Recent short-range ensemble forecasts from ECMWF and GFS highlight variable cloud cover and light southwesterly winds over Helsinki as the main drivers of uncertainty in the September 1 overnight minimum. Clearing skies could enhance radiational cooling and push readings toward 10–11 °C, while increased moisture or stronger flow would limit the drop to 12–13 °C. Historical climatology shows early-September lows averaging near 11–12 °C, yet current model spreads of several degrees reflect typical 48-hour forecast noise around frontal timing and boundary-layer mixing. Traders therefore assign nearly equal implied probabilities across the central outcomes, with resolution hinging on the official FMI observation for the calendar-day minimum.
Experimentelle KI-generierte Zusammenfassung mit Polymarket-Daten. Dies ist keine Handelsberatung und spielt keine Rolle bei der Auflösung dieses Marktes. · AktualisiertNiedrigste Temperatur in Helsinki am 1. September?
18°C or higher 43%
12°C 27%
13°C 27%
10°C 26%
8°C or below
1%
9°C
24%
10°C
26%
11°C
26%
12°C
27%
13°C
27%
14°C
26%
15°C
22%
16°C
2%
17°C
8%
18°C or higher
43%
18°C or higher 43%
12°C 27%
13°C 27%
10°C 26%
8°C or below
1%
9°C
24%
10°C
26%
11°C
26%
12°C
27%
13°C
27%
14°C
26%
15°C
22%
16°C
2%
17°C
8%
18°C or higher
43%
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.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.
Markt eröffnet: Aug 30, 2026, 12:31 AM ET
Abwicklungsquelle
https://www.weather.gov/wrh/timeseries?site=efhkAbwickler
0x69c47De9D...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.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.
Abwicklungsquelle
https://www.weather.gov/wrh/timeseries?site=efhkAbwickler
0x69c47De9D...Recent short-range ensemble forecasts from ECMWF and GFS highlight variable cloud cover and light southwesterly winds over Helsinki as the main drivers of uncertainty in the September 1 overnight minimum. Clearing skies could enhance radiational cooling and push readings toward 10–11 °C, while increased moisture or stronger flow would limit the drop to 12–13 °C. Historical climatology shows early-September lows averaging near 11–12 °C, yet current model spreads of several degrees reflect typical 48-hour forecast noise around frontal timing and boundary-layer mixing. Traders therefore assign nearly equal implied probabilities across the central outcomes, with resolution hinging on the official FMI observation for the calendar-day minimum.
Experimentelle KI-generierte Zusammenfassung mit Polymarket-Daten. Dies ist keine Handelsberatung und spielt keine Rolle bei der Auflösung dieses Marktes. · Aktualisiert
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