Current observations from the Finnish Meteorological Institute confirm a daily maximum of 15°C in Helsinki on June 13, 2026, under persistent overcast skies, light winds, and periods of drizzle that suppressed radiative heating. This aligns with Baltic Sea maritime moderation, which typically caps early-June maxima near the 16–17°C climatological average, and recent model consensus showing limited afternoon warming potential. Trader consensus at 100% implied probability on 15°C reflects these verified conditions and the proximity to day’s end, leaving minimal room for upward revision. Only unexpected late-day clearing or measurement discrepancies at official stations could realistically shift the outcome, though both appear improbable given stable synoptic patterns.
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 13?
15°C 100.0%
12°C or below <1%
13°C <1%
14°C <1%
$49,554 Vol.
$49,554 Vol.
12°C or below
No
13°C
No
14°C
No
15°C
Yes
16°C
No
17°C
No
18°C
No
19°C
No
20°C
No
21°C
No
22°C or higher
No
15°C 100.0%
12°C or below <1%
13°C <1%
14°C <1%
$49,554 Vol.
$49,554 Vol.
12°C or below
No
13°C
No
14°C
No
15°C
Yes
16°C
No
17°C
No
18°C
No
19°C
No
20°C
No
21°C
No
22°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 11, 2026, 12:17 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
Current observations from the Finnish Meteorological Institute confirm a daily maximum of 15°C in Helsinki on June 13, 2026, under persistent overcast skies, light winds, and periods of drizzle that suppressed radiative heating. This aligns with Baltic Sea maritime moderation, which typically caps early-June maxima near the 16–17°C climatological average, and recent model consensus showing limited afternoon warming potential. Trader consensus at 100% implied probability on 15°C reflects these verified conditions and the proximity to day’s end, leaving minimal room for upward revision. Only unexpected late-day clearing or measurement discrepancies at official stations could realistically shift the outcome, though both appear improbable given stable synoptic patterns.
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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