Finnish Meteorological Institute observations at the Helsinki-Kaisaniemi station, the official urban reference site, confirm the highest temperature on April 16 reached exactly 12°C around mid-morning, before dropping amid persistent north-northeasterly winds of 4-5 m/s and extensive cloud cover limiting solar insolation. This aligns with pre-event consensus from ECMWF and GFS models forecasting subdued maxima under a cool air mass over the Baltic Sea region, consistent with early spring climatology where April highs average 7-10°C. Trader consensus at 100% reflects this verified data, with negligible 0.1% on 13°C or higher. Realistic challenges would require rare post hoc data revisions from sensor validation, though FMI's quality controls render this highly improbable.
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 16?
Highest temperature in Helsinki on April 16?
12°C 100.0%
3°C or below <1%
4°C <1%
5°C <1%
$154,655 Vol.
$154,655 Vol.
3°C or below
No
4°C
No
5°C
No
6°C
No
7°C
No
8°C
No
9°C
No
10°C
No
11°C
No
12°C
Yes
13°C or higher
No
12°C 100.0%
3°C or below <1%
4°C <1%
5°C <1%
$154,655 Vol.
$154,655 Vol.
3°C or below
No
4°C
No
5°C
No
6°C
No
7°C
No
8°C
No
9°C
No
10°C
No
11°C
No
12°C
Yes
13°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 14, 2026, 6:20 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
Finnish Meteorological Institute observations at the Helsinki-Kaisaniemi station, the official urban reference site, confirm the highest temperature on April 16 reached exactly 12°C around mid-morning, before dropping amid persistent north-northeasterly winds of 4-5 m/s and extensive cloud cover limiting solar insolation. This aligns with pre-event consensus from ECMWF and GFS models forecasting subdued maxima under a cool air mass over the Baltic Sea region, consistent with early spring climatology where April highs average 7-10°C. Trader consensus at 100% reflects this verified data, with negligible 0.1% on 13°C or higher. Realistic challenges would require rare post hoc data revisions from sensor validation, though FMI's quality controls render this highly improbable.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions