Official observations from the Finnish Meteorological Institute (FMI) at Helsinki-Vantaa Airport station confirm the highest temperature on April 4, 2026, reached exactly 4°C, driving trader consensus to 100% on this outcome as markets near resolution. This aligns with persistent cool northerly airflow and overcast conditions suppressing daytime highs amid an unsettled early spring pattern over southern Finland, consistent with FMI's pre-event forecasts projecting 4–6°C peaks. Historical April averages around 6–7°C provide context for this below-normal reading, influenced by polar maritime air masses. Realistic challenges are minimal post-observation—only a rare data revision from instrument malfunction or quality control anomalies could alter it, though FMI protocols ensure high reliability.
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 April 4?
Highest temperature in Helsinki on April 4?
4°C 100.0%
0°C or below <1%
1°C <1%
2°C <1%
$20,595 Vol.
$20,595 Vol.
0°C or below
No
1°C
No
2°C
No
3°C
No
4°C
Yes
5°C
No
6°C
No
7°C
No
8°C
No
9°C
No
10°C or higher
No
4°C 100.0%
0°C or below <1%
1°C <1%
2°C <1%
$20,595 Vol.
$20,595 Vol.
0°C or below
No
1°C
No
2°C
No
3°C
No
4°C
Yes
5°C
No
6°C
No
7°C
No
8°C
No
9°C
No
10°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 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.
Market Opened: Apr 2, 2026, 8:55 PM 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 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.
Resolution Source
https://www.wunderground.com/history/daily/fi/vantaa/EFHKResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official observations from the Finnish Meteorological Institute (FMI) at Helsinki-Vantaa Airport station confirm the highest temperature on April 4, 2026, reached exactly 4°C, driving trader consensus to 100% on this outcome as markets near resolution. This aligns with persistent cool northerly airflow and overcast conditions suppressing daytime highs amid an unsettled early spring pattern over southern Finland, consistent with FMI's pre-event forecasts projecting 4–6°C peaks. Historical April averages around 6–7°C provide context for this below-normal reading, influenced by polar maritime air masses. Realistic challenges are minimal post-observation—only a rare data revision from instrument malfunction or quality control anomalies could alter it, though FMI protocols ensure high reliability.
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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