Recent numerical weather model consensus from the Finnish Meteorological Institute and ECMWF places the maximum temperature in Helsinki near 19°C on June 5 under light southerly flow, scattered showers, and limited solar insolation, aligning closely with the long-term June climatological average high. This atmospheric setup limits diurnal warming and supports the market’s near-certain outcome at that level. Minor deviations remain possible if skies clear earlier than anticipated or if warm advection strengthens slightly, though current forecast stability and observational trends make such shifts unlikely before resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Helsinki on June 5?
19°C 100.0%
17°C or below <1%
18°C <1%
20°C <1%
$85,722 Vol.
$85,722 Vol.
17°C or below
No
18°C
No
19°C
Yes
20°C
No
21°C
No
22°C
No
23°C
No
24°C
No
25°C
No
26°C
No
27°C or higher
No
19°C 100.0%
17°C or below <1%
18°C <1%
20°C <1%
$85,722 Vol.
$85,722 Vol.
17°C or below
No
18°C
No
19°C
Yes
20°C
No
21°C
No
22°C
No
23°C
No
24°C
No
25°C
No
26°C
No
27°C or higher
No
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, 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 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.
Market Opened: Jun 3, 2026, 12:13 AM ET
Resolution Source
https://www.wunderground.com/history/daily/fi/vantaa/EFHKResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, 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 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.
Resolution Source
https://www.wunderground.com/history/daily/fi/vantaa/EFHKResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Recent numerical weather model consensus from the Finnish Meteorological Institute and ECMWF places the maximum temperature in Helsinki near 19°C on June 5 under light southerly flow, scattered showers, and limited solar insolation, aligning closely with the long-term June climatological average high. This atmospheric setup limits diurnal warming and supports the market’s near-certain outcome at that level. Minor deviations remain possible if skies clear earlier than anticipated or if warm advection strengthens slightly, though current forecast stability and observational trends make such shifts unlikely before resolution.
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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