Recent atmospheric conditions and seasonal climatology support the market's strong consensus that Helsinki's maximum temperature on June 16 will reach or exceed 21°C. Finnish Meteorological Institute forecasts and ensemble models indicate daytime highs in the 20–22°C range, driven by southerly flow, reduced cloud cover, and above-average solar insolation typical for mid-June in southern Finland. Historical baselines show June maxima frequently approach or surpass this threshold, with current observational trends and short-range guidance reinforcing the outcome. A realistic challenge would require an unforecasted cold advection or persistent marine layer suppressing afternoon warming, though model consensus makes this 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 16?
21°C or higher 100.0%
11°C or below <1%
12°C <1%
13°C <1%
$49,967 Vol.
$49,967 Vol.
11°C or below
No
12°C
No
13°C
No
14°C
No
15°C
No
16°C
No
17°C
No
18°C
No
19°C
No
20°C
No
21°C or higher
Yes
21°C or higher 100.0%
11°C or below <1%
12°C <1%
13°C <1%
$49,967 Vol.
$49,967 Vol.
11°C or below
No
12°C
No
13°C
No
14°C
No
15°C
No
16°C
No
17°C
No
18°C
No
19°C
No
20°C
No
21°C or higher
Yes
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 14, 2026, 12:05 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 atmospheric conditions and seasonal climatology support the market's strong consensus that Helsinki's maximum temperature on June 16 will reach or exceed 21°C. Finnish Meteorological Institute forecasts and ensemble models indicate daytime highs in the 20–22°C range, driven by southerly flow, reduced cloud cover, and above-average solar insolation typical for mid-June in southern Finland. Historical baselines show June maxima frequently approach or surpass this threshold, with current observational trends and short-range guidance reinforcing the outcome. A realistic challenge would require an unforecasted cold advection or persistent marine layer suppressing afternoon warming, though model consensus makes this 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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