Latest forecast models from the Finnish Meteorological Institute and European Centre for Medium-Range Weather Forecasts indicate a maximum temperature of 18°C for Helsinki on May 21, driven by a stable high-pressure system bringing clear skies and moderate northwesterly flow. This aligns with climatological norms for late May in southern Finland, where daily highs typically range 15–20°C under similar synoptic conditions. While ensemble runs show minimal spread around this value, small deviations could occur if afternoon cloud cover develops or localized sea-breeze effects intensify, potentially shifting the peak by 1–2°C. Traders have positioned overwhelmingly on 18°C as the resolution threshold because official observations from Helsinki-Vantaa airport, the market’s reference station, are expected to confirm this exact maximum before midnight.
Experimentelle KI-generierte Zusammenfassung mit Polymarket-Daten. Dies ist keine Handelsberatung und spielt keine Rolle bei der Auflösung dieses Marktes. · AktualisiertHighest temperature in Helsinki on May 21?
Highest temperature in Helsinki on May 21?
18°C 100.0%
14°C or below <1%
15°C <1%
16°C <1%
$36,278 Vol.
$36,278 Vol.
21. Mai 2026
14°C or below
No
15°C
No
16°C
No
17°C
No
18°C
Yes
19°C
No
20°C
No
21°C
No
22°C
No
23°C
No
24°C or higher
No
18°C 100.0%
14°C or below <1%
15°C <1%
16°C <1%
$36,278 Vol.
$36,278 Vol.
21. Mai 2026
14°C or below
$2,338 Vol.
No
15°C
$1,346 Vol.
No
16°C
$2,882 Vol.
No
17°C
$3,183 Vol.
No
18°C
$7,027 Vol.
Yes
19°C
$6,624 Vol.
No
20°C
$3,942 Vol.
No
21°C
$2,019 Vol.
No
22°C
$4,422 Vol.
No
23°C
$1,171 Vol.
No
24°C or higher
$1,324 Vol.
No
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 21 May '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Helsinki Vantaa Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.Latest forecast models from the Finnish Meteorological Institute and European Centre for Medium-Range Weather Forecasts indicate a maximum temperature of 18°C for Helsinki on May 21, driven by a stable high-pressure system bringing clear skies and moderate northwesterly flow. This aligns with climatological norms for late May in southern Finland, where daily highs typically range 15–20°C under similar synoptic conditions. While ensemble runs show minimal spread around this value, small deviations could occur if afternoon cloud cover develops or localized sea-breeze effects intensify, potentially shifting the peak by 1–2°C. Traders have positioned overwhelmingly on 18°C as the resolution threshold because official observations from Helsinki-Vantaa airport, the market’s reference station, are expected to confirm this exact maximum before midnight.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 21 May '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Helsinki Vantaa Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Helsinki Vantaa Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Markt eröffnet: May 19, 2026, 12:26 AM ET
Volumen
$36,278Enddatum
21. Mai 2026Markt eröffnet
May 19, 2026, 12:26 AM ETAbwicklungsquelle
https://www.wunderground.com/history/daily/fi/vantaa/EFHKResolver
0x69c47De9D...Vorgeschlagenes Ergebnis: No
Kein Einspruch
Endgültiges Ergebnis: No
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 21 May '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Helsinki Vantaa Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.Latest forecast models from the Finnish Meteorological Institute and European Centre for Medium-Range Weather Forecasts indicate a maximum temperature of 18°C for Helsinki on May 21, driven by a stable high-pressure system bringing clear skies and moderate northwesterly flow. This aligns with climatological norms for late May in southern Finland, where daily highs typically range 15–20°C under similar synoptic conditions. While ensemble runs show minimal spread around this value, small deviations could occur if afternoon cloud cover develops or localized sea-breeze effects intensify, potentially shifting the peak by 1–2°C. Traders have positioned overwhelmingly on 18°C as the resolution threshold because official observations from Helsinki-Vantaa airport, the market’s reference station, are expected to confirm this exact maximum before midnight.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 21 May '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Helsinki Vantaa Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Helsinki Vantaa Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Volumen
$36,278Enddatum
21. Mai 2026Markt eröffnet
May 19, 2026, 12:26 AM ETAbwicklungsquelle
https://www.wunderground.com/history/daily/fi/vantaa/EFHKResolver
0x69c47De9D...Vorgeschlagenes Ergebnis: No
Kein Einspruch
Endgültiges Ergebnis: No
Latest forecast models from the Finnish Meteorological Institute and European Centre for Medium-Range Weather Forecasts indicate a maximum temperature of 18°C for Helsinki on May 21, driven by a stable high-pressure system bringing clear skies and moderate northwesterly flow. This aligns with climatological norms for late May in southern Finland, where daily highs typically range 15–20°C under similar synoptic conditions. While ensemble runs show minimal spread around this value, small deviations could occur if afternoon cloud cover develops or localized sea-breeze effects intensify, potentially shifting the peak by 1–2°C. Traders have positioned overwhelmingly on 18°C as the resolution threshold because official observations from Helsinki-Vantaa airport, the market’s reference station, are expected to confirm this exact maximum before midnight.
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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Vorsicht bei externen Links.
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