Recent official forecasts from the Finnish Meteorological Institute and ensemble models indicate daytime highs in Helsinki of 15–18°C on June 12, with the highest probability centered near 17°C amid variable cloud cover and moderate southwesterly winds. This aligns with early-June climatology, where average maximum temperatures reach 16–19°C but fluctuate with Atlantic low-pressure systems that can suppress or enhance daytime warming by 2–4°C. Trader consensus reflects model agreement on limited solar heating and possible showers, while the narrow spread between 16°C and 19°C outcomes highlights remaining uncertainty in boundary-layer moisture and timing of any frontal passage before resolution. Updated model runs and 48-hour guidance will likely refine these probabilities.
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 12?
17°C 34%
18°C 29%
19°C 17%
16°C 16%
13°C or below
<1%
14°C
2%
15°C
4%
16°C
16%
17°C
34%
18°C
29%
19°C
17%
20°C
4%
21°C
1%
22°C
<1%
23°C or higher
<1%
17°C 34%
18°C 29%
19°C 17%
16°C 16%
13°C or below
<1%
14°C
2%
15°C
4%
16°C
16%
17°C
34%
18°C
29%
19°C
17%
20°C
4%
21°C
1%
22°C
<1%
23°C or higher
<1%
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 10, 2026, 1:05 AM ET
Resolution Source
https://www.wunderground.com/history/daily/fi/vantaa/EFHKResolver
0x69c47De9D...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...Recent official forecasts from the Finnish Meteorological Institute and ensemble models indicate daytime highs in Helsinki of 15–18°C on June 12, with the highest probability centered near 17°C amid variable cloud cover and moderate southwesterly winds. This aligns with early-June climatology, where average maximum temperatures reach 16–19°C but fluctuate with Atlantic low-pressure systems that can suppress or enhance daytime warming by 2–4°C. Trader consensus reflects model agreement on limited solar heating and possible showers, while the narrow spread between 16°C and 19°C outcomes highlights remaining uncertainty in boundary-layer moisture and timing of any frontal passage before resolution. Updated model runs and 48-hour guidance will likely refine these probabilities.
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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