 5–7°C and producing the near-even market split (7°C at 50.4%, 5°C and 6°C at 49.5%).** Official forecasts from sources including Yr.no and WeatherBug show temperatures falling from evening readings around 10–11°C (roughly 50–52°F) under mostly clear conditions to a low of approximately 5–7°C (41–45°F) in the early morning hours, consistent with northwest flow advecting cooler air. Historical averages place the September 6 low near 10.8°C, but current high-pressure dominance and lower dew points support greater overnight cooling than typical. Model consensus clusters tightly in this narrow band, with minor differences in exact timing, boundary-layer mixing, or station-specific readings (e.g., Helsinki-Vantaa) creating the tight probability distribution. Odds for 4°C or below remain low at 3%, reflecting limited downside risk absent unexpected model shifts, while higher outcomes above 8°C carry negligible implied probability. Traders are effectively pricing the final observed minimum against these converging forecasts.
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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Frequently Asked Questions